On 1/6/22 12:52 PM, Stephen Daniel wrote:
Sendgrid requires that the "From:" address on any email reference an authenticated domain.
In the old mailman2 implementation, emails sent by mailman are listed as
From: <human name via LISTNAME> LISTNAME@LISTDOMAIN.org
Reply-to: <human name> sender@senderdomain.com (the original email's sender)
Sendgrid would be happy with this, because LISTDOMAIN.org is a validated domain.
However, in my mailman3 implementation, the From: header lists the original email's sender. Sendgrid rejects this because the original email's sender's address is not one of the validated domains.
How do I configure mailman3 to generate headers in the same style as the old mailman2 implementation?
In the list's Settings -> DMARC mitigations, set DMARC mitigation action to Rrplace From: with list address and DMARC Mitigate unconditionally to Yes.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan