Yannick a écrit : > I tnink you're talking about the "local_recipient_maps =" setting but if I > do not use it, I get a " Recipient address rejected: User unknown in local > recipient table" and the mail is not forwarded. > > And, with this setting (just empty), user localy existing (in the > /etc/password) are receiving their mail on the new server (on the frontend) > > I understand your raction but it works !
now test by sending mail to a user that doesn't exists (nor locally nor on the "internal" server). chances are this will generate a bounce message. if so, then you are a source of backscatter and you may be blacklisted. search the web for "backscatter" and you'll see why it's bad.
