On Tue, Jul 11, 2023, Grant Taylor via mailop wrote: > However, I don't see any mention of a-record fallback in RFC 5321. -- I > didn't chase any updates. -- I do see four occurances of "fall" in the
Maybe you should have looked for "MX" instead of "fall"? ... If no MX records are found, but an A RR is found, the A RR is treated as if it was associated with an implicit MX RR, with a preference of 0, pointing to that host. > As such, I'd question the veracity of current SMTP needing to support > a-record fallback. "Wer lesen kann ist klar im Vorteil." -- Please don't Cc: me, use only the list for replies, even if the mailing list software screws up the Reply-To header. _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop