diff --git a/install/dist/lib/centos52.lib.php b/install/dist/lib/centos52.lib.php
index 7d9b78caa55758375ab6b051514602971f24ae8a..911152804e9fb5bbcd10aa14c8c2443ee229aa8e 100644
--- a/install/dist/lib/centos52.lib.php
+++ b/install/dist/lib/centos52.lib.php
@@ -123,6 +123,7 @@ class installer extends installer_dist {
 		$content = str_replace('{hostname}', $conf['hostname'], $content);
 		$content = str_replace('/var/spool/amavisd/clamd.sock', '/tmp/clamd.socket', $content);
 		wf($conf["amavis"]["config_dir"].'/amavisd.conf', $content);
+		chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
 
 
 		// Adding the amavisd commands to the postfix configuration
diff --git a/install/dist/lib/centos53.lib.php b/install/dist/lib/centos53.lib.php
index c7e11e50a3ddb4bed6befeeb9e335ca7e3bd1bb8..0ac99f266a4687390fe6c9e77a35f0e5b27ef3d7 100644
--- a/install/dist/lib/centos53.lib.php
+++ b/install/dist/lib/centos53.lib.php
@@ -124,6 +124,7 @@ class installer extends installer_dist {
 		$content = str_replace('{hostname}', $conf['hostname'], $content);
 		$content = str_replace('/var/spool/amavisd/clamd.sock', '/var/run/clamav/clamd.sock', $content);
 		wf($conf["amavis"]["config_dir"].'/amavisd.conf', $content);
+		chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
 
 
 		// Adding the amavisd commands to the postfix configuration
diff --git a/install/dist/lib/centos70.lib.php b/install/dist/lib/centos70.lib.php
index 682833b70f77ee62469a5cbcd62eded1efae61b2..9cee55ff2d88dcf7a2db8df0e4e5111658ce963d 100644
--- a/install/dist/lib/centos70.lib.php
+++ b/install/dist/lib/centos70.lib.php
@@ -124,6 +124,7 @@ class installer extends installer_dist {
 		$content = str_replace('{hostname}', $conf['hostname'], $content);
 		$content = str_replace('/var/spool/amavisd/clamd.sock', '/var/run/clamav/clamd.sock', $content);
 		wf($conf["amavis"]["config_dir"].'/amavisd.conf', $content);
+		chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
 
 
 		// Adding the amavisd commands to the postfix configuration
diff --git a/install/dist/lib/fedora.lib.php b/install/dist/lib/fedora.lib.php
index 7b3fd6e25df51d50896be625076c1a97ea9c6fcf..636a7824efc23b90b0039e9b69fcdea7cdba9bf5 100644
--- a/install/dist/lib/fedora.lib.php
+++ b/install/dist/lib/fedora.lib.php
@@ -522,6 +522,7 @@ class installer_dist extends installer_base {
 		$content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
 		$content = str_replace('{hostname}', $conf['hostname'], $content);
 		wf($conf["amavis"]["config_dir"].'/amavisd.conf', $content);
+		chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
 
 
 		// Adding the amavisd commands to the postfix configuration
@@ -1326,7 +1327,12 @@ class installer_dist extends installer_base {
 		
 		// Add symlink for patch tool
 		if(!is_link('/usr/local/bin/ispconfig_patch')) exec('ln -s /usr/local/ispconfig/server/scripts/ispconfig_patch /usr/local/bin/ispconfig_patch');
-
+		
+		// Change mode of a few files from amavisd
+		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user')) chmod($conf['amavis']['config_dir'].'/conf.d/50-user', 0640);
+		if(is_file($conf['amavis']['config_dir'].'/50-user~')) chmod($conf['amavis']['config_dir'].'/50-user~', 0400);
+		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf')) chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
+		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf~')) chmod($conf['amavis']['config_dir'].'/amavisd.conf~', 0400);
 	}
 }
 
diff --git a/install/dist/lib/gentoo.lib.php b/install/dist/lib/gentoo.lib.php
index d8c3f3818a653c171d2ab161276be2e7ad365974..2e14006280923ee0cc1ac6c1d3d35981b2688e20 100644
--- a/install/dist/lib/gentoo.lib.php
+++ b/install/dist/lib/gentoo.lib.php
@@ -1189,7 +1189,13 @@ class installer extends installer_base
 		
 		// Add symlink for patch tool
 		if(!is_link('/usr/local/bin/ispconfig_patch')) exec('ln -s /usr/local/ispconfig/server/scripts/ispconfig_patch /usr/local/bin/ispconfig_patch');
-
+		
+		// Change mode of a few files from amavisd
+		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user')) chmod($conf['amavis']['config_dir'].'/conf.d/50-user', 0640);
+		if(is_file($conf['amavis']['config_dir'].'/50-user~')) chmod($conf['amavis']['config_dir'].'/50-user~', 0400);
+		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf')) chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
+		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf~')) chmod($conf['amavis']['config_dir'].'/amavisd.conf~', 0400);
+		
 	}
 
 }
diff --git a/install/dist/lib/opensuse.lib.php b/install/dist/lib/opensuse.lib.php
index 55d48884a0b2f5afc297e8330f938ae55df21c31..4c9749eab1cee178ec15e65b1356f9be21758a5f 100644
--- a/install/dist/lib/opensuse.lib.php
+++ b/install/dist/lib/opensuse.lib.php
@@ -570,6 +570,7 @@ class installer_dist extends installer_base {
 		$content = str_replace('{mysql_server_port}', $conf["mysql"]["port"], $content);
 		$content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
 		wf($conf["amavis"]["config_dir"].'/amavisd.conf', $content);
+		chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
 
 
 		// Adding the amavisd commands to the postfix configuration
@@ -1399,7 +1400,12 @@ class installer_dist extends installer_base {
 		
 		// Add symlink for patch tool
 		if(!is_link('/usr/local/bin/ispconfig_patch')) exec('ln -s /usr/local/ispconfig/server/scripts/ispconfig_patch /usr/local/bin/ispconfig_patch');
-
+		
+		// Change mode of a few files from amavisd
+		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user')) chmod($conf['amavis']['config_dir'].'/conf.d/50-user', 0640);
+		if(is_file($conf['amavis']['config_dir'].'/50-user~')) chmod($conf['amavis']['config_dir'].'/50-user~', 0400);
+		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf')) chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
+		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf~')) chmod($conf['amavis']['config_dir'].'/amavisd.conf~', 0400);
 
 	}
 
diff --git a/install/lib/installer_base.lib.php b/install/lib/installer_base.lib.php
index 42c0544743a91ceaaf951fe4f1358bd30ccaa00c..b322f7179dedb5ce4904e596bbbd4bf7e86c1be6 100644
--- a/install/lib/installer_base.lib.php
+++ b/install/lib/installer_base.lib.php
@@ -1099,7 +1099,7 @@ class installer_base {
 		// amavisd user config file
 		$configfile = 'amavisd_user_config';
 		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user')) copy($conf['amavis']['config_dir'].'/conf.d/50-user', $conf['amavis']['config_dir'].'/50-user~');
-		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user~')) chmod($conf['amavis']['config_dir'].'/conf.d/50-user~', 0400);
+		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user~')) chmod($conf['amavis']['config_dir'].'/50-user~', 0400);
 		$content = rfsel($conf['ispconfig_install_dir'].'/server/conf-custom/install/'.$configfile.'.master', 'tpl/'.$configfile.'.master');
 		$content = str_replace('{mysql_server_ispconfig_user}', $conf['mysql']['ispconfig_user'], $content);
 		$content = str_replace('{mysql_server_ispconfig_password}', $conf['mysql']['ispconfig_password'], $content);
@@ -1107,6 +1107,7 @@ class installer_base {
 		$content = str_replace('{mysql_server_port}', $conf['mysql']['port'], $content);
 		$content = str_replace('{mysql_server_ip}', $conf['mysql']['ip'], $content);
 		wf($conf['amavis']['config_dir'].'/conf.d/50-user', $content);
+		chmod($conf['amavis']['config_dir'].'/conf.d/50-user', 0640);
 
 		// TODO: chmod and chown on the config file
 
@@ -2375,6 +2376,13 @@ Email Address []:
 		// Add symlink for patch tool
 		if(!is_link('/usr/local/bin/ispconfig_patch')) exec('ln -s /usr/local/ispconfig/server/scripts/ispconfig_patch /usr/local/bin/ispconfig_patch');
 		
+		// Change mode of a few files from amavisd
+		if(is_file($conf['amavis']['config_dir'].'/conf.d/50-user')) chmod($conf['amavis']['config_dir'].'/conf.d/50-user', 0640);
+		if(is_file($conf['amavis']['config_dir'].'/50-user~')) chmod($conf['amavis']['config_dir'].'/50-user~', 0400);
+		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf')) chmod($conf['amavis']['config_dir'].'/amavisd.conf', 0640);
+		if(is_file($conf['amavis']['config_dir'].'/amavisd.conf~')) chmod($conf['amavis']['config_dir'].'/amavisd.conf~', 0400);
+		
+		
 	}
 
 	public function configure_dbserver() {