Sean Hennessey skrev den 2022-11-28 21:57:
I'd really like a way to send X% of gmail.com traffic to one relay and the rest to another relay. Ditto for a couple of other major ESP's like Yahoo, MS, etc…
why not https://www.dnswl.org ?, its imho not hard to be there, and remember spf_helo_pass, not neaseserly just spf_pass, so atleast make sure myorigin have spf helo pass, then dkim, maybe dmarc, and if possible arc-seal, arc-sign for forwarded mails not origin sent via your mx
thats it in one line imho
