Good Day Everyone,
I am a net admin in a W2K networked environment with approximately 50-60 users. We utilize exchange 5.5 for email and SC EF 4.7 for anti-spam and extra security. However, I have found several messages saying that I have sent an infected message to someone, and also, NDR's from my own mailbox, saying that I sent a message to someone and the delivery failed, and I know I did not send it. We have a firewall in place, however, my question is, someone getting past my firewall and into my exchange server. Are there any vulnerabilities in SC EF that any of you know about or could it point to some other configuration problem on my server. I am stumped as to why this is happening and I would like to secure this production email server ASAP. Any help would be greatly appreciated.