Thank you for the insight. It helped solving the issue.
Un cordial saludo, Wolfgang Rauchholz +34 627 994 977 https://www.linkedin.com/in/wolfgangrauchholz/ On Tue, Feb 7, 2023 at 6:51 PM Wietse Venema <wie...@porcupine.org> wrote: > 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 >
