Jabber is an open source instant messaging protocol similar to AIM, MSN Messenger, Yahoo Messenger and ICQ. We are running the official Jabber server version 2. A list of all the different clients that support the Jabber protocol is available at http://www.jabber.org/software/clients.php.
Basic Info for Configuration
User name: Your XMission username
Password: your XMission password
Resource: some clients allow you to set this; it allows people to differentiate between if you are logging in from work/school/home.
Ports: ' 5222 (plain/TLS for newer clients) / 5223 (SSL for older clients).
Just send a message to email@example.com using whatever Jabber compatible client you are using. You can also message someone using another Jabber server simply by messaging firstname.lastname@example.org.