hi, there are issues with TLS when I do copy to Dovecot and Postfix for the SSL certificate (signed by CA certificate). Webmin 1.720 + Virtualmin 4.12
Dec 6 10:31:08 myhostname postfix/smtpd: warning: TLS library problem: 22997:error:14094419:SSL routines:SSL3_READ_BYTES:tlsv1 alert access denied:s3_pkt.c:1257:SSL alert number 49:
Postfix didn't start because of the master.lock
...fatal: open lock file /var/lib/postfix/master.lock: unable to set exclusive lock: Resource temporarily unavailable
and also "fatal: bind 0.0.0.0 port 25: Address already in use"
I had to delete the /var/lib/postfix/master.lock, restore the self-signed certificate and reboot the server...
so it's not easy at all and you should understand why it happens...
- googled for alert 49
"49 access_denied | Received a valid certificate, but when access control was applied, the sender did not proceed with negotiation. This message is always fatal."
maybe I have to reboot the server after the SSL certificate copy to Dovecot, Postfix? ...and so those TLS errors were caused by a NOT running Postfix?
After the copy, I tried to add a new email account in Thunderbird and even if the password for the user was correct, it reported that it was not...so I suspect that it was because of the stopped Postfix, but in that moment I didn't know that Postfix was not working...
and, above all, WHY Postfix was not running after the copy?
Can you test yourself this procedure again, please?