SPF record

[Res]

On Mon, 3 Nov 2008, Faehl, Chris wrote:

> I believe this topic is rapidly in danger of becoming off-topic - but SPF and DomainKeys/ DKIM both indeed do say that "spammer is authorized to spam from that domain" - at which point, reputation services can be employed to (more) accurately characterize the types of email being delivered from that domain. Both email authentication technologies have their best effect against (as mentioned many times now) forged email, and won't do much to stem spam "legitimately" originating from the big free email providers.


You might want to look at your client Chris, you are not wrapping.
SPF is a DNS topic as well as SMTP, I think its safe to assume this is
on topic, so long we w don't drift too far.


> Adoption rate of both SPF and DomainKeys/DKIM is not encouraging

The problem is likely that most hosting companies do not have it as an 
option in their setup scripts, and most people are oblivious and wont
add an entry even in the TXT field, thats even if that is made
available to them, which in most cases it also is not.

DKIM is like SenderID in that they are both seriously problematic with 
mailing lists, where as SPF is not, which is one reason why I wont be 
doing any DKIM testing on our MTA's, its the reason I dumped SenderID 
checking, now everyones happy :)

-- 
Res

If you are not part of the solution, then you are part of the problem!