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. I'm under
> the assumption that my Postfix server is not allowing a bounce to come back,
> but I do not know if it's a configuration issue or if it's just the way
> things work. I've been told by someone knowledgeable with e-mail servers
> that it should be possible to get a reply back saying the recipient is
> invalid so I'm thinking it's a configuration issue. Are you telling me it's
> just not possible?
Instead of speculating that "Postfix does not allow bounces to come
back", all the evidence you need is in the logfile. Postfix logs
ALL mail delivery attempts, including the attempts that fail.
First, does Postfix actually RECEIVE the mail from the user? If it
doesn't receive the mail, then obviously it also cannot deliver it.
Does the remote server say that the recipient is bad WHILE Postfix
delivers mail? Then, Postfix should SEND a bounce message to the
sender, and if it does not, you need to provide the evidence.
Does the remote server find out that the recipient is bad AFTER
Postfix delivers mail? Then, Postfix should RECIEVE a bounce message
from the remote server, and if it does not, then you need to talk
to the operator of the remote server.
Wietse
