Thanks for the insight. The warning "greeted me with my own hostname" appears in the log file when delivery of the bounce is attempted. Sounds like a bad assumption on my part: I assumed since it was labeled a warning it wasn't fatal but a notification.
Both SMTP servers do have the same hostname. This was intentional since incoming (via Kerio) and outgoing (via Postfix) are on the same IP and my goal was for the hostname to match forward and reverse DNS. Is there no workaround? Or is my configuration flawed and to be avoided? On Dec 6, 2011, at 2:31 PM, Wietse Venema wrote: > Rick Hazey: >> My problem occurs when Postfix can't deliver an email, might be a >> non-existent email address for example. Postfix generates a bounce >> message for the sender but won't deliver it and complains that it >> "loops back on myself". > > You have the same myhostname on multiple servers (Postfix logs > "host xxx greeted me with my own hostname), or you have the > MX record pointing to a host that is not the final destination. > > grep the logfile for the PID of the SMTP client and show all > the records. > > Wietse