How to remove an Exchange server in ESM that’s no longer on the network

I’m a junior sysadmin at a relativly small company. We use Active directory and Exchange 2003 with just a single Exchange server.

The former SA (before he got fired) had 2 exchange servers (Exchange1 and Exchange2)running, then he decided to decomission Exchange1 and physically removed the server. However he did not remove the server through ESM so an entry for it still exists, this tends to cause some minor irritations such as Active directory defaulting to creating new mailboxes on a server that doesn’t actually exist. Is there a way for us to remove the server in ESM without hooking up a test server with the old server name to make ESM think it’s back on the network?

Any help would be appreciated