On 2014-04-26 Sat 14:04 PM |, John Cox wrote: > > Unfortunately the whole point of SPF (unlike Sender-ID which works > much better and on much the same principles) is that you can reject > the message before receiving it >
That's the idea, but it is often abused by dumb hostmasters (e.g: google) publishing their entire address space. Infected PCs in the sales office, employee WiFi zones, tape silos, routers, web servers, etc... are not valid mail exchangers, so SPF records of 'valid sending IP address' can't be trusted. SPF might be slightly helpful, but it is not reliable. -- You received this mail because you are subscribed to [email protected] To unsubscribe, send a mail to: [email protected]
