On 9/21/23 17:30, Thomas Ward wrote:
MS365's bounce handling is weird and they do not include a delivery report in the payload, instead they take the log data and append it as a text payload portion to the message. It's annoying and problematic when debugging (and likely triggers the mailman2 equivalent of "unprocessable bounce message").
If Andrew can provide the bounce message as an example in raw form (even off list) we can dissect it - myself probably more rapidly as I am fluent in reading them at this point from weeks worth of dealing with them - and that will probably yield the info you are looking for.
It appears however that Mailman does recognize the DSN returned by MS365 as the user's delivery is being disabled by bounce. The issue is whatever DSN is returned to the list-bounces address is not attached to the notice sent to the list owner about the disable and it should be.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan