scott at kitterman
Dec 2, 2010, 7:44 PM
Post #3 of 3
(1403 views)
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Re: RFC 4480 Section 9.1 - WAS: {Re: How to set up spf for my client/server situation}
[In reply to]
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On Thursday, December 02, 2010 05:33:07 pm alan wrote:
> At 21:54 02/12/2010 Thursday, Derek Diget wrote:
> >On Dec 2, 2010 at 12:10 -0800, Neil Gunton wrote:
> >=>Ok, so I'm not sure where that leaves me with regard to what to put in
> >my SPF =>record, since obviously (well, presumably, since you brought it
> >up) this =>scenario could happen any time, with any of my users. So what
> >to do? =>
> >=>Sorry, this just seems a bit confusing because people are telling me to
> >=>"test", but I can't predict what situations or people I will be dealing
> >with =>in the future.
> >
> >To the SPF guru's.....
> >
> >Why is RFC 4408 section 9.1 not mentioned/suggested/used more often?
>
> because few real admins have that level of control of their dns server
> {to turn on/off query logging)
> and those that do usually already know the hostnames holos/ehlos used
> within their domain already
>
> and those with large enough domains as to not know, infrequently 'own' all
> the authoritative DNS servers as they are large enough to need external
> slaves and other forms of high availability
>
> (my guess)
Plus admins are busy people and this is a non-trivial exercise to set up,
extract the data, and evaluate. Most people don't have that kind of time to
invest.
That said, I'd seen a lot of very large SPF rollouts with very incomplete
records that more of this kind of work could help out with.
Scott K
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