18 Oct
2004
18 Oct
'04
10:25 a.m.
-----Original Message----- From: James Riden [mailto:j.riden(a)massey.ac.nz]
SPF is merely designed to tell you whether an email has come from an authorised server for that domain. If an SPF check fails, it's probably spam. (Or a roaming user and someone hasn't got their config right.)
I've wanted to setup SPF in the past but have always wondered what happens when you have a roaming user sending via paradise for example. Would you need to add all the outbound mx servers; for example paradise receives mail to smtp.paradise then it could come from one of many hosts that do anti virus and spam protection. Would one need to know every internet facing ip for all ISP's mailservers? Barry