First check to see if your server is setup to open relay http://www.checkor.com/
If your email server is not setup to open relay then check your firewall or router logs to see what internal IP address is sending out on port 25. Your firewall should be locked down to ONLY allow outbound port 25 traffic from your email server or SMTP gateway. Additionally setup your firewall (if it has the function) to send you an email alert any time an internal computer attempts to send out email on port 25. That way you know the moment a computer is compromised. Matt On Tue, Sep 30, 2008 at 10:51 AM, Holstrom, Don <[EMAIL PROTECTED]> wrote: > 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? > > > > > > > > > > ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
