ServerOK

PHP script to monitor exim mail queue

Written by Yujin Boby

Edit in WordPress

When you run exim mail server, it is good to keep an eye on number of emails in mail queue. here is a PHP script that will check number of emails in queue, if it exceed pre-set number, it will email you.

Create file

mkdir /usr/serverok/
vi /usr/serverok/mail_q_monitor.php

Add following content.

 $alertOn) {
    $hostname = exec('/bin/hostname');
    $subject = 'Mail queue alert on ' . $hostname;
    $mail_text = 'Mail queue on server ' . $hostname . ' have ' . $num_mails . ' mails';
    mail($adminEmail, $subject, $mail_text);
}

In this case, if mails in queue exceeded 100, you get email. 

$alertOn = 100;

You can change 100 to whatever number you need.

$adminEmail = "you@your-domain.com";

Replace you@your-domain.com with your email address.

Set script to run every 10 minutes using cronjob

*/10 * * * * /usr/local/bin/php /usr/serverok/mail_q_monitor.php >/dev/null 2>&1