do you use SPF TXT RRs? (RFC4408)

Mon Oct 4 17:34:54 UTC 2010

I've found lots of domains with +all which really should be -all since they were all spam. 

Jared Mauch

On Oct 4, 2010, at 1:08 PM, Nathan Eisenberg <nathan at atlasnetworks.us> wrote:

>> If it passes SPF we remove a few points of the spam weight.
> 
> I would rethink this practice.  Many spammers publish SPF valid records these days precisely because of this.
> 
> Nathan 
> 
> 