9416f643_Network_Security__Description_and_exceptions
Email server Entire internet access to sesmail and SEP mail servers. [Description and exceptions] 
Everyone uses email programs on their computers to send and receive email through a server such as the central @stanford.edu servers. That kind of use is not affected by the firewall. Individuals and research groups are not permitted to run their own email servers on the Earth Sciences network. Only connections to the sesmail server (used for system administration purposes) and the SEP group's long-standing email server are allowed to come in through the firewall.
Network Security
Description and exceptions