Monitor the traffic as it is leaving your firewall. If you see smtp traffic that doesn't belong to you then track down the originating ip from the log and see what is up that way?
________________________________ From: Holstrom, Don [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 30, 2008 10:52 AM To: NT System Admin Issues Subject: blacklisted PSBL says they have received spamtrap mail from our IP address. How do I check all my PCs to see which ones are responsible? I have anti-virus on all workstations and servers, anti-spam on the e-mail server, and anti-spyware on the workstations. All is updated regularly. What else do I need to do? Any places anyone can point me? ______________________________________________________ This e-mail and any files transmitted with it are property of Indiana Members Credit Union, are confidential, and are intended solely for the use of the individual or entity to whom this e-mail is addressed. If you are not one of the named recipient(s) or otherwise have reason to believe that you have received this message in error, please notify the sender and delete this message immediately from your computer. Any other use, retention, dissemination, forwarding, printing, or copying of this email is strictly prohibited. This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ This e-mail and any files transmitted with it are property of Indiana Members Credit Union, are confidential, and are intended solely for the use of the individual or entity to whom this e-mail is addressed. If you are not one of the named recipient(s) or otherwise have reason to believe that you have received this message in error, please notify the sender and delete this message immediately from your computer. Any other use, retention, dissemination, forwarding, printing, or copying of this email is strictly prohibited. ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
