Activate the watchdog for your fetchmail daemon

It is important to be sure that the mail retrieval daemon is always UP you can enable the watchdog to watch the service status in real-time.

On the "Daemon settings" tab, enable the "Enable Watchdog" checkbox.
You can be notified if the CPU use percentage of the daemon exceed a value in "Notify When CPU exceed" field.
You can be notified if the memory use percentage of the damon exceed a value in "Notify When memory exceed" field.

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Patch for version before 1.6.051813 : fetchmail-watchdog-patch.tar.gz
(Extract it under /usr/share/artica-postfix)