I am running a P.O.S. Exchange Server 5.5 (up for a couple of years). Some of my people have Outlook set up for both internal and external e-mail services. Recently, all of these people lost the outgoing mail capability. They could receive but not send. I was able to use the same settings on Outlook Express and had no problem on the SMTP side of things.
Here's the error that I am getting:
From: System Administrator
Sent: Wednesday, December 12, 2007 6:07 AM
To: 'abc@defg.com'
Subject: Undeliverable: test
Your message did not reach some or all of the intended recipients.
Subject: test
Sent: 12/12/2007 5:56 AM
The following recipient(s) could not be reached:
'abc@defg.com' on 12/12/2007 6:07 AM
No transport provider was available for delivery to this recipient.
It is obvious (or is it?) that the Outlook client is trying to deliver the message through my internal mail server. I have not been able to find a configuration setting that would prevent this. By the way, I did set the Outlook client to try to deliver to an external e-mail account first.
Any ideas?
There is no problem with the internal messages (using the GAL recipients). The external incoming POP3 service is also working fine. My ISP is Comcast. If I set up a separate mail client (Outlook Express), the outbount messages go thru fine. Therefore, I know that I have my config setting OK. This also rules out the Comcast mail server. Like I said before, I made sure that the settings in Outlook (delivery tab of the services applet) had the "Recipient addresses are processed by these information services in the following order:" set to the External e-mail address first. For some reason, the internal exchange server is processing these messages. I can't tell if the program is 1st trying to send externally and them failing and trying to send internally of if it is go right to my internal exchange server.
I wish I had a beer.
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