I'm having a problem with spam going out with the address email@example.com Not sure why I haven't found the infected computer, but wondering how to disable outbound email from postmaster until I get the virus issue resolved. About a month ago, I did run the test to check if we were a relay, and we are not. So it must be internal. Attached is the info I received from our ISP. We have server 2003 SP2 and exchange 2003 SP2. Any help would be great. Exchange is a weak point for me, but if you need any other info, I'm sure I can get it for you.