[Using MM 2.1.39 hosted at dreamhost.com] Starting Dec 27, the Mailman list I admin started getting bounces to Gmail accounts, but only for digest messages - the individual messages have been going through without (apparent) problem. Sample bounce error:
<[email protected]>: host gmail-smtp-in.l.google.com[192.178.163.27] said: 550-5.7.1 [69.163.136.29 12] Gmail has detected that this message is likely 550-5.7.1 unsolicited mail. To reduce the amount of spam sent to Gmail, this 550-5.7.1 message has been blocked. For more information, go to 550 5.7.1 https://support.google.com/mail/?p=UnsolicitedMessageError 41be03b00d2f7-c1e7d1d12a2si62798268a12.385 - gsmtp (in reply to end of DATA command) Has anyone else experienced this? The list has been around for ~10 years and this just started happening a week ago. It is very large - 7200 total members; over half are Gmail accounts. Trying to get help from Dreamhost has been extremely frustrating - I get a response from a new tech each time who can’t be bothered to read the case history and says, Oh this is a spam problem, so we can’t help 🙄 Going into the Google postmaster tools, I see they say DKIM is failing for the domain at issue. When I run a DKIM checker<https://mxtoolbox.com/SuperTool.aspx> on the domain, everything is fine. Looking in a digest email header, there are no DKIM-Signature: headers, but there are ARC-Seal: and ARC-Message-Signature: headers. (Is this expected or is this a bug?) This page<https://www.suped.com/guides/dkim/a-practical-guide-to-dkim-selector-name-examples> says to look at the s= value in the DKIM-Signature: header for what the proper DKIM selector should be for my domain, in an email sent from the domain. Should I be checking the s= value in the ARC-Message-Signature: header of a digest email to confirm a valid DKIM selector? Something else? -Brie ------------------------------------------------------ Mailman-Users mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/mailman-users.python.org/ Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: https://www.mail-archive.com/[email protected]/ https://mail.python.org/archives/list/[email protected]/ Member address: [email protected]
