[Gllug] Configuring SPF to cope with secondary incoming mail servers

[Karanbir Singh]

Jason Clifford wrote:
> On Mon, 4 Dec 2006, Karanbir Singh wrote:
> 
>> what portion of the Internet uses SPF ?
> 
> How is that relevant to anything?

why bother testing when most of the spam comes from domains that dont 
publish a spf record ?


> The purpose of SPF is to provide a way for those with their own domain to 
> specify where valid email may originate from tha domain. 
> 
>> and have you chosen to just black list the rest ?
> 
> That's a silly question/comment.

read comment posted above.

> Having no SPF record simply means the domain registrant/hostmaster either 
> doesn't know or care about SPF.

on one mail system I admin, we get between 2.4 - 2.6 Millions emails a 
day, enabling SPF achieves a net result that does not even translate to 
a complete percentage in discarded emails.[1]

- KB

[1] Tested in Apr 2006, over a 2 week period.
-- 
Karanbir Singh : http://www.karan.org/ : 2522219 at icq
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