I'm seeing if this comes through after removing the reference to their mail server.
-Paul -----Original Message----- From: Maglinger, Paul Sent: Friday, June 21, 2013 8:21 AM To: New Exchange List ([email protected]) Subject: Email relayed through SCO server refused by external email servers Apologies if this is a re-post, but I didn't see this come back to me and I didn't see any replies, although it was in my Sent Items folder. There are a group of Outlook 2003 clients that connect using POP to SCO servers that use sendmail. The externally bound email is relayed through the SCO servers to an Exchange 2003 server, which then passes it off to the spam filter and out. If I telnet from any one of the SCO servers to the Exchange 2003 the email will pass on to gmail, juno, etcetera without problem. If I send a test email from the Outlook 2003 client it will work on one of the SCO servers but not the other 2. From the other two I get a connection refused from their mail server. My first thought was the SPF record, but I tried the various online SPF tools and they tell me it's fine. This makes me think that there's something going on when it passes through the SCO box. I have checked the sendmail.cf files on each server and the only differences I see are what I'd expect in as far as the names of the servers. Anyone out there have experience with mail on SCO, specifically sendmail, that could share a thought on how to troubleshoot? -Paul
