I have multiple mail loops on our astaro mail gateway.
This is probably happening since the upgrade to 9.313-3 (Never had or seen this problem before)
Loop goes like this:
1. Incoming message to mx myastaro.com
2. message used static route to internal mta
3. The internal mta forwarded the message back to myastaro (because the user got a forwarding address.)
4. astaro recognized the message as spam. Don't no why this wasn't happening the first time.
5. Astaro sent "Message delivery incomplete' notification" back to the origin user.
6. static route from #2 was taken
7. The internal mta forwarded the message "Message delivery incomplete' notification" to the forwarder adress of the user (back to the astaro).
8. astaro recognized the message "Message delivery incomplete' notification" as spam.
9. Astaro sent "Message delivery incomplete' notification" back to the origin user.
10. static route from #2 was taken
11. The internal mta forwarded the message "Message delivery incomplete' notification" to the forwarder adress of the user (back to the astaro).
12. astaro recognized the message "Message delivery incomplete' notification" as spam.
13. Astaro sent "Message delivery incomplete' notification" back to the origin user.
14. And so on ........
This went like that for hours. One "Message delivery incomplete' notification" every sec.
I've got thousands of messages in the astaro quarantine.
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