HOWTO Setup Postfix
Install Postfix
# emerge postfix -va
Configuration
Configure Postfix; the relevant settings to be tweaked are presented:
/etc/postfix/main.cf
myhostname = zero.iat.sfu.ca naturally, use your server's real name :-) mydomain = iat.sfu.ca sender_canonical_maps = hash:/etc/postfix/sender_canonical virtual_maps = hash:/etc/postfix/virtual relayhost = gotta check on this!