RE: Bounce replies are not coming back through relay

2010-04-03 Thread Masao Garcia
Wietse, Okay, I think I know what the problem is. Our reply-to addresses are for a domain that's not handled (yet) by our mail servers. We are in the middle of a transition to bringing our e-mail in-house away from an external pop/imap provider but during the transition we'd still like to keep t

RE: Bounce replies are not coming back through relay

2010-04-03 Thread Masao Garcia
Wietse, Maybe I should re-phrase my question. On my Exchange server, if I e-mail an invalid address, it will e-mail be back and tell me that the recipient does not exist. When I e-mail an invalid address using a web/imap/pop hosting provider, I get an e-mail telling me the recipient is not valid

Bounce replies are not coming back through relay

2010-04-02 Thread Masao Garcia
Hello, I have set up an Ubuntu 8.04 postfix relay that relays mail to and from my Exchange server. Everything seems to work well enough except that our users do not receive bounce replies when they send mail to an invalid address outside our domain. If I tail /var/log/mail.log, I can see the