On 2025-10-13 22:09:18 -0000 (-0000), Wikinaut wrote:
The recipient address abc-given.name@online.de (member of list mylist@myserver.de) has currently an out of office responder and mails are returning to my mailman3 system as unrecognized bounce messages.
I suspect the "-" in his address to be in conflict with the bounce address hyphen:
<mylist-bounces+abc-given.name=online.de@myserver.de>
Can any of you experts try on their systems, whether this a bug of mailman3 due to the "-" in the address? [...]
My recollection is that there's a bunch of lists of known bounce message content patterns in the flufl.bounce library that the message body is matched against, and if the wording of the bounce message isn't a recognized one then the bounce is considered unidentified in order to not count against the subscriber's bounce score. See https://gitlab.com/warsaw/flufl.bounce for details.
-- Jeremy Stanley