RE: IMAP4 and POP relaying problems

  • From: "Rob Moore" <RMoore@xxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Mon, 10 May 2004 13:23:17 -0400

The IIS server, which is acting as an SMTP relay, appears to be
returning the error. The error message doesn't offer much info, so it's
a little hard to be certain. But I get the exact same message regardless
of where I send the message to--Yahoo or any other domain (well, of
course the error message is slightly different: the "xxx@xxxxxxxxx"
changes to "xxx@someotherdomain").

Rob 

-----Original Message-----
From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxx] 
Sent: Saturday, May 08, 2004 11:15 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: IMAP4 and POP relaying problems

http://www.ISAserver.org

Hi Rob,

What SMTP server is returning that message? The Yahoo server or your
upstream SMTP relay? 

Thanks!
Tom

Thomas W Shinder
www.isaserver.org/shinder
ISA 2004 Beta - Get it now!
http://www.microsoft.com/isaserver/beta/default.asp
ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server:
http://tinyurl.com/1llp

 


-----Original Message-----
From: Rob Moore [mailto:RMoore@xxxxxxxx]
Sent: Friday, May 07, 2004 1:37 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] IMAP4 and POP relaying problems


http://www.ISAserver.org

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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