Added mailQWatch.sh for mailq reporting

Updated README.md with instructions

README.md

@@ -98,3 +98,23 @@ Script sends an email with the rkhunter scan and report.
 apt-get install rkhunter
 ln -s ${PWD}/rkhunter.sh /etc/cron.daily
 </code></pre>
+
+#### mailQWatch.sh
+
+Script checks mailq size on a postfix system and sends an email when queue size is greater than threshold.
+
+Update variables in scripts to suit your needs.
+
+<pre><code>
+QUEUELIMIT=75
+SUBJECT="Mail Queue on $HOST is currently $QUEUECOUNT"
+MAILTO="user@example.com"
+</code></pre>
+
+<b>Installation</b>
+
+As root, sudo will not work.
+
+<pre><code>
+echo "*/5 * * * * ${PWD}/mailQWatch.sh" >> /etc/crontab
+</code></pre>

mailQWatch.sh

@@ -1,16 +1,16 @@
 #!/bin/bash
-# Checks mailQ size
 
-QUEUELIMIT=0
-HOST=$(/bin/hostname)
-QUEUELENGTH=$(/usr/sbin/postqueue -p | tail -n1 | awk '{print $5}')
-QUEUECOUNT=$(echo $queuelength | grep "[0-9]")
+QUEUELIMIT=75
 SUBJECT="Mail Queue on $HOST is currently $QUEUECOUNT"
 MAILTO="mmckinnon@comprofix.com"
 
+HOST=$(/bin/hostname)
+POSTQUEUE=$(which postqueue)
+QUEUELENGTH=$($POSTQUEUE -p | tail -n1 | awk '{print $5}')
+QUEUECOUNT=$(echo $QUEUELENGTH | grep "[0-9]")
+
 if [ "$QUEUECOUNT" == "" ]; then
   exit;
 elif [ "$QUEUECOUNT" -gt "$QUEUELIMIT" ]; then
-#echo $msg | /bin/mail -s "Mail Queue Alert $queuecount ($hostname)" "helpdesk@ambient-it.com.au"
-  /usr/sbin/postqueue -p | /bin/mail -s "$SUBJECT" "$MAILTO"
+  $POSTQUEUE -p | /bin/mail -s "$SUBJECT" "$MAILTO"
 fi