Mail server SSL Certificate TLS?

It’s been a while since I has a mail server running as my server hasn’t really done any proper web hosting for a while.

Want to setup the mail server again I have lets encrypt working on a site and its subdserver 2 certificates.

Cant receive email as I get thgis error:

The response from the remote server was:
454 4.7.0 TLS not available due to local problem

Transcript of session follows.

Out: 220 220-244-244-115.static.tpgi.com.au ESMTP Postfix (Debian/GNU)
In: EHLO mail-qt1-f170.google.com
Out: 250-220-244-244-115.static.tpgi.com.au
Out: 250-PIPELINING
Out: 250-SIZE 10240000
Out: 250-VRFY
Out: 250-ETRN
Out: 250-STARTTLS
Out: 250-AUTH PLAIN LOGIN
Out: 250-AUTH=PLAIN LOGIN
Out: 250-ENHANCEDSTATUSCODES
Out: 250-8BITMIME
Out: 250-DSN
Out: 250-SMTPUTF8
Out: 250 CHUNKING
In: STARTTLS
Out: 454 4.7.0 TLS not available due to local problem

Session aborted, reason: lost connection

For other details, see the local mail logfile

Feb 7 10:27:55 server-web-bullseye postfix/smtpd[712079]: warning: No server certs available. TLS won’t be enabled

Not too sure how to fix this, postfix and the install is mostly defaults apart from a couple servers I installed a main and a sub server.

Check the Check SSL Certs if you can enable ssl for Postfix. Only thing I can think.

Last week has been a little stressful and hectic so sorry for the delayed reply.
Including a bunch of screenshots nothing in these tyhat a google wouldn’t show.
I am sure I am missing something.
Last screenshot I had tried TLS both enabled if reqested (default setting) and disabled.
I have a few virtual servers internal and external with this as my main external.