diff --git a/install/sql/incremental/upd_0063.sql b/install/sql/incremental/upd_0063.sql
new file mode 100644
index 0000000000000000000000000000000000000000..827fdee11a9d20a19d2695e67a14aa5b4604ba10
--- /dev/null
+++ b/install/sql/incremental/upd_0063.sql
@@ -0,0 +1 @@
+ALTER TABLE `mail_user` ADD `disablelmtp` ENUM( 'n', 'y' ) NOT NULL DEFAULT 'n' AFTER `disablelda` ;
\ No newline at end of file
diff --git a/install/sql/ispconfig3.sql b/install/sql/ispconfig3.sql
index 533151bbbf4974279c884d7594a096f48d9bb875..4841b1a726386295a58f090b4521195182b8ad73 100644
--- a/install/sql/ispconfig3.sql
+++ b/install/sql/ispconfig3.sql
@@ -884,6 +884,7 @@ CREATE TABLE `mail_user` (
   `disablesmtp` enum('n','y') NOT NULL default 'n',
   `disablesieve` enum('n','y') NOT NULL default 'n',
   `disablelda` enum('n','y') NOT NULL default 'n',
+  `disablelmtp` enum('n','y') NOT NULL default 'n',
   `disabledoveadm` enum('n','y') NOT NULL default 'n',
   `last_quota_notification` date NULL default NULL,
   `backup_interval` VARCHAR( 255 ) NOT NULL,
diff --git a/install/tpl/debian6_dovecot2.conf.master b/install/tpl/debian6_dovecot2.conf.master
index f359260dabc47496f301110c4e20022db46c9a96..5b04c61a45163c443df75b7fcadd09396cb7b79e 100644
--- a/install/tpl/debian6_dovecot2.conf.master
+++ b/install/tpl/debian6_dovecot2.conf.master
@@ -1,5 +1,5 @@
 listen = *,[::]
-protocols = imap pop3
+protocols = imap pop3 lmtp
 auth_mechanisms = plain login
 disable_plaintext_auth = no
 log_timestamp = "%Y-%m-%d %H:%M:%S "
@@ -31,6 +31,13 @@ service auth {
   }
   user = root
 }
+service lmtp {
+  unix_listener /var/spool/postfix/private/dovecot-lmtp {
+   group = postfix
+   mode = 0600
+   user = postfix
+  }
+}
 service imap-login {
   client_limit = 1000
   process_limit = 500
@@ -44,4 +51,8 @@ protocol pop3 {
 }
 protocol lda {
   mail_plugins = sieve quota
+}
+protocol lmtp {
+  postmaster_address = webmaster@localhost
+  mail_plugins = quota sieve
 }
\ No newline at end of file
diff --git a/install/tpl/debian_dovecot2.conf.master b/install/tpl/debian_dovecot2.conf.master
index f359260dabc47496f301110c4e20022db46c9a96..5b04c61a45163c443df75b7fcadd09396cb7b79e 100644
--- a/install/tpl/debian_dovecot2.conf.master
+++ b/install/tpl/debian_dovecot2.conf.master
@@ -1,5 +1,5 @@
 listen = *,[::]
-protocols = imap pop3
+protocols = imap pop3 lmtp
 auth_mechanisms = plain login
 disable_plaintext_auth = no
 log_timestamp = "%Y-%m-%d %H:%M:%S "
@@ -31,6 +31,13 @@ service auth {
   }
   user = root
 }
+service lmtp {
+  unix_listener /var/spool/postfix/private/dovecot-lmtp {
+   group = postfix
+   mode = 0600
+   user = postfix
+  }
+}
 service imap-login {
   client_limit = 1000
   process_limit = 500
@@ -44,4 +51,8 @@ protocol pop3 {
 }
 protocol lda {
   mail_plugins = sieve quota
+}
+protocol lmtp {
+  postmaster_address = webmaster@localhost
+  mail_plugins = quota sieve
 }
\ No newline at end of file
diff --git a/install/tpl/debian_postfix.conf.master b/install/tpl/debian_postfix.conf.master
index e5564c84ee6983cc4a8ba5bb2aee3300b81b4614..e8f3d82549f13027b627f3aea8332f4801be9e73 100644
--- a/install/tpl/debian_postfix.conf.master
+++ b/install/tpl/debian_postfix.conf.master
@@ -5,8 +5,8 @@ virtual_alias_maps = proxy:mysql:{config_dir}/mysql-virtual_forwardings.cf, prox
 virtual_mailbox_domains = proxy:mysql:{config_dir}/mysql-virtual_domains.cf
 virtual_mailbox_maps = proxy:mysql:{config_dir}/mysql-virtual_mailboxes.cf
 virtual_mailbox_base = {vmail_mailbox_base}
-virtual_uid_maps = static:{vmail_userid}
-virtual_gid_maps = static:{vmail_groupid}
+virtual_uid_maps = mysql:/etc/postfix/mysql-virtual_uids.cf
+virtual_gid_maps = mysql:/etc/postfix/mysql-virtual_gids.cf
 inet_protocols=all
 smtpd_sasl_auth_enable = yes
 broken_sasl_auth_clients = yes
@@ -25,7 +25,7 @@ smtpd_client_restrictions = check_client_access mysql:{config_dir}/mysql-virtual
 smtpd_client_message_rate_limit = 100
 maildrop_destination_concurrency_limit = 1
 maildrop_destination_recipient_limit   = 1
-virtual_transport = maildrop
+virtual_transport = lmtp:unix:private/dovecot-lmtp
 header_checks = regexp:{config_dir}/header_checks
 mime_header_checks = regexp:{config_dir}/mime_header_checks
 nested_header_checks = regexp:{config_dir}/nested_header_checks
diff --git a/install/tpl/fedora_dovecot2.conf.master b/install/tpl/fedora_dovecot2.conf.master
index 75fad4fc76070aadf82b50dbd060e9e4a3d6f5b2..0d91006dda7fcc79e1c23beeb0e77b14581a5b6a 100644
--- a/install/tpl/fedora_dovecot2.conf.master
+++ b/install/tpl/fedora_dovecot2.conf.master
@@ -1,5 +1,5 @@
 listen = *,[::]
-protocols = imap pop3
+protocols = imap pop3 lmtp
 auth_mechanisms = plain login
 disable_plaintext_auth = no
 log_timestamp = "%Y-%m-%d %H:%M:%S "
@@ -31,6 +31,13 @@ service auth {
   }
   user = root
 }
+service lmtp {
+  unix_listener /var/spool/postfix/private/dovecot-lmtp {
+   group = postfix
+   mode = 0600
+   user = postfix
+  }
+}
 service imap-login {
   client_limit = 1000
   process_limit = 500
@@ -44,4 +51,8 @@ protocol pop3 {
 }
 protocol lda {
   mail_plugins = sieve quota
+}
+protocol lmtp {
+  postmaster_address = webmaster@localhost
+  mail_plugins = quota sieve
 }
\ No newline at end of file
diff --git a/install/tpl/fedora_postfix.conf.master b/install/tpl/fedora_postfix.conf.master
index 35c3cac13c7ecbf0fe8a9681cf01afc95ad4d826..4401f706e0d43c6e3a3460be1a4b5b034eeb93df 100644
--- a/install/tpl/fedora_postfix.conf.master
+++ b/install/tpl/fedora_postfix.conf.master
@@ -3,8 +3,8 @@ virtual_alias_maps = proxy:mysql:{config_dir}/mysql-virtual_forwardings.cf, prox
 virtual_mailbox_domains = proxy:mysql:{config_dir}/mysql-virtual_domains.cf
 virtual_mailbox_maps = proxy:mysql:{config_dir}/mysql-virtual_mailboxes.cf
 virtual_mailbox_base = {vmail_mailbox_base}
-virtual_uid_maps = static:{vmail_userid}
-virtual_gid_maps = static:{vmail_groupid}
+virtual_uid_maps = mysql:/etc/postfix/mysql-virtual_uids.cf
+virtual_gid_maps = mysql:/etc/postfix/mysql-virtual_gids.cf
 smtpd_sasl_auth_enable = yes
 broken_sasl_auth_clients = yes
 smtpd_sasl_authenticated_header = yes
@@ -22,7 +22,7 @@ smtpd_client_restrictions = check_client_access mysql:{config_dir}/mysql-virtual
 smtpd_client_message_rate_limit = 100
 maildrop_destination_concurrency_limit = 1
 maildrop_destination_recipient_limit   = 1
-virtual_transport = maildrop
+virtual_transport = lmtp:unix:private/dovecot-lmtp
 header_checks = regexp:{config_dir}/header_checks
 mime_header_checks = regexp:{config_dir}/mime_header_checks
 nested_header_checks = regexp:{config_dir}/nested_header_checks
diff --git a/install/tpl/gentoo_postfix.conf.master b/install/tpl/gentoo_postfix.conf.master
index 35c3cac13c7ecbf0fe8a9681cf01afc95ad4d826..4401f706e0d43c6e3a3460be1a4b5b034eeb93df 100644
--- a/install/tpl/gentoo_postfix.conf.master
+++ b/install/tpl/gentoo_postfix.conf.master
@@ -3,8 +3,8 @@ virtual_alias_maps = proxy:mysql:{config_dir}/mysql-virtual_forwardings.cf, prox
 virtual_mailbox_domains = proxy:mysql:{config_dir}/mysql-virtual_domains.cf
 virtual_mailbox_maps = proxy:mysql:{config_dir}/mysql-virtual_mailboxes.cf
 virtual_mailbox_base = {vmail_mailbox_base}
-virtual_uid_maps = static:{vmail_userid}
-virtual_gid_maps = static:{vmail_groupid}
+virtual_uid_maps = mysql:/etc/postfix/mysql-virtual_uids.cf
+virtual_gid_maps = mysql:/etc/postfix/mysql-virtual_gids.cf
 smtpd_sasl_auth_enable = yes
 broken_sasl_auth_clients = yes
 smtpd_sasl_authenticated_header = yes
@@ -22,7 +22,7 @@ smtpd_client_restrictions = check_client_access mysql:{config_dir}/mysql-virtual
 smtpd_client_message_rate_limit = 100
 maildrop_destination_concurrency_limit = 1
 maildrop_destination_recipient_limit   = 1
-virtual_transport = maildrop
+virtual_transport = lmtp:unix:private/dovecot-lmtp
 header_checks = regexp:{config_dir}/header_checks
 mime_header_checks = regexp:{config_dir}/mime_header_checks
 nested_header_checks = regexp:{config_dir}/nested_header_checks
diff --git a/install/tpl/mysql-virtual_gids.cf.master b/install/tpl/mysql-virtual_gids.cf.master
new file mode 100644
index 0000000000000000000000000000000000000000..7c7d995fc98bb334e087f3a0e307a793f8cc1b9b
--- /dev/null
+++ b/install/tpl/mysql-virtual_gids.cf.master
@@ -0,0 +1,8 @@
+user = {mysql_server_ispconfig_user}
+password = {mysql_server_ispconfig_password}
+dbname = {mysql_server_database}
+table = mail_user
+select_field = gid
+where_field = email
+additional_conditions = and postfix = 'y' and server_id = {server_id}
+hosts = {mysql_server_ip}
\ No newline at end of file
diff --git a/install/tpl/mysql-virtual_uids.cf.master b/install/tpl/mysql-virtual_uids.cf.master
new file mode 100644
index 0000000000000000000000000000000000000000..da3cd7c2a0936dc181a478d568a12a3a7aed7347
--- /dev/null
+++ b/install/tpl/mysql-virtual_uids.cf.master
@@ -0,0 +1,8 @@
+user = {mysql_server_ispconfig_user}
+password = {mysql_server_ispconfig_password}
+dbname = {mysql_server_database}
+table = mail_user
+select_field = uid
+where_field = email
+additional_conditions = and postfix = 'y' and server_id = {server_id}
+hosts = {mysql_server_ip}
diff --git a/install/tpl/opensuse_dovecot2.conf.master b/install/tpl/opensuse_dovecot2.conf.master
index f359260dabc47496f301110c4e20022db46c9a96..5b04c61a45163c443df75b7fcadd09396cb7b79e 100644
--- a/install/tpl/opensuse_dovecot2.conf.master
+++ b/install/tpl/opensuse_dovecot2.conf.master
@@ -1,5 +1,5 @@
 listen = *,[::]
-protocols = imap pop3
+protocols = imap pop3 lmtp
 auth_mechanisms = plain login
 disable_plaintext_auth = no
 log_timestamp = "%Y-%m-%d %H:%M:%S "
@@ -31,6 +31,13 @@ service auth {
   }
   user = root
 }
+service lmtp {
+  unix_listener /var/spool/postfix/private/dovecot-lmtp {
+   group = postfix
+   mode = 0600
+   user = postfix
+  }
+}
 service imap-login {
   client_limit = 1000
   process_limit = 500
@@ -44,4 +51,8 @@ protocol pop3 {
 }
 protocol lda {
   mail_plugins = sieve quota
+}
+protocol lmtp {
+  postmaster_address = webmaster@localhost
+  mail_plugins = quota sieve
 }
\ No newline at end of file
diff --git a/install/tpl/opensuse_postfix.conf.master b/install/tpl/opensuse_postfix.conf.master
index 35c3cac13c7ecbf0fe8a9681cf01afc95ad4d826..4401f706e0d43c6e3a3460be1a4b5b034eeb93df 100644
--- a/install/tpl/opensuse_postfix.conf.master
+++ b/install/tpl/opensuse_postfix.conf.master
@@ -3,8 +3,8 @@ virtual_alias_maps = proxy:mysql:{config_dir}/mysql-virtual_forwardings.cf, prox
 virtual_mailbox_domains = proxy:mysql:{config_dir}/mysql-virtual_domains.cf
 virtual_mailbox_maps = proxy:mysql:{config_dir}/mysql-virtual_mailboxes.cf
 virtual_mailbox_base = {vmail_mailbox_base}
-virtual_uid_maps = static:{vmail_userid}
-virtual_gid_maps = static:{vmail_groupid}
+virtual_uid_maps = mysql:/etc/postfix/mysql-virtual_uids.cf
+virtual_gid_maps = mysql:/etc/postfix/mysql-virtual_gids.cf
 smtpd_sasl_auth_enable = yes
 broken_sasl_auth_clients = yes
 smtpd_sasl_authenticated_header = yes
@@ -22,7 +22,7 @@ smtpd_client_restrictions = check_client_access mysql:{config_dir}/mysql-virtual
 smtpd_client_message_rate_limit = 100
 maildrop_destination_concurrency_limit = 1
 maildrop_destination_recipient_limit   = 1
-virtual_transport = maildrop
+virtual_transport = lmtp:unix:private/dovecot-lmtp
 header_checks = regexp:{config_dir}/header_checks
 mime_header_checks = regexp:{config_dir}/mime_header_checks
 nested_header_checks = regexp:{config_dir}/nested_header_checks
diff --git a/install/tpl/server.ini.master b/install/tpl/server.ini.master
index 9186cc18af857829afc26287e185ef9459e0b599..0d578e1582803cc2f9fe4c6f00b5ddeef3d11a4b 100644
--- a/install/tpl/server.ini.master
+++ b/install/tpl/server.ini.master
@@ -38,6 +38,7 @@ mailuser_uid=5000
 mailuser_gid=5000
 mailuser_name=vmail
 mailuser_group=vmail
+mailbox_virtual_uidgid_maps=n
 relayhost=
 relayhost_user=
 relayhost_password=
diff --git a/interface/lib/classes/remoting.inc.php b/interface/lib/classes/remoting.inc.php
index 2dd717986f7066fa3b8cca23fae4a04c063aa5df..268b257bc4be6cccfa1f20302b767adcb3ef0454 100644
--- a/interface/lib/classes/remoting.inc.php
+++ b/interface/lib/classes/remoting.inc.php
@@ -184,7 +184,31 @@ class remoting {
 		return $app->db->affectedRows() == 1;
 	}
 
-
+	//* Add mail domain
+	public function mail_user_add($session_id, $client_id, $params){
+		global $app;
+	
+		if (!$this->checkPerm($session_id, 'mail_user_add')){
+			$this->server->fault('permission_denied','You do not have the permissions to access this function.');
+			return false;
+		}
+	
+		//* Check if mail domain exists
+		$email_parts = explode('@',$params['email']);
+		$tmp = $app->db->queryOneRecord("SELECT domain FROM mail_domain WHERE domain = '".$app->db->quote($email_parts[1])."'");
+		if($tmp['domain'] != $email_parts[1]) {
+			$this->server->fault('mail_domain_does_not_exist','Mail domain - '.$email_parts[1].' - does not exist.');
+			return false;
+		}
+	
+		//* Set a few params to non empty values that will be overwritten by mail_plugin
+		if (!isset($params['uid'])) $params['uid'] = 999989999;
+		if (!isset($params['gid'])) $params['gid'] = 999989999;
+	
+		$affected_rows = $this->insertQuery('../mail/form/mail_user.tform.php', $client_id, $params);
+		return $affected_rows;
+	}
+	
 	//** protected functions -----------------------------------------------------------------------------------
 
 
diff --git a/interface/web/admin/lib/lang/ar_server_config.lng b/interface/web/admin/lib/lang/ar_server_config.lng
index 1c21551a82bcaa7b066b1c885ee1a09d8892710b..26e13b40a7ee69760e96d83dcf8e12eedf4e40b8 100644
--- a/interface/web/admin/lib/lang/ar_server_config.lng
+++ b/interface/web/admin/lib/lang/ar_server_config.lng
@@ -24,6 +24,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Mailuser Name';
 $wb['mailuser_group_txt'] = 'Mailuser Group';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost User';
 $wb['relayhost_password_txt'] = 'Relayhost Password';
diff --git a/interface/web/admin/lib/lang/bg_server_config.lng b/interface/web/admin/lib/lang/bg_server_config.lng
index c050aad0298fea158f53c7824890f43b87b02f0f..db043eea8584d7fbc89cbd821dbcd5e86d957b91 100644
--- a/interface/web/admin/lib/lang/bg_server_config.lng
+++ b/interface/web/admin/lib/lang/bg_server_config.lng
@@ -22,6 +22,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Mailuser Name';
 $wb['mailuser_group_txt'] = 'Mailuser Group';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost User';
 $wb['relayhost_password_txt'] = 'Relayhost Password';
diff --git a/interface/web/admin/lib/lang/br_server_config.lng b/interface/web/admin/lib/lang/br_server_config.lng
index 71288a9aa0fde1e4c73c53c542eb2a9dc549e56a..67e8a20ec653313822e294cefccf456035ef88c5 100644
--- a/interface/web/admin/lib/lang/br_server_config.lng
+++ b/interface/web/admin/lib/lang/br_server_config.lng
@@ -23,6 +23,7 @@ $wb['mailuser_uid_txt'] = 'UID usuário de email';
 $wb['mailuser_gid_txt'] = 'GID usuário de email';
 $wb['mailuser_name_txt'] = 'Nome usuário de email';
 $wb['mailuser_group_txt'] = 'Grupo usuário de email';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Host Relay';
 $wb['relayhost_user_txt'] = 'Usuário do Host Relay';
 $wb['relayhost_password_txt'] = 'Senha do Host Relay';
diff --git a/interface/web/admin/lib/lang/cz_server_config.lng b/interface/web/admin/lib/lang/cz_server_config.lng
index 18e833e31a76bd6b3ef5b387ebcbd8ec4dc4fdbc..a6601710958d7c096d8179821368580ba27f699a 100644
--- a/interface/web/admin/lib/lang/cz_server_config.lng
+++ b/interface/web/admin/lib/lang/cz_server_config.lng
@@ -24,6 +24,7 @@ $wb['mailuser_uid_txt'] = 'Mail uživatel UID';
 $wb['mailuser_gid_txt'] = 'Mail uživatel GID';
 $wb['mailuser_name_txt'] = 'Mail uživatel jméno';
 $wb['mailuser_group_txt'] = 'Mail uživatel skupina';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost uživatel';
 $wb['relayhost_password_txt'] = 'Relayhost heslo';
diff --git a/interface/web/admin/lib/lang/de_server_config.lng b/interface/web/admin/lib/lang/de_server_config.lng
index 5f615cc7f8042c7eb13335458e7ecb801b395496..c9673b2804b8eeb20cc8590d30a449651e46148d 100644
--- a/interface/web/admin/lib/lang/de_server_config.lng
+++ b/interface/web/admin/lib/lang/de_server_config.lng
@@ -25,6 +25,7 @@ $wb['mailuser_uid_txt'] = 'Mailbenutzer UID';
 $wb['mailuser_gid_txt'] = 'Mailbenutzer GID';
 $wb['mailuser_name_txt'] = 'Mailbenutzer Name';
 $wb['mailuser_group_txt'] = 'Mailbenutzer Gruppe';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Website Linux Uid für Mailboxen (nur wenn beides auf gleichem Server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost Benutzer';
 $wb['relayhost_password_txt'] = 'Relayhost Passwort';
diff --git a/interface/web/admin/lib/lang/el_server_config.lng b/interface/web/admin/lib/lang/el_server_config.lng
index 169a5608d8eed4358157201094a7e8805410a91a..407bc72c5f0a8f31ffe1b755e6b9ae928c09e04b 100644
--- a/interface/web/admin/lib/lang/el_server_config.lng
+++ b/interface/web/admin/lib/lang/el_server_config.lng
@@ -24,6 +24,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Όνομα Mailuser';
 $wb['mailuser_group_txt'] = 'Ομάδα Mailuser';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Χρήστης Relayhost';
 $wb['relayhost_password_txt'] = 'Συνθηματικό Relayhost';
diff --git a/interface/web/admin/lib/lang/en_server_config.lng b/interface/web/admin/lib/lang/en_server_config.lng
index 07e94af875a1d97c685846ecc1f62b32bb57edbd..e472859b12896b791e6ed03789e2dc37e410583e 100644
--- a/interface/web/admin/lib/lang/en_server_config.lng
+++ b/interface/web/admin/lib/lang/en_server_config.lng
@@ -36,6 +36,7 @@ $wb["mailuser_uid_txt"] = 'Mailuser UID';
 $wb["mailuser_gid_txt"] = 'Mailuser GID';
 $wb["mailuser_name_txt"] = 'Mailuser Name';
 $wb["mailuser_group_txt"] = 'Mailuser Group';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb["relayhost_txt"] = 'Relayhost';
 $wb["relayhost_user_txt"] = 'Relayhost User';
 $wb["relayhost_password_txt"] = 'Relayhost Password';
diff --git a/interface/web/admin/lib/lang/es_server_config.lng b/interface/web/admin/lib/lang/es_server_config.lng
index 1987c5145e729c2458d3db3ff8166b830e3a59a1..2088dba09ff36ddb368598f48e6fb5e2b4e59f3d 100644
--- a/interface/web/admin/lib/lang/es_server_config.lng
+++ b/interface/web/admin/lib/lang/es_server_config.lng
@@ -22,6 +22,7 @@ $wb['mailuser_uid_txt'] = 'UID usuario de correo';
 $wb['mailuser_gid_txt'] = 'GID usuario de correo';
 $wb['mailuser_name_txt'] = 'Nombre del usuario de correo';
 $wb['mailuser_group_txt'] = 'Grupo del usuario de correo';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Servidor de retransmisión';
 $wb['relayhost_user_txt'] = 'Usuario de retransmisión';
 $wb['relayhost_password_txt'] = 'Contraseña de retramisión';
diff --git a/interface/web/admin/lib/lang/fi_server_config.lng b/interface/web/admin/lib/lang/fi_server_config.lng
index efa122033c8a22c75675bb5c2caaaf377f186a79..fe203bea32cbde7f1ed8b5c5ffe7a3b5cbc91e97 100755
--- a/interface/web/admin/lib/lang/fi_server_config.lng
+++ b/interface/web/admin/lib/lang/fi_server_config.lng
@@ -22,6 +22,7 @@ $wb['mailuser_uid_txt'] = 'Käyttäjätunnus';
 $wb['mailuser_gid_txt'] = 'Käyttäjäryhmä';
 $wb['mailuser_name_txt'] = 'Postikäyttäjän nimi';
 $wb['mailuser_group_txt'] = 'Postikäyttäjän ryhmä';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Edelleenlähetyspalvelin';
 $wb['relayhost_user_txt'] = 'Edelleenlähetyspalvelimen käyttäjätunnus';
 $wb['relayhost_password_txt'] = 'Edelleenlähetyspalvelimen salasana';
diff --git a/interface/web/admin/lib/lang/fr_server_config.lng b/interface/web/admin/lib/lang/fr_server_config.lng
index 32779c783ad81112aac53b0896c002536f26a166..f61a4096a1e762dd9292f170cabdb947fea51d41 100644
--- a/interface/web/admin/lib/lang/fr_server_config.lng
+++ b/interface/web/admin/lib/lang/fr_server_config.lng
@@ -24,6 +24,7 @@ $wb['mailuser_uid_txt'] = 'UID de l\'utilisateur mail';
 $wb['mailuser_gid_txt'] = 'GID de l\'utilisateur mail';
 $wb['mailuser_name_txt'] = 'Nom d\'utilisateur mail';
 $wb['mailuser_group_txt'] = 'Groupe de l\'utilisateur mail';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Hôte de relais';
 $wb['relayhost_user_txt'] = 'Utilisateur du relais';
 $wb['relayhost_password_txt'] = 'Mot de passe du relais';
diff --git a/interface/web/admin/lib/lang/hr_server_config.lng b/interface/web/admin/lib/lang/hr_server_config.lng
index a441f968ade3df8d3657640581bd0954cc67a9eb..d7880eecb4af3c1ddf73071a58385d229546e287 100644
--- a/interface/web/admin/lib/lang/hr_server_config.lng
+++ b/interface/web/admin/lib/lang/hr_server_config.lng
@@ -23,6 +23,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Mailuser ime';
 $wb['mailuser_group_txt'] = 'Mailuser grupa';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost korisnik';
 $wb['relayhost_password_txt'] = 'Relayhost Å¡ifra';
diff --git a/interface/web/admin/lib/lang/hu_server_config.lng b/interface/web/admin/lib/lang/hu_server_config.lng
index 0be61efd12652147da16ba0948338ba905abedc9..db881852ad961946f77ed3be817d8dbdcb327aa8 100644
--- a/interface/web/admin/lib/lang/hu_server_config.lng
+++ b/interface/web/admin/lib/lang/hu_server_config.lng
@@ -22,6 +22,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Mailuser Name';
 $wb['mailuser_group_txt'] = 'Mailuser Group';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost User';
 $wb['relayhost_password_txt'] = 'Relayhost Password';
diff --git a/interface/web/admin/lib/lang/id_server_config.lng b/interface/web/admin/lib/lang/id_server_config.lng
index 54a4493226e8c1580c076732c522e986d2445a29..dfa67f9ea7fafd92764d577750adf2a187d6eddb 100644
--- a/interface/web/admin/lib/lang/id_server_config.lng
+++ b/interface/web/admin/lib/lang/id_server_config.lng
@@ -24,6 +24,7 @@ $wb['mailuser_uid_txt'] = 'UID Pengguna Mail';
 $wb['mailuser_gid_txt'] = 'GID Pengguna Mail';
 $wb['mailuser_name_txt'] = 'Nama Pengguna Mail';
 $wb['mailuser_group_txt'] = 'Grup Pengguna Mail';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Pengguna Relayhost';
 $wb['relayhost_password_txt'] = 'Kata Sandi Relayhost';
diff --git a/interface/web/admin/lib/lang/it_server_config.lng b/interface/web/admin/lib/lang/it_server_config.lng
index d04076804781aef0e8be0ac067a03330eebe3ab1..33101e9717bf5a716531272a48e947aa8a638384 100644
--- a/interface/web/admin/lib/lang/it_server_config.lng
+++ b/interface/web/admin/lib/lang/it_server_config.lng
@@ -21,6 +21,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Mailuser Name';
 $wb['mailuser_group_txt'] = 'Mailuser Group';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost User';
 $wb['relayhost_password_txt'] = 'Relayhost Password';
diff --git a/interface/web/admin/lib/lang/ja_server_config.lng b/interface/web/admin/lib/lang/ja_server_config.lng
index 890bb568b98fcc3058fdbb8550fce1ed78f85246..46e8b21b7c5a930279e50246a0d87338d6f4677b 100644
--- a/interface/web/admin/lib/lang/ja_server_config.lng
+++ b/interface/web/admin/lib/lang/ja_server_config.lng
@@ -24,6 +24,7 @@ $wb['mailuser_uid_txt'] = 'メールユーザーのUID';
 $wb['mailuser_gid_txt'] = 'メールユーザーのGID';
 $wb['mailuser_name_txt'] = 'メールユーザー名';
 $wb['mailuser_group_txt'] = 'メールユーザーグループ';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'リレーホスト';
 $wb['relayhost_user_txt'] = 'リレーホストユーザー';
 $wb['relayhost_password_txt'] = 'リレーホストパスワード';
diff --git a/interface/web/admin/lib/lang/nl_server_config.lng b/interface/web/admin/lib/lang/nl_server_config.lng
index 5d08e91f0bacab4214446c36c3440b7c52e6c3ae..6847356d4ec19c0be2b9be323b245fffe91edd91 100644
--- a/interface/web/admin/lib/lang/nl_server_config.lng
+++ b/interface/web/admin/lib/lang/nl_server_config.lng
@@ -24,6 +24,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Mailuser name';
 $wb['mailuser_group_txt'] = 'Mailuser groep';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost gebruiker';
 $wb['relayhost_password_txt'] = 'Relayhost wachtwoord';
diff --git a/interface/web/admin/lib/lang/pl_server_config.lng b/interface/web/admin/lib/lang/pl_server_config.lng
index 32c4c00e5d973350023cf3f8766757e8bf5bbc73..ec51f689a7575f040c51e06a11a9351c869a26de 100644
--- a/interface/web/admin/lib/lang/pl_server_config.lng
+++ b/interface/web/admin/lib/lang/pl_server_config.lng
@@ -24,6 +24,7 @@ $wb['mailuser_uid_txt'] = 'UID użytkownika e-mail';
 $wb['mailuser_gid_txt'] = 'GID użytkownika e-mail';
 $wb['mailuser_name_txt'] = 'Nazwa użytkownika e-mail';
 $wb['mailuser_group_txt'] = 'Grupa użytkownika e-mail';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Adres Relayhost';
 $wb['relayhost_user_txt'] = 'Użytkownik Relayhost';
 $wb['relayhost_password_txt'] = 'Hasło Relayhost';
diff --git a/interface/web/admin/lib/lang/pt_server_config.lng b/interface/web/admin/lib/lang/pt_server_config.lng
index e427ed91cbf135c45a35e3f72ff9a4c69c23723a..0fee45fb618ed33cc99469153bfebe18f0dd790b 100644
--- a/interface/web/admin/lib/lang/pt_server_config.lng
+++ b/interface/web/admin/lib/lang/pt_server_config.lng
@@ -23,6 +23,7 @@ $wb['mailuser_uid_txt'] = 'UID utilizador de email';
 $wb['mailuser_gid_txt'] = 'GID utilizador de email';
 $wb['mailuser_name_txt'] = 'Nome utilizador de email';
 $wb['mailuser_group_txt'] = 'Grupo utilizador de email';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Host Relay';
 $wb['relayhost_user_txt'] = 'Utilizador do Host Relay';
 $wb['relayhost_password_txt'] = 'Senha do Host Relay';
diff --git a/interface/web/admin/lib/lang/ro_server_config.lng b/interface/web/admin/lib/lang/ro_server_config.lng
index 55b7355602bdb36d8b709a0eba07eff66656c9a5..e0a43db87b57af309096fbee505e59ea336841f4 100644
--- a/interface/web/admin/lib/lang/ro_server_config.lng
+++ b/interface/web/admin/lib/lang/ro_server_config.lng
@@ -23,6 +23,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Mailuser Name';
 $wb['mailuser_group_txt'] = 'Mailuser Group';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost User';
 $wb['relayhost_password_txt'] = 'Relayhost Password';
diff --git a/interface/web/admin/lib/lang/ru_server_config.lng b/interface/web/admin/lib/lang/ru_server_config.lng
index 5ae21a926237e324dffde8648c78834b1056a6ec..79cdfe0b3a1e80d7b39d2ce1806259a7107b4829 100644
--- a/interface/web/admin/lib/lang/ru_server_config.lng
+++ b/interface/web/admin/lib/lang/ru_server_config.lng
@@ -21,6 +21,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Имя Mailuser';
 $wb['mailuser_group_txt'] = 'Группа Mailuser';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relay-хост';
 $wb['relayhost_user_txt'] = 'Логин Relay-хоста';
 $wb['relayhost_password_txt'] = 'Пароль Relay-хоста';
diff --git a/interface/web/admin/lib/lang/se_server_config.lng b/interface/web/admin/lib/lang/se_server_config.lng
index 089e629be37fbd044f7ddd8d5fe7511e5f1c21e4..bf3fe039b6e9696d71e858c8dbdaac481e5c961d 100644
--- a/interface/web/admin/lib/lang/se_server_config.lng
+++ b/interface/web/admin/lib/lang/se_server_config.lng
@@ -22,6 +22,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Mailuser Name';
 $wb['mailuser_group_txt'] = 'Mailuser Group';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost User';
 $wb['relayhost_password_txt'] = 'Relayhost Password';
diff --git a/interface/web/admin/lib/lang/sk_server_config.lng b/interface/web/admin/lib/lang/sk_server_config.lng
index c01606bf04c98c6b2c01de87cc1c3b367a0d70ff..74ff9940386347d181d98bd1e0df9e7783c0f9ef 100644
--- a/interface/web/admin/lib/lang/sk_server_config.lng
+++ b/interface/web/admin/lib/lang/sk_server_config.lng
@@ -24,6 +24,7 @@ $wb['mailuser_uid_txt'] = 'Mailuser UID';
 $wb['mailuser_gid_txt'] = 'Mailuser GID';
 $wb['mailuser_name_txt'] = 'Mailuser Meno';
 $wb['mailuser_group_txt'] = 'Mailuser Skupina';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost uživateľ';
 $wb['relayhost_password_txt'] = 'Relayhost heslo';
diff --git a/interface/web/admin/lib/lang/tr_server_config.lng b/interface/web/admin/lib/lang/tr_server_config.lng
index 81595ff565ecc71284e56bef719c49a4432e201b..fe2b28697f0e2a74b0829c34f4f77f3b31a2799b 100644
--- a/interface/web/admin/lib/lang/tr_server_config.lng
+++ b/interface/web/admin/lib/lang/tr_server_config.lng
@@ -24,6 +24,7 @@ $wb['mailuser_uid_txt'] = 'Mail kullanıcısı UID';
 $wb['mailuser_gid_txt'] = 'Mail kullanıcısı GID';
 $wb['mailuser_name_txt'] = 'Mail kullanıcısı Adı';
 $wb['mailuser_group_txt'] = 'Mail kullanıcısı Grubu';
+$wb['mailbox_virtual_uidgid_maps_txt'] = 'Use Websites Linux uid for mailbox (only if both on the same server)';
 $wb['relayhost_txt'] = 'Relayhost';
 $wb['relayhost_user_txt'] = 'Relayhost Kullanıcı';
 $wb['relayhost_password_txt'] = 'Relayhost Åžifre';
diff --git a/interface/web/admin/templates/server_config_mail_edit.htm b/interface/web/admin/templates/server_config_mail_edit.htm
index 6ab03eb9bd630caf06ab6a41a5c8d788cd314afa..991f1b0cea39df974c3b1edbdb2b45d79363eaaf 100644
--- a/interface/web/admin/templates/server_config_mail_edit.htm
+++ b/interface/web/admin/templates/server_config_mail_edit.htm
@@ -55,6 +55,12 @@
                 <label for="mailuser_group">{tmpl_var name='mailuser_group_txt'}</label>
                 <input name="mailuser_group" id="mailuser_group" value="{tmpl_var name='mailuser_group'}" size="10" maxlength="255" type="text" class="textInput formLengthHalf" />
             </div>
+            <div class="ctrlHolder">
+                <p class="label">{tmpl_var name='mailbox_virtual_uidgid_maps_txt'}</p>
+                <div class="multiField">
+                    {tmpl_var name='mailbox_virtual_uidgid_maps'}
+                </div>
+            </div>
             <div class="ctrlHolder">
                 <label for="relayhost">{tmpl_var name='relayhost_txt'}</label>
                 <input name="relayhost" id="relayhost" value="{tmpl_var name='relayhost'}" size="40" maxlength="255" type="text" class="textInput formLengthHalf" />
diff --git a/interface/web/mail/mail_user_edit.php b/interface/web/mail/mail_user_edit.php
index 61f27cb2608565dff7aa49f5d8d2d04e00764e0e..435489f0909e1a65964eff4c0be8f93d45a43da1 100644
--- a/interface/web/mail/mail_user_edit.php
+++ b/interface/web/mail/mail_user_edit.php
@@ -203,9 +203,11 @@ class page_action extends tform_actions {
 			$maildir = str_replace("[localpart]", strtolower($_POST["email_local_part"]), $maildir);
 			$this->dataRecord["maildir"] = $maildir;
 			$this->dataRecord["homedir"] = $mail_config["homedir_path"];
-			$this->dataRecord["uid"] = $mail_config["mailuser_uid"];
-			$this->dataRecord["gid"] = $mail_config["mailuser_gid"];
-
+			
+			// Will be overwritten by mail_plugin
+			$this->dataRecord['uid'] = 999989999;
+			$this->dataRecord['gid'] = 999989999;
+				
 			//* Check if there is no alias or forward with this address
 			$tmp = $app->db->queryOneRecord("SELECT count(forwarding_id) as number FROM mail_forwarding WHERE active = 'y' AND source = '".$app->db->quote($this->dataRecord["email"])."'");
 			if($tmp['number'] > 0) $app->tform->errorMessage .= $app->tform->lng("duplicate_alias_or_forward_txt")."<br>";
diff --git a/interface/web/themes/default-304/templates/admin/server_config_mail_edit.htm b/interface/web/themes/default-304/templates/admin/server_config_mail_edit.htm
index 72292b32bf8c35987308ace171d16ab39c6b331e..7293b2ca8b91db7948ad6e17702e5ed2c7074b2a 100644
--- a/interface/web/themes/default-304/templates/admin/server_config_mail_edit.htm
+++ b/interface/web/themes/default-304/templates/admin/server_config_mail_edit.htm
@@ -51,6 +51,12 @@
                 <label for="mailuser_group">{tmpl_var name='mailuser_group_txt'}</label>
                 <input name="mailuser_group" id="mailuser_group" value="{tmpl_var name='mailuser_group'}" size="10" maxlength="255" type="text" class="textInput formLengthHalf" />
             </div>
+            <div class="ctrlHolder">
+                <p class="label">{tmpl_var name='mailbox_virtual_uidgid_maps_txt'}</p>
+                <div class="multiField">
+                    {tmpl_var name='mailbox_virtual_uidgid_maps'}
+                </div>
+            </div>
             <div class="ctrlHolder">
                 <label for="relayhost">{tmpl_var name='relayhost_txt'}</label>
                 <input name="relayhost" id="relayhost" value="{tmpl_var name='relayhost'}" size="40" maxlength="255" type="text" class="textInput formLengthHalf" />
diff --git a/interface/web/themes/default-304/templates/mail/spamfilter_config_mail_edit.htm b/interface/web/themes/default-304/templates/mail/spamfilter_config_mail_edit.htm
index 524c9804b0a9dd45863d6c4eae2dd22b0aee66cc..e51a780a57d7ebc6d8560202e1e80a6193086c97 100644
--- a/interface/web/themes/default-304/templates/mail/spamfilter_config_mail_edit.htm
+++ b/interface/web/themes/default-304/templates/mail/spamfilter_config_mail_edit.htm
@@ -33,6 +33,12 @@
                 <label for="mailuser_group" class="wf_preField">{tmpl_var name='mailuser_group_txt'}</label>
                 <input type="text" id="mailuser_group" name="mailuser_group" value="{tmpl_var name='mailuser_group'}" size="10" maxlength="255">
             </span>
+            <div class="ctrlHolder">
+                <p class="label">{tmpl_var name='mailbox_virtual_uidgid_maps_txt'}</p>
+                <div class="multiField">
+                    {tmpl_var name='mailbox_virtual_uidgid_maps'}
+                </div>
+            </div>
             <span class="wf_oneField">
                 <label for="relayhost" class="wf_preField">{tmpl_var name='relayhost_txt'}</label>
                 <input type="text" id="relayhost" name="relayhost" value="{tmpl_var name='relayhost'}" size="40" maxlength="255">
diff --git a/server/lib/classes/system.inc.php b/server/lib/classes/system.inc.php
index a393384c96b7c77bca45360f7643fc85ea414c4e..9b7d9940a08e7837c48c60e323d12e4c7116da62 100644
--- a/server/lib/classes/system.inc.php
+++ b/server/lib/classes/system.inc.php
@@ -605,6 +605,30 @@ class system{
 
 
 
+	/**
+	 * Get the user from an user id
+	 *
+	 */
+	function getuser($uid){
+		global $app;
+		$user_datei = $this->server_conf['passwd_datei'];
+		$users = $app->file->no_comments($user_datei);
+		$lines = explode("\n", $users);
+		if(is_array($lines)){
+			foreach($lines as $line){
+				if(trim($line) != ''){
+					list($f1, $f2, $f3,) = explode(':', $line);
+					if($f3 == $uid) return $f1;
+				}
+			}
+		}
+		return false;
+	}
+
+
+
+
+
 	/**
 	 * Get the user id from an user
 	 *
@@ -632,6 +656,30 @@ class system{
 
 
 
+	/**
+	 * Get the group from a group id
+	 *
+	 */
+	function getgroup($gid){
+		global $app;
+		$group_datei = $this->server_conf['group_datei'];
+		$groups = $app->file->no_comments($group_datei);
+		$lines = explode("\n", $groups);
+		if(is_array($lines)){
+			foreach($lines as $line){
+				if(trim($line) != ""){
+					list($f1, $f2, $f3, $f4) = explode(':', $line);
+					if($f3 == $gid) return $f1;
+				}
+			}
+		}
+		return false;
+	}
+
+
+
+
+
 	/**
 	 * Get the group id from an group
 	 *
@@ -1476,7 +1524,7 @@ class system{
 		}
 	}
 
-	function maildirmake($maildir_path, $user = '', $subfolder = '') {
+	function maildirmake($maildir_path, $user = '', $group = '', $subfolder = '') {
 
 		global $app;
 
@@ -1490,22 +1538,24 @@ class system{
 
 		if($user != '' && $user != 'root' && $this->is_user($user)) {
 			$user = escapeshellcmd($user);
-			// I assume that the name of the (vmail group) is the same as the name of the mail user in ISPConfig 3
-			$group = $user;
 			if(is_dir($dir)) $this->chown($dir, $user);
-			if(is_dir($dir)) $this->chgrp($dir, $group);
 
 			$chown_mdsub = true;
 		}
 
+		if($group != '' && $group != 'root' && $this->is_group($group)) {
+			$group = escapeshellcmd($group);
+			if(is_dir($dir)) $this->chgrp($dir, $group);
+		
+			$chgrp_mdsub = true;
+		}
+
 		$maildirsubs = array('cur', 'new', 'tmp');
 
 		foreach ($maildirsubs as $mdsub) {
 			if(!is_dir($dir.'/'.$mdsub)) mkdir($dir.'/'.$mdsub, 0700, true);
-			if ($chown_mdsub) {
-				chown($dir.'/'.$mdsub, $user);
-				chgrp($dir.'/'.$mdsub, $group);
-			}
+			if ($chown_mdsub) chown($dir.'/'.$mdsub, $user);
+			if ($chgrp_mdsub) chgrp($dir.'/'.$mdsub, $group);
 		}
 
 		chmod($dir, 0700);
diff --git a/server/plugins-available/mail_plugin.inc.php b/server/plugins-available/mail_plugin.inc.php
index 4a308da615a5f805d83e514819ca036eef960c0d..72b69a3c119332b7e851e67ba30a39cf4c572fe2 100644
--- a/server/plugins-available/mail_plugin.inc.php
+++ b/server/plugins-available/mail_plugin.inc.php
@@ -92,17 +92,48 @@ class mail_plugin {
 		unset($tmp_basepath_parts[count($tmp_basepath_parts)-1]);
 		$base_path = implode('/', $tmp_basepath_parts);
 
+		//* Set the email-uid and gid if not given
+		if (($data['new']['uid'] == 999989999) || ($data['new']['gid'] == 999989999)) {
+			$app->log('Setting uid and gid automatically',LOGLEVEL_DEBUG);
+			if ($mail_config["mailbox_virtual_uidgid_maps"] == 'y') {
+				$app->log('Map uid to linux-user',LOGLEVEL_DEBUG);
+				$email_parts = explode('@',$data['new']['email']);
+				$webdomain = $app->db->queryOneRecord("SELECT domain_id, server_id, system_user, parent_domain_id FROM web_domain WHERE domain = '".$app->db->quote($email_parts[1])."'");
+				if ($webdomain) {
+					while ($webdomain['parent_domain_id'] != 0) {
+						$webdomain = $app->db->queryOneRecord("SELECT domain_id, server_id, system_user, parent_domain_id FROM web_domain WHERE domain_id = '".$webdomain['parent_domain_id']."'");
+					}
+					$app->log($data['new']['server_id'].' == '.$webdomain['server_id'],LOGLEVEL_DEBUG);
+
+					// only if web and mailserver are identical
+					if ($data['new']['server_id'] == $webdomain['server_id']) {
+						$data['new']['uid'] = $app->system->getuid($webdomain['system_user']);
+					}
+				}
+			}
+		}
+		// if nothing set before -> use standard mailuser uid and gid vmail
+		if ($data['new']['uid'] == 999989999) $data['new']['uid'] = $mail_config["mailuser_uid"];
+		if ($data['new']['gid'] == 999989999) $data['new']['gid'] = $mail_config["mailuser_gid"];
+		$app->log('Mailuser uid: '.$data['new']['uid'].', gid: '.$data['new']['gid'],LOGLEVEL_DEBUG);
+
+		// update DB if values changed
+		$app->db->query("UPDATE mail_user SET uid = ".$data['new']['uid'].", gid = ".$data['new']['gid']." WHERE mailuser_id = ".$data['new']['mailuser_id']);
+
+		// now get names of uid and gid
+		$user = $app->system->getuser($data['new']['uid']);
+		$group = $app->system->getgroup($data['new']['gid']);
 		//* Create the mail domain directory, if it does not exist
 		if(!empty($base_path) && !is_dir($base_path)) {
 			//exec("su -c 'mkdir -p ".escapeshellcmd($base_path)."' ".$mail_config['mailuser_name']);
-			$app->system->mkdirpath($base_path, 0700, $mail_config['mailuser_name'], $mail_config['mailuser_group']);
+			$app->system->mkdirpath($base_path, 0770, $mail_config['mailuser_name'], $mail_config['mailuser_group']); // needs group-access because users of subfolders may differ from vmail
 			$app->log('Created Directory: '.$base_path, LOGLEVEL_DEBUG);
 		}
 
 		// Dovecot uses a different mail layout with a separate 'Maildir' subdirectory.
 		if($mail_config['pop3_imap_daemon'] == 'dovecot') {
 			//exec("su -c 'mkdir -p ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
-			$app->system->mkdirpath($maildomain_path, 0700, $mail_config['mailuser_name'], $mail_config['mailuser_group']);
+			$app->system->mkdirpath($maildomain_path, 0700, $user, $group);
 			$app->log('Created Directory: '.$maildomain_path, LOGLEVEL_DEBUG);
 			$maildomain_path .= '/Maildir';
 		}
@@ -117,46 +148,48 @@ class mail_plugin {
 		if(!empty($maildomain_path) && !is_dir($maildomain_path)) {
 
 			//exec("su -c 'maildirmake ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
-			$app->system->maildirmake($maildomain_path, $mail_config['mailuser_name']);
-
-			exec('chown -R '.$mail_config['mailuser_name'].':'.$mail_config['mailuser_group'].' '.escapeshellcmd($data['new']['maildir']));
-			$app->log('Set ownership on '.escapeshellcmd($data['new']['maildir']), LOGLEVEL_DEBUG);
+			$app->system->maildirmake($maildomain_path, $user, $group);
 
 			//* This is to fix the maildrop quota not being rebuilt after the quota is changed.
 			if($mail_config['pop3_imap_daemon'] != 'dovecot') {
-				if(is_dir($maildomain_path)) exec("su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']); // Avoid maildirmake quota bug, see debian bug #214911
-				$app->log('Created Maildir: '."su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'], LOGLEVEL_DEBUG);
+				if(is_dir($maildomain_path)) exec("su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($maildomain_path)."' ".$user); // Avoid maildirmake quota bug, see debian bug #214911
+				$app->log('Created Maildir: '."su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($maildomain_path)."' ".$user, LOGLEVEL_DEBUG);
 			}
 		}
 
 		if(!is_dir($data['new']['maildir'].'/.Sent')) {
 			//exec("su -c 'maildirmake -f Sent ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
 			//$app->log('Created submaildir Sent: '."su -c 'maildirmake -f Sent ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'],LOGLEVEL_DEBUG);
-			$app->system->maildirmake($maildomain_path, $mail_config['mailuser_name'], 'Sent');
+			$app->system->maildirmake($maildomain_path, $user, $group, 'Sent');
 		}
 		if(!is_dir($data['new']['maildir'].'/.Drafts')) {
 			//exec("su -c 'maildirmake -f Drafts ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
 			//$app->log('Created submaildir Drafts: '."su -c 'maildirmake -f Drafts ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'],LOGLEVEL_DEBUG);
-			$app->system->maildirmake($maildomain_path, $mail_config['mailuser_name'], 'Drafts');
+			$app->system->maildirmake($maildomain_path, $user, $group, 'Drafts');
 		}
 		if(!is_dir($data['new']['maildir'].'/.Trash')) {
 			//exec("su -c 'maildirmake -f Trash ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
 			//$app->log('Created submaildir Trash: '."su -c 'maildirmake -f Trash ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'],LOGLEVEL_DEBUG);
-			$app->system->maildirmake($maildomain_path, $mail_config['mailuser_name'], 'Trash');
+			$app->system->maildirmake($maildomain_path, $user, $group, 'Trash');
 		}
 		if(!is_dir($data['new']['maildir'].'/.Junk')) {
 			//exec("su -c 'maildirmake -f Junk ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
 			//$app->log('Created submaildir Junk: '."su -c 'maildirmake -f Junk ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'],LOGLEVEL_DEBUG);
-			$app->system->maildirmake($maildomain_path, $mail_config['mailuser_name'], 'Junk');
+			$app->system->maildirmake($maildomain_path, $user, $group, 'Junk');
 		}
 
+		// Set permissions now recursive
+		exec('chown -R '.$user.':'.$group.' '.escapeshellcmd($data['new']['maildir']));
+		$app->log('Set ownership on '.escapeshellcmd($data['new']['maildir']), LOGLEVEL_DEBUG);
+
 		//* Set the maildir quota
 		if(is_dir($data['new']['maildir'].'/new') && $mail_config['pop3_imap_daemon'] != 'dovecot') {
 			if($data['new']['quota'] > 0) {
-				if(is_dir($data['new']['maildir'])) exec("su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($data['new']['maildir'])."' ".$mail_config['mailuser_name']);
-				$app->log('Set Maildir quota: '."su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($data['new']['maildir'])."' ".$mail_config['mailuser_name'], LOGLEVEL_DEBUG);
+				if(is_dir($data['new']['maildir'])) exec("su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($data['new']['maildir'])."' ".$user);
+				$app->log('Set Maildir quota: '."su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($data['new']['maildir'])."' ".$user, LOGLEVEL_DEBUG);
 			}
 		}
+		
 
 		//* Send the welcome email message
 		if(file_exists($conf['rootpath'].'/conf-custom/mail/welcome_email_'.$conf['language'].'.txt')) {
@@ -224,16 +257,19 @@ class mail_plugin {
 		unset($tmp_basepath_parts[count($tmp_basepath_parts)-1]);
 		$base_path = implode('/', $tmp_basepath_parts);
 
+		$user = $app->system->getuser($data['new']['uid']);
+		$group = $app->system->getgroup($data['new']['gid']);
+
 		//* Create the mail domain directory, if it does not exist
 		if(!empty($base_path) && !is_dir($base_path)) {
 			//exec("su -c 'mkdir -p ".escapeshellcmd($base_path)."' ".$mail_config['mailuser_name']);
-			$app->system->mkdirpath($base_path, 0700, $mail_config['mailuser_name'], $mail_config['mailuser_group']);
+			$app->system->mkdirpath($base_path, 0770, $mail_config['mailuser_name'], $mail_config['mailuser_group']); // needs group-access because users of subfolders may differ from vmail
 			$app->log('Created Directory: '.$base_path, LOGLEVEL_DEBUG);
 		}
 
 		// Dovecot uses a different mail layout with a separate 'Maildir' subdirectory.
 		if($mail_config['pop3_imap_daemon'] == 'dovecot') {
-			$app->system->mkdirpath($maildomain_path, 0700, $mail_config['mailuser_name'], $mail_config['mailuser_group']);
+			$app->system->mkdirpath($maildomain_path, 0700, $user, $group);
 			$app->log('Created Directory: '.$base_path, LOGLEVEL_DEBUG);
 			$maildomain_path .= '/Maildir';
 		}
@@ -248,15 +284,13 @@ class mail_plugin {
 		if(!empty($maildomain_path) && !is_dir($maildomain_path.'/new')) {
 			//exec("su -c 'maildirmake ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
 			//$app->log("Created Maildir "."su -c 'maildirmake ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'],LOGLEVEL_DEBUG);
-			$app->system->maildirmake($maildomain_path, $mail_config['mailuser_name']);
+			$app->system->maildirmake($maildomain_path, $user, $group);
 
-			exec('chown -R '.$mail_config['mailuser_name'].':'.$mail_config['mailuser_group'].' '.escapeshellcmd($data['new']['maildir']));
-			$app->log('Set ownership on '.escapeshellcmd($data['new']['maildir']), LOGLEVEL_DEBUG);
 			//* This is to fix the maildrop quota not being rebuilt after the quota is changed.
 			if($mail_config['pop3_imap_daemon'] != 'dovecot') {
 				if($data['new']['quota'] > 0) {
-					if(is_dir($maildomain_path)) exec("su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']); // Avoid maildirmake quota bug, see debian bug #214911
-					$app->log('Updated Maildir quota: '."su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'], LOGLEVEL_DEBUG);
+					if(is_dir($maildomain_path)) exec("su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($maildomain_path)."' ".$user); // Avoid maildirmake quota bug, see debian bug #214911
+					$app->log('Updated Maildir quota: '."su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($maildomain_path)."' ".$user, LOGLEVEL_DEBUG);
 				} else {
 					if(file_exists($data['new']['maildir'].'/maildirsize')) unlink($data['new']['maildir'].'/maildirsize');
 					$app->log('Set Maildir quota to unlimited.', LOGLEVEL_DEBUG);
@@ -267,24 +301,28 @@ class mail_plugin {
 		if(!is_dir($data['new']['maildir'].'/.Sent')) {
 			//exec("su -c 'maildirmake -f Sent ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
 			//$app->log('Created submaildir Sent: '."su -c 'maildirmake -f Sent ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'],LOGLEVEL_DEBUG);
-			$app->system->maildirmake($maildomain_path, $mail_config['mailuser_name'], 'Sent');
+			$app->system->maildirmake($maildomain_path, $user, $group, 'Sent');
 		}
 		if(!is_dir($data['new']['maildir'].'/.Drafts')) {
 			//exec("su -c 'maildirmake -f Drafts ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
 			//$app->log('Created submaildir Drafts: '."su -c 'maildirmake -f Drafts ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'],LOGLEVEL_DEBUG);
-			$app->system->maildirmake($maildomain_path, $mail_config['mailuser_name'], 'Drafts');
+			$app->system->maildirmake($maildomain_path, $user, $group, 'Drafts');
 		}
 		if(!is_dir($data['new']['maildir'].'/.Trash')) {
 			//exec("su -c 'maildirmake -f Trash ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
 			//$app->log('Created submaildir Trash: '."su -c 'maildirmake -f Trash ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'],LOGLEVEL_DEBUG);
-			$app->system->maildirmake($maildomain_path, $mail_config['mailuser_name'], 'Trash');
+			$app->system->maildirmake($maildomain_path, $user, $group, 'Trash');
 		}
 		if(!is_dir($data['new']['maildir'].'/.Junk')) {
 			//exec("su -c 'maildirmake -f Junk ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name']);
 			//$app->log('Created submaildir Junk: '."su -c 'maildirmake -f Junk ".escapeshellcmd($maildomain_path)."' ".$mail_config['mailuser_name'],LOGLEVEL_DEBUG);
-			$app->system->maildirmake($maildomain_path, $mail_config['mailuser_name'], 'Junk');
+			$app->system->maildirmake($maildomain_path, $user, $group, 'Junk');
 		}
 
+		// Set permissions now recursive
+		exec('chown -R '.$user.':'.$group.' '.escapeshellcmd($data['new']['maildir']));
+		$app->log('Set ownership on '.escapeshellcmd($data['new']['maildir']), LOGLEVEL_DEBUG);
+
 		// Move mailbox, if domain has changed and delete old mailbox
 		if($data['new']['maildir'] != $data['old']['maildir'] && is_dir($data['old']['maildir'])) {
 			if(is_dir($data['new']['maildir'])) {
@@ -301,8 +339,8 @@ class mail_plugin {
 		// Courier Layout
 		if(is_dir($data['new']['maildir'].'/new') && $mail_config['pop3_imap_daemon'] != 'dovecot') {
 			if($data['new']['quota'] > 0) {
-				if(is_dir($data['new']['maildir'])) exec("su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($data['new']['maildir'])."' ".$mail_config['mailuser_name']);
-				$app->log('Updated Maildir quota: '."su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($data['new']['maildir'])."' ".$mail_config['mailuser_name'], LOGLEVEL_DEBUG);
+				if(is_dir($data['new']['maildir'])) exec("su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($data['new']['maildir'])."' ".$user);
+				$app->log('Updated Maildir quota: '."su -c 'maildirmake -q ".$data['new']['quota']."S ".escapeshellcmd($data['new']['maildir'])."' ".$user, LOGLEVEL_DEBUG);
 			} else {
 				if(file_exists($data['new']['maildir'].'/maildirsize')) unlink($data['new']['maildir'].'/maildirsize');
 				$app->log('Set Maildir quota to unlimited.', LOGLEVEL_DEBUG);