Hello SmarterMail community and team,
recently we noticed, that some of the spool settings are not doing what I think they should. Concretely the settings for
- Bounce DNS errors after = 3
- Notify senders of delay after = 2
are not doing what they should. Mails to gmail.fr, where no MX records are defined, are not aborting after 3 attempts. Also the sender is not getting a delivery delay notification.
When all retry intervals
Retry Intervals = 5, 5, 15, 30, 30, 30, 30, 60, 90, 120, 240, 480, 960, 1440, 2880
ran through, the delivery failure message is sending proper.
Our mailserver is a cluster setup, with three mailout server. Each of them behaving like described above. We are using the version 15.6.6347.
On our test server with version 15.4.6151 I tried to reproduce the behavior. But the result is different: The delivery delay notification was send, but also mail to gmail.fr wasn't bounced after 3 attempts.
This are the settings on the test server:
Bounce DNS errors after = 3
Notify senders of delay after = 2
Retry Intervals = 5, 5, 10, 15, 30, 60, 90
So my question is: What could be the reason, that the mail to gmail.fr does not bounce earlier and why is no delivery delay notification being send?
Thanks and kind regards,