Mark,
On Mon, Feb 1, 2021 at 12:18 AM Mark Sapiro <mark@msapiro.net> wrote:
On 1/31/21 6:42 PM, steve lund wrote:
Tom,
Good point. It has been a LONG time since I wandered into attempting to read email headers. Here is a sample header from the list that recently had the domain related bounce issue Let me know if you see anything that is mis-configured. BTW, the ISP is going to switch to the current Mailman version 3 fairly soon. I don't know if this is going to help the situation or not.
Probably not.
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From: Donald Belk via MSing-ride <msing-ride@lists.msinglinks.org> Reply-To: Donald Belk <donaldrbelk@gmail.com>
And the From: is munged by the list and the original From: added to Repty-To:
So this list is Munging From: headers, and if that was the case when the bounces occurred (maybe 3 weeks before the unsubscribes), the bounces probably weren't for DMARC reasons.
I don't believe that the ISP changed the list configuration recently. So if this is NOT a DMARC issue then any other thought as to what it could be?
Also remember that for some unexplained reason I, as the list manager, didn't receive the intervening bounce messages either. I don't know if these tripped Gmail's "throw it out" SPAM filter or something else happened.
While troubleshooting this the ISP guy subscribed one of his bogus email addresses to the list to see if I would get the bounce messages. So far I did get one of them but Gmail put it in my SPAM box. I drug the message to my Forums tab where hopefully when it happens again I will see it.
Thanks, Steve