this avoids a warning in bounce mails and logs

install/tpl/debian6_dovecot2.conf.master

@@ -8,6 +8,7 @@ ssl_cert = </etc/postfix/smtpd.cert
 ssl_key = </etc/postfix/smtpd.key
 ssl_protocols = !SSLv2 !SSLv3
 mail_max_userip_connections = 100
+mail_plugins = quota
 passdb {
   args = /etc/dovecot/dovecot-sql.conf
   driver = sql
@@ -66,7 +67,6 @@ protocol lmtp {
   postmaster_address = webmaster@localhost
   mail_plugins = quota sieve
 }
-mail_plugins = $mail_plugins quota
 imap_capability=+SEPCIAL-USE XLIST
 namespace inbox {
   inbox = yes

install/tpl/debian_dovecot2.conf.master

@@ -9,6 +9,7 @@ ssl_cert = </etc/postfix/smtpd.cert
 ssl_key = </etc/postfix/smtpd.key
 ssl_protocols = !SSLv2 !SSLv3
 mail_max_userip_connections = 100
+mail_plugins = quota
 passdb {
   args = /etc/dovecot/dovecot-sql.conf
   driver = sql
@@ -64,7 +65,6 @@ protocol lmtp {
   postmaster_address = webmaster@localhost
   mail_plugins = quota sieve
 }
-mail_plugins = $mail_plugins quota
 imap_capability=+SEPCIAL-USE XLIST
 namespace inbox {
   inbox = yes

install/tpl/fedora_dovecot2.conf.master

@@ -7,6 +7,7 @@ mail_privileged_group = vmail
 ssl_cert = </etc/postfix/smtpd.cert
 ssl_key = </etc/postfix/smtpd.key
 ssl_protocols = !SSLv2 !SSLv3
+mail_plugins = quota
 passdb {
   args = /etc/dovecot-sql.conf
   driver = sql
@@ -61,7 +62,6 @@ protocol lmtp {
   postmaster_address = webmaster@localhost
   mail_plugins = quota sieve
 }
-mail_plugins = $mail_plugins quota
 imap_capability=+SEPCIAL-USE XLIST
 namespace inbox {
   inbox = yes

install/tpl/opensuse_dovecot2.conf.master

@@ -7,6 +7,7 @@ mail_privileged_group = vmail
 ssl_cert = </etc/postfix/smtpd.cert
 ssl_key = </etc/postfix/smtpd.key
 ssl_protocols = !SSLv2 !SSLv3
+mail_plugins = quota
 passdb {
   args = /etc/dovecot/dovecot-sql.conf
   driver = sql
@@ -60,7 +61,6 @@ protocol lmtp {
   postmaster_address = webmaster@localhost
   mail_plugins = quota sieve
 }
-mail_plugins = $mail_plugins quota
 imap_capability=+SEPCIAL-USE XLIST
 namespace inbox {
   inbox = yes