on 1/1/09 9:30 AM, John Wesley Simpson Hibbs said:
Our mailing lists had been processing bounces correctly for quite some time.
For some reason though, this has stopped functioning properly.
Bounces were coming back to list-bounces+XXXX, and are now coming back to list-bounces, without the XXXX.
The setting "Should Mailman perform automatic bounce processing?" is set to yes.
Do you run your own MTA to transmit your messages, or is that service provided by someone else. This smells to me like someone somewhere made some changes on the MTA to strip VERP-style "plus" addressing, and that may have borked your mailing lists.
If you run your own mail server, check to see if there have been any recent changes made on the MTA. Check the logs of the MTA from both before the change and after the change, to see what the effect is.
If you don't run your own mail server, you'll need to contact the people that do to get them to do this analysis for you.
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