Un semplice script bash che controlla la coda di postix e ci avverte se supera un determinato limite :

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#!/bin/bash
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limit=50;
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notifyemail=luigi.molinaro@gmail.com;
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servername=$(hostname);
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queue_p=$(postqueue -p | grep Request | awk '{print $5}');
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if [ $queue_p -ge $limit ] ; then
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        echo "
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Dear Server admin,
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We have $limit in local mailqueue.
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" | mail -s "Mailqueue limit exceeding - $servername" $notifyemail
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fi
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