Re: [exim] smarthost Outsmarting me so Far

Dňa 11. mája 2022 13:34:47 UTC používateľ Martin McCormick via Exim-users <exim-users@???> napísal:

>Connecting to smtp.mx-altice.prod.cloud.synchronoss.net [208.180.40.68]:587 ... connected
> SMTP<< 220 omta02.suddenlink.net ESMTP server (InterMail vM.8.04.03.22.02 201-2389-100-169-20190213) ready Wed, 11 May 2022 07:24:45 -0500

It seems, as you are connecting to CNAME, which points to smtp.suddenlink.net. For now
i am not sure, which name will be took to search in passwd.client, try to use name which
you setup for smarthost (the lookup uses $host variable).

You can try to setup smtp.suddenlink.net as smarthost name or vive versa, use
smtp.mx-altice.prod.cloud.synchronoss.net (or wildcard of some level) in passwd.client.
It seems, that you mix these two, but i can be wrong, as it is many years ago, when i used
remote smarthost.

BTW, i test both ports (465 & 587) on that address with openssl s_client, and both works
for me, while 465 hangs for first time after inital TLS handshake, but it was sucess at
repeat. IMO you can do packet capture (to demonstrate that it doesn't wočk for you) and
post it to suddenlink.net for investigation.

regards
Slavko