On 8/24/21 11:17 AM, Andreas Barth wrote:
Well, the mail adress got disabled, and the user got warning mails ("Your subscription for list mailing list has been disabled"). As none of the list owners did that, I don't think there is any other explanation. Please note that individualsation was enabled, so all mails are sent out with per-subscriber mail envelope address, which then makes bounce detection quite straight-forward.
If by 'individualsation was enabled' you mean messages were VERPed, there could be a bug here.
There are a couple of considerations. First the vacation responder should not respond to list messages. See <https://www.rfc-editor.org/rfc/rfc5230.html#section-4.6>.
That said, bounce processing should treat even a VERPed message as unrecognized if it doesn't look like some kind of DSN. This may not be the case in MM 3.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan