install_update_dovecot.sh: Fix (permission) error in configuring quota warnings.

install_update_dovecot.sh

@@ -2594,9 +2594,10 @@ fi
 ## -    
 ## -    service quota-warning {
 ## -      executable = script /usr/local/bin/quota-warning.sh
-## -      user = dovecot
+## -      user = vmail
 ## -      unix_listener quota-warning {
 ## -        user = vmail
+## -        mode = 0666
 ## -      }
 ## -    }
 ## -
@@ -2619,9 +2620,10 @@ plugin {
 
 service quota-warning {
   executable = script /usr/local/bin/quota-warning.sh
-  user = dovecot
+  user = vmail
   unix_listener quota-warning {
     user = vmail
+    mode = 0666
   }
 }
 EOF
@@ -2639,7 +2641,7 @@ if $_new ; then
    ## - create the user-warning script
    ## -
    cat <<EOF >/usr/local/bin/quota-warning.sh
-#!/bin/sh
+#!/usr/bin/env bash
 
 # author:   zhang huangbin <michaelbibby (at) gmail.com>
 # purpose:  send mail to notify user when his mailbox quota exceeds a
@@ -2651,7 +2653,7 @@ LANG=en_US.UTF-8
 percent=\$1
 user=\$2
 
-cat << EOF | /usr/local/dovecot/libexec/dovecot/deliver -d \${user} -c /usr/local/dovecot/etc/dovecot/dovecot.conf
+cat << EOF | /usr/local/dovecot/libexec/dovecot/deliver -d \${user} -c /usr/local/dovecot/etc/dovecot/dovecot.conf -o "plugin/quota=dict:User quota::noenforcing:proxy::quota"
 date: \`date +"%a, %e %b %Y %H:%M:%S %z"\`
 from: $from_address
 reply-to: $reply_to