Ahoj,
Dňa Sun, 26 Jun 2022 10:41:47 -0400 Viktor Dukhovni via Exim-users
<exim-users@???> napísal:
> On Sun, Jun 26, 2022 at 04:30:14PM +0200, Slavko via Exim-users wrote:
>
> > Not MAY, they SHOULD (if they support it), the 587 is as fallback
> > for old clients only, the 25/tcp is deprecated for MUAs for
> > years...
>
> Read carefully, the question (as stated) was about SMTP relay client
> *MTAs*, not client submission MUAs.
The OP clearly linked RFC8319 (which you removed from citation),
which is about MUA connections and IMO applies to MTA acting as MUA
too.
regards
--
Slavko
https://www.slavino.sk