I am trying to figure out how to set up qmail on a firewall that will
close an open relay. I have qmail on an internal machine which actually
serves the mail to the users (via POP3).
All of our internal mail clients use the internal box as their
SMTP server.
I have tried to set up rcpthosts on the firewall, but that rejects
outgoing mail being forwarded from the internal qmail box. I have also
considered using SMTP to go one direction and QMQP to go the other, but
I don't believe that will work since qmail-queue gets symlinked to
qmail-qmqpc on the client end and that would prevent the SMTP from
working.
I'm certain this has been done before. I have seached the archives and
the documentation and have not found anything. Any help would be
greatly appreciated.
Thanks,
Eric
