IMAP4 and POP relaying problems

  • From: "Rob Moore" <RMoore@xxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Fri, 7 May 2004 14:37:12 -0400

Hello--

My Exchange admin and I are trying to get mail flowing to and from our
test Exchange domain. I can access the test Exchange box from OWA and I
can send and receive SMTP mail with it.

I have ISA on a box by itself, in integrated mode. The message screener
is installed on the ISA box, which is in my real domain. Exchange is on
a separate box in a separate test domain.

When we connect to the test Exchange server via POP or IMAP and try to
send email off-site (that is, off the test domain), we get the following
error: 550 5.7.1 Unable to relay for xxx@xxxxxxxxx (where 'xxx' is an
address at Yahoo we're trying to send to). We're doing this from inside
the network, using a machine on the test domain. If we use IMAP or POP
(from the same machine) to send to another user on the test domain, it
works no problem.

I'll keep looking for what might be going on here, but meanwhile if
anyone has any hints, they would be much appreciated.

Thanks!

Rob
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Rob Moore, MCSE
Network Manager
American Friends Service Committee
215-241-7870
rmoore@xxxxxxxx

Our greatest glory is not in never failing but in rising every time we
fall.
                       --Confucius



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