Yes, but it wouldn't surprise me if they adapted their existing 
architecture/code base.

Scott K

Henrik Schack <[email protected]> wrote:

>They seem to have moved on, I just found this article
>http://blog.wordtothewise.com/2012/12/hotmail-moves-to-spf-authentication/
>I guess something needs a little tweaking in their setup  ?
>
>Best regards
>Henrik Schack
>
>
>
>On Fri, Dec 14, 2012 at 11:10 PM, Scott Kitterman
><[email protected]>wrote:
>
>> Hotmail's original (~2006) Sender ID implementation used an offline
>DNS
>> cache and would return temperror if your record was not already in
>the
>> cache.  For small senders there was an address you could email to get
>your
>> record added to the cache.
>>
>> Perhaps they still are using such a design?
>>
>> Scott K
>>
>> Henrik Schack <[email protected]> wrote:
>>
>> >Ahh it seems to be Hotmail being unable to retrieve our SPF record
>:-(
>> >
>> >Best regards
>> >Henrik Schack
>> >
>> >
>> >
>> >On Fri, Dec 14, 2012 at 8:23 PM, Henrik Schack <[email protected]>
>> >wrote:
>> >
>> >> Hi
>> >> I have seen a lot of SPF temperrors in my DMARC reports the last
>few
>> >days,
>> >> Am I the only one with this problem ? Domain in question is tdc.dk
>> >>
>> >>
>> >> --
>> >> Best regards
>> >> Henrik Schack
>> >> IT-specialist
>> >> TDC A/S
>> >>
>>
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>Well
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