I have now elimiated reverse.rrr.com. But there isn't much change:
vvvvvvvvvvvvvvvvvvvvvvvvv Jun 11 22:19:57 arvak postfix/relay/smtp[1015580]: initializing the client-side TLS engine Jun 11 22:19:57 arvak postfix/smtpd[1015581]: initializing the server-side TLS engine Jun 11 22:19:57 arvak postfix/smtpd[1015581]: connect from host.xxx.com[m.y.i.p] Jun 11 22:19:57 arvak postfix/relay/smtp[1015580]: warning: host host.xxx.com[m.y.i.p]:25 greeted me with my own hostname host.xxx.com Jun 11 22:19:57 arvak postfix/relay/smtp[1015580]: warning: host host.xxx.com[m.y.i.p]:25 replied to HELO/EHLO with my own hostname host.xxx.com Jun 11 22:19:57 arvak postfix/relay/smtp[1015580]: 29FCF5F867: to=<mylists@lists.yyy.com>, relay=host.xxx.com[m.y.i.p]:25, delay=0.2, delays=0.06/0.01/0.13/0, dsn=5.4.6, status=bounced (mail for lists.yyy.com loops back to myself) Jun 11 22:19:57 arvak postfix/smtpd[1015581]: disconnect from host.xxx.com[m.y.i.p] ehlo=1 quit=1 commands=2 ^^^^^^^^^^^^^^^^^^^^^^^^^^
Is there anything else I can do to find the error?
Thank you. Florian.