Why SPF over PTR?

Tue Nov 30 08:47:30 UTC 2004

On Mon, Nov 29, 2004 at 10:39:22PM +0000,
 phn at icke-reklam.ipsec.nu <phn at icke-reklam.ipsec.nu> wrote 
 a message of 50 lines which said:

> SPF , well, you will have to look long before finding someone cared
> to create them. Still you cannot rely on them until pretty much
> everyone "serious" has SPF-records,

aol.com, hotmail.com, gnu.org, pobox.com, amazon.com, freebsd.org,
ipsec.nu have SPF records and you say that noone use it???

True, isc.org does not have SPF records :-)