SPF Configurations

Dave CROCKER dhc2 at dcrocker.net
Fri Dec 4 23:11:31 CST 2009

Jeffrey Negro wrote:
>    SPF seems to be the way we could possibly
> avoid more spam filters, and delivery rate is very important to our
> company.

You've seen the anti-SPF rants.  At the least, they should make clear to you 
that you should use SPF only and exactly for specific destinations that you 
already know require it.  If you have any doubts about the requirement, you'll 
try to verify it; otherwise assume SPF won't solve your problems.

The other obvious mechanisms for validated identification to receiving operators 
is, of course, with DKIM.  DKIM is entirely comfortable having a validated 
identifier (the d= parameter in the signature header field) be different than 
whatever is in the author header field (From:)

But either way, that's just identification.

As already noted on the thread, what matters most is the set of content and 
operations practices, to establish a rock solid reputation both of you and of 
your clients.


   Dave Crocker
   Brandenburg InternetWorking

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