[Mailman-Users] List posts sent to AOL list subscribers bounce as undeliverable (v. 2.1.20)
johnl at taugh.com
Fri Dec 4 16:40:15 EST 2015
>The issue is that list posts sent to AOL subscriber addresses are now bouncing as undeliverable with the bounce code: "521
>5.2.1 : AOL will not accept delivery of this message."
I see that you have a yahoo.com address. If there's a yahoo.com
address on the From: line of the list mail, AOL and Yahoo's well
documented abuse of DMARC will cause the failure you're seeing.
If you're running a recent version of Mailman, there are some DMARC
workarounds you can use. Other than that, I'd find a different
address to mail from, not at Yahoo, not at AOL, and preferably not at
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