Ars Technica

Phantom SMTP and POP ports

Anyone else here use FScan?? It's a great command line port scanner produced by FoundStone.<BR><BR>Whenever I use it from my Cox@Home account and scan off of the Cox network I get phantom SMTP and POP ...
Ars Technica

SMTP Open Relay on a custom port for your staff?

We have people that travel and I've been annoyed a lot with some hotels using ISPs that block SMTP port 25 traffic. The solution is having to talk the users through changing the default SMTP server ...
ZDNet

Fix SMTP and leave port 25 alone for the sake of spam

Larry Seltzer of eWeek, whom I have great respect for and usually agree with, wrote this article on dealing with spam using the controversial tactic of blocking all outbound port 25 access.? The logic ...
Computer Weekly

Network configuration: IIS SMTP mail relay service and Microsoft Exchange Server

This list is a companion piece to the Secure Web server installation portion of SearchSecurity.com's Intrusion Defense School lesson on Web attack prevention and defense. Check out the companion ...