On 18.10.23, 22:11 Markus Ueberall wrote via Postfix-users:
I just tried an explicit "_25._tcp" CNAME as suggested above (using
the shared RRset) /alongside/ the existing "*._tcp" CNAME which I did
not want to remove/replace for one domain ("D1") while keeping my
aforementioned setup for a second domain ("D2"). Then I waited for a
couple of hours to be sure that all outdated cache entries are gone
(TTL for all entries is 3600 seconds), and sent another test e-mail
each to both domains (one immediately after the other). Lo and behold:
The one addressed to D2 got delivered, the one addressed to D1 still
causes the logs to be filled with the same dreaded STARTTLS,QUIT
pattern at the time of writing.
This means that it's either not only the required lookup of a wildcard
CNAME that causes problems or the simple fact that there is a wildcard
CNAME although it should be ignored in this case.
Sorry, scratch the second part of the last sentence after "or the simple
fact"; "D2" also still has said wildcard CNAME.
KR, Markus
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