On Fri, 1 Dec 2023, John Levine via Exim-users wrote:
It appears that Viktor Dukhovni via Exim-users said:
That text is obsolete. There is no such text in RFC5321, and
CNAME-valued mail domains have long been OK. The sending MTA (its DNS
resolver) is expected to restart the MX lookup at the
On 12/1/23 16:50, John Levine via Exim-users wrote:
Just wondering, I'm pretty sure I sent mail to this list in the past.
Is the CNAME new?
It probably appeared when some systems were reshuffled, earlier this year.
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Cheers,
Jeremy
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It appears that Viktor Dukhovni via Exim-users said:
>That text is obsolete. There is no such text in RFC5321, and
>CNAME-valued mail domains have long been OK. The sending MTA (its DNS
>resolver) is expected to restart the MX lookup at the target of the
>CNAME, and if no MX records are found, u
