On 11/24/25 10:25 AM, Stephen J. Turnbull wrote:

Do you have a copy of such a bounce message?  If you're getting them
consistently, you can set the forward_unrecognized_bounces_to option
in the Bounce Processing group for the list settings.


I really would like to see one of these bounce messages, however from the OP, forward_unrecognized_bounces_to won't do it as the bounce was somehow recognized as a DSN albeit with strange addresses resulting in the Bounce message for a non subscriber log messages.

I'm guessing, but I think maybe some spam was sent to the list-bounces address and it contained something matching one of the heuristic recognizers <https://gitlab.com/warsaw/flufl.bounce/-/tree/master/flufl/bounce/_detectors>.


--
Mark Sapiro <[email protected]>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan
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