On 2023-07-11 at 04:05:42 UTC-0400 (Tue, 11 Jul 2023 09:05:42 +0100) Laura Atkins via mailop <la...@wordtothewise.com> is rumored to have said:
B2B email requires a MX (like, if you don’t have an MX do you even email?)
Surprisingly, A-record fallback works just fine for B2B email. No one notices. Or at least no one appears to reject mail solely for that reason and inbound mail works perfectly. It is, after all, the way email was originally designed to work.
However, I admit my evidence for that is ~2y old. I wouldn't *intentionally* allow an actively mailing domain to rely on A fallback...
-- Bill Cole b...@scconsult.com or billc...@apache.org (AKA @grumpybozo and many *@billmail.scconsult.com addresses) Not Currently Available For Hire _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
