Thank you Mark!
[EXTERNAL EMAIL]
On 9/26/23 11:29, Mohsen Masoudfar wrote:
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.
DMARC mitigations were introduced in Mailman 3.1.0. They should be available in 3.1.1. They were first exposed in Postorius 1.1.0.
Where are you looking for DMARC mitigations?
Sorry, It was my misunderstanding. DMARC mitigation is functioning well for newly created lists, even with Gmail addresses. I am suspicious that Gmail might be rejecting or bouncing emails from the list due to the reputation of those lists. It's worth noting that I am not the owner of the lists, but admin the Mailman3 infrastructure. My objective is to determine if our suspicious is accurate, whether Gmail is rejecting emails because of the bad reputation. We have asked Google, but no response so far. I am interested to know more about the reasons behind these bounces, they are all handled by Postfix and deleted.
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
This only says that some Amazon MTA has relayed a bounce to Mailman. It says nothing about why the message bounced.
Is there a way to send them to a mailbox? Or prevent them from being deleted, so that I can look into the message body?
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
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