On Thu, Dec 24, 2015 at 3:11 PM, John Andersen
I egress filter email ports, and a few similar things at the firewall, but when your users are talking to big-mailers (google, yahoo, microsoft) it becomes almost impossible to keep a list of valid destinations up to date. Connection addresses end up being pools any you never know what IP the next connection is going to.
Lots of places simply don't let "workstations" make outbound connections to random SMTP servers. Verizon for one doesn't allow port 25 traffic in either direction for home users. I don't know if most companies allow random outbound POP/IMAP connections. I can imagine that a lot of companies block those too. Users are forced to use the corporate email server. Greg -- Greg Freemyer www.IntelligentAvatar.net -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org