Strange Sending Problem On Exchange 2000

[Steevy]

We are running Exchange 2000. We have 3 sites, each with a server and exchange running on one that they all connect to. We use SMTP to send mail. Two of the sites can send external mail with no problems. All of the sites can send and recieve internal mail. All of the sites can recieve external mal. One site cant send external mail, but the server at that site can. There are no undeliverable messages or anything, the maill just seems to dissapear. I can't work out what the problem is. Does anyone have any ideas?

Thank you.
Steev.

 

[ACraib]

I'd start by enabling Logging on each of the servers. Right click on the servers in ESM and select Properties ... or you can use a system policy to set it on all three servers at the same time.

Once logging is enbaled send some test messages around and then use the Message Tracking Centre in ESM to see where the messages are going.

Hope this helps a bit.

 

[jbud]

Have you created routing groups or SMTP connectors?

If you're using the default SMTP install, do you see a queue for the remote domain get created on the exchange server in question? Is there anything in the event log?

When you say that the seperate server can send e-mail, is that via the Exchange server or some other SMTP process?

ACraib is right - message logging would be a quick way to find out.

With no NDR, you may have a mail loop in place.