Nowadays, every sicko can buy a .com domain for 9$ or even less. Spammers buy domains, put correct SPF records in their zonefiles and throw the domain away afterwards... (just like you did with hotmail accounts a few years back :-))
So IMHO DNS based spam fighting doesn't work. At least not the SPF way...
Cheers, Viktor
Bernard Dugas wrote:
Bonjour,
Norbert Bollow wrote:
Use DomainKeys instead of SPF. DomainKeys serves the same purpose, but doesn't share the fundamental brokenness of SPF.
And why not using the existing authentication protocol on outgoing smtp server ? So the sender can use the smtp server of the provider of its email address from any network and SPF can work without any problem.
Did i forget anything ?
Best regards,