How to stop a spammer relaying fraud emails off of our server
Posted on 2008-10-19
Guys, I am not sure where to start. Got a call from an ISP the other day that my customers email exchange server was relaying fraudalent emails, sounded threatening on the phone.
Open relay is not enabled on the server, so I believe we either have some kind of virus or an account has been compromised.
How can I see which account is sending emails out? Also, I have another big problem, the AV software on this system is NAV corporate, I hear that scanning Exchange servers is a dangerous thing withouth the proper AV, is this true?
thank you guys.