I'm dealing with the same issue. Upon reviewing the logs, I've noticed a significant number of bounced emails for a particular mailing list. Gmail users have reported not receiving emails. I haven't been able to locate the "munge from" information. My current setup is using Mailman 3.1.1. I read it has been introduced in 3.2.
The Question is what to do with Mailman 3.1.1, if the upgrade is not an option.
I get in the logs messages like below with several Queue-ids:
Sep 25 09:03:55 localhost postfix/smtpd[26692]: 147583E927: client=a14-93.smtp-out.amazonses.com[54.240.14.93] Sep 25 09:03:55 localhost postfix/cleanup[26696]: 147583E927: message-id=<0100018acb94b326-fdf39193-144e-4fdc-8faf-0d3df54eb4ee-000000@email.amazonses.com> Sep 25 09:03:55 localhost postfix/qmgr[1298]: 147583E927: from=<>, size=24934, nrcpt=1 (queue active) Sep 25 09:03:55 localhost postfix/lmtp[26697]: 147583E927: to=<listname-bounces@servername>, relay=127.0.0.1[127.0.0.1]:8024, delay=0.03, delays=0.01/0/0/0.01, dsn=2.0.0, status=sent (250 Ok) Sep 25 09:03:55 localhost postfix/qmgr[1298]: 147583E927: removed
Mohsen
From: Andrew Hodgson <andrew@hodgson.io> Sent: Friday, September 22, 2023 7:47 AM To: Andrew Hodgson <andrew@hodgson.io>; Mark Sapiro <mark@msapiro.net>; mailman-users@mailman3.org <mailman-users@mailman3.org> Subject: [MM3-users] Re: Is there a way of recording bounce messages?
[EXTERNAL EMAIL]
Hi.
Seems other people have had this on Office365 when I searched the specific error. I have enabled VERP now on probes and all list messages so lets see if that improves things. Thanks. Andrew.
-----Original Message----- From: Andrew Hodgson <andrew@hodgson.io> Sent: Friday, September 22, 2023 12:22 PM To: Mark Sapiro <mark@msapiro.net>; mailman-users@mailman3.org Subject: [MM3-users] Re: Is there a way of recording bounce messages?
Mark Sapiro <mark@msapiro.net> wrote:
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.
Ok guys the plot thickens.
Yesterday using the Mailman Shell I unbounced all the users on that list. We had a couple of messages yesterday and I also enabled the From munging for all messages sent to the list partway through those messages coming to the list. This morning we got all Gmail users bounced again, with no NDR attached to the message.
However on one of the messages the NDR was attached, and so I'm going to send that to Mark separately. It looks like the NDR included the information for all the bouncing messages though, and that is probably because Mailman sends the messages to all users in one SMTP transaction.
The message returned from Google was:
user@gmail.com 9/22/2023 9:44:55 AM - Server at PAVPR08MB9257.eurprd08.prod.outlook.com returned '550 5.4.300 Message expired -> 421 4.4.2 Connection dropped due to SocketError' 9/22/2023 9:24:03 AM - Server at gmail-smtp-in.l.google.com (142.250.27.27) returned '421 4.4.2 Connection dropped due to SocketError'
Thanks. Andrew.
Mailman-users mailing list -- mailman-users@mailman3.org To unsubscribe send an email to mailman-users-leave@mailman3.org https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.mailman3.org%2Fmailman3%2Flists%2Fmailman-users.mailman3.org%2F&data=05%7C01%7Cmmasoudf%40aaas.org%7C72978c0056334ea941d208dbbb61be39%7C2eebd8ff9ed140f0a15638e5dfb3bc56%7C0%7C0%7C638309800710118735%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=EMFfZlJuqOTlpvMJVJs2JHKP9pzrvfwbvX7TrB6HK%2BI%3D&reserved=0<https://lists.mailman3.org/mailman3/lists/mailman-users.mailman3.org/> Archived at: https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.mailman3.org%2Farchives%2Flist%2Fmailman-users%40mailman3.org%2Fmessage%2F2XTG3AUZ7NOKVG56JLXAF4SOJR2MGJCB%2F&data=05%7C01%7Cmmasoudf%40aaas.org%7C72978c0056334ea941d208dbbb61be39%7C2eebd8ff9ed140f0a15638e5dfb3bc56%7C0%7C0%7C638309800710118735%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=1DJl%2BB%2FEgpdMw1l%2BZzFmgzwtTAW8vC2Esk22dlVLv0k%3D&reserved=0<https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/message/2XTG3AUZ7NOKVG56JLXAF4SOJR2MGJCB/>
This message sent to andrew@hodgson.io
Mailman-users mailing list -- mailman-users@mailman3.org To unsubscribe send an email to mailman-users-leave@mailman3.org https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.mailman3.org%2Fmailman3%2Flists%2Fmailman-users.mailman3.org%2F&data=05%7C01%7Cmmasoudf%40aaas.org%7C72978c0056334ea941d208dbbb61be39%7C2eebd8ff9ed140f0a15638e5dfb3bc56%7C0%7C0%7C638309800710118735%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=EMFfZlJuqOTlpvMJVJs2JHKP9pzrvfwbvX7TrB6HK%2BI%3D&reserved=0<https://lists.mailman3.org/mailman3/lists/mailman-users.mailman3.org/> Archived at: https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.mailman3.org%2Farchives%2Flist%2Fmailman-users%40mailman3.org%2Fmessage%2FAKSBXKVM35PUL7EML6NOU53UZIQG3JIF%2F&data=05%7C01%7Cmmasoudf%40aaas.org%7C72978c0056334ea941d208dbbb61be39%7C2eebd8ff9ed140f0a15638e5dfb3bc56%7C0%7C0%7C638309800710118735%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=2K6zWtoe4GNkV%2BBz8Cx9kF58jSDmGS8jOmS3w8i7XGo%3D&reserved=0<https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/message/AKSBXKVM35PUL7EML6NOU53UZIQG3JIF/>
This message sent to mmasoudf@aaas.org