What is Postfix?
Postfix is an open source mail transfer agent (MTA) that routes and delivers electronic mail.
It was released under an IBM Public License 1.0 and was later distributed under and Eclipse Public License 2.0.
Postfix monitoring
This package monitors Postfix by reporting Postfix queue indicators.
This package will be sent Postfix statistics with scripts on the Linux machine.
For each of the active, hold, incoming, maildrop, and deferred queues (http://www.postfix.org/QSHAPE_README.html#queues), the statistics are gathered in this way:
- Queue length: Number of items in the queue
- Size: Size in bytes of all the items in the queue
- Age: Age in seconds of the oldest item in the queue
