1st commit

postfix_jumpstart.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+ 
+ # This file is part of a collection of bash scripts written and used by me which may be handy in server administration.
+ #
+ # (c) Corrado Mulas <tlc@mulas.me>
+ #
+ # For the full copyright and license information, please view the LICENSE
+ # file that was distributed with this source code.
+ 
+#Please don't run in short intervals if your server processes a truckload of emails, or it will restart postfix and amavis even when everything is ok, slowing down operations. 
+#This script is a dumb way to restart Amavis when it suddenly decides to commit suicide with no apparent reason, avoiding prevention of mail processing. It restarts daemons, then flushes your queue.
+#For a more clever solution, you may use and properly configure Monit.
+#mail@example.com is a mail address where you will be notified when a restart attempt occurs.
+
+QUEUE=$(mailq | grep -c "^[A-F0-9]")
+TIME=$(date)
+
+
+if [ "$QUEUE" -eq "0" ];then
+  echo "OK";
+else
+        echo "Stuck mail queue detected, restarting postfix...";
+        systemctl restart amavis;
+        systemctl restart postfix;
+        mail -s "[$(hostname)] Mail server restarted due to stuck deferred messages in queue" mail@example.com <<< "There were $QUEUE messages stuck in Postfix's queue. An automatic mail server restart attempt has been done. Timestamp: $TIME";
+        postqueue -f;
+fi