My system was just under a spam attack. When I looked at one of the 7000 inbound emails, I noticed it was mailed to all of my users. Even ones that are no longer active and haven't been on in years. (they no longer work here) How did someone get this userids? We are behind a netopia router which seemd to be secure and all ip address are in the 192.168.n.n range. I can't find any malicious things going on. Have I been compromised?