On Tue, 2004-08-31 at 11:23, mike@xxxxxxxxxxx wrote: > I do have the ability to put my server in a friend's server room but how > do I ensure that only "my" computers have the ability use the SMTP Postfix > server to send mail? I mean, the server has to be able to receive > legitimate SMTP mail, but I don't want anyone else to be able to relay > from my server. You have two choices; Pop Before SMTP or configure Postfix with SASL Authd (my choice). This MAY already be compiled into the RPM. See SASL_README for more details. Mech AuxProp works fine with PF and FC2.