Warning: hostname server.abc.com does not resolve to address aa.bb.cc.dd

[riwalker]

made some progress, replacing the 127.0.0.1 with the real ip address:

but now error with cert?

Aug 11 21:30:31 server postfix/smtpd[2597]: connect from server.abc.com[aa.bb.cc.dd]
Aug 11 21:30:31 server postfix/smtpd[2597]: SSL_accept error from server.abc.com[aa.bb.cc.dd]: -1
Aug 11 21:30:31 server postfix/smtpd[2597]: warning: TLS library problem: error:0A000418:SSL routines::tlsv1 alert unknown ca:…/ssl/record/rec_layer_s3.c:1584:SSL alert number 48:
Aug 11 21:30:31 server postfix/smtpd[2597]: lost connection after CONNECT from server.abc.com[aa.bb.cc.dd]
Aug 11 21:30:31 server postfix/smtpd[2597]: disconnect from server.abc.com[aa.bb.cc.dd] commands=0/0

[cyberndt]

What are you using for the SSL cert?

Did you put the 127.0.0.1 localhost entry into the hosts file?

[cyberndt]

@riwalker

Aug 11 21:30:31 server postfix/smtpd[2597]: SSL_accept error from server.abc.com[aa.bb.cc.dd]: -1
Aug 11 21:30:31 server postfix/smtpd[2597]: warning: TLS library problem: error:0A000418:SSL routines::tlsv1 alert unknown ca:…/ssl/record/rec_layer_s3.c:1584:SSL alert number 48:

This error indicates that what ever device you are using to log into the server with, is not accepting your server SSL Cert. because it’s from an unknown CA.

This happens when you are using a selfsigned cert.

If you are able to make connection and send and receive email? it should not be a problem.

[riwalker]

I think i got it working
i deleted the SSL for server.abc.com virtual server
and added a new SSL in the main abc.com for server.abc.com in addition to www, mail, etc
and added it as the main SSl for services also:

[riwalker]

after a reboot, all seems to work, so positing here the final config:

Networking → Networking Configuration → Hostname and DNS Client
(no idea why is has 127.0.0.53 still ?)

Host Addresses:

and the SSL as prior post.
Note, no BIND or ‘DNS Domain’ loaded for ANY virtual server (Features and Plugins)