Add 'config/dovecot/quota-warning.sh'

config/dovecot/quota-warning.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+PERCENT=$1
+USER=$2
+cat << EOF | /usr/lib/dovecot/dovecot-lda -d $USER -o "plugin/quota=dict:User quota::noenforcing:proxy::sqlquota"
+From: postmaster@linuxize.com
+Subject: Quota warning
+
+Your mailbox is now $PERCENT% full.
+EOF