The company I work for started to upgrade from Exchange 5.5 to Exchange Server 2003. I was not part of the upgrade process and the person who started the process is no longer employed here. I'm an Exchange novice and I have been trying to address a few problems that have come up recently. One of them is Event ID: 3018. I'm not sure if it has something to do with open relay.
In the Event ID 3018 message it mentions using nslookup to troubleshoot the problem. I'm not clear on how to use nslookup to troubleshoot the problem and MS kbid 200525 on using nslookup isn't very clear to me. Could someone shed a little light on using nslookup to troubleshoot my problem?