Wolfgang Paul Rauchholz:
> Hello I run postfix (postfix-3.5.8-4.el8.x86_64) on my Rocky Linux 8.7 home
> server
> I setup postfix and dovecot as a firs step and it seems to be working;
> meaning I can send and receive mails (I send/returned mail from a gmail
> account).
> But I find these error messages in /var/log/maillog and after researching
> and making changes cannot fix them.
> I searched on the web and there are many different cases discussed, but...
>
> Feb 5 03:50:12 home postfix/smtps/smtpd[402300]: SSL_accept error from
> unknown[10.5.2.1]: lost connection
> Feb 5 03:50:12 home postfix/smtps/smtpd[402300]: lost connection after
> CONNECT from unknown[10.5.2.1]
> Feb 5 03:50:12 home postfix/smtps/smtpd[402300]: disconnect from
> unknown[10.5.2.1] commands=0/0
This could be a TLS wrappermode mismatch.
Port 587 (submission) should not use TLS wrappermode.
Port 465 (smtps) should use TLS wrappermode.
Port 25 (smtp) should not use TLS wrappermode.
Either the client or the server got this wrong.
Wietse
