me...
It'd be interesting to see real-life examples for msn.net,
microsoft.com, and sendmail.com for study.
Ok, teach a man to fish: dig -t txt _ep.microsoft.com
The record I get back right now from microsoft.com is (reformatted
slightly by me for ease of reading):
<ep xmlns='http://ms.net/1' testing='true'><out><m>"
"<mx/>
<a>213.199.128.160</a>
<a>213.199.128.145</a>
<a>207.46.71.29</a>
<a>194.121.59.20</a>
<a>157.60.216.10</a>
<a>131.107.3.116</a>
<a>131.107.3.117</a>
<a>131.107.3.100</a>"
"</m></out></ep>"
However, looking through our logs I see that in the past 24 hours or
so we've received email from someone(_at_)microsoft(_dot_)com from the following
hosts which do not appear in that list:
207.46.248.64 delivery.pens.microsoft.com
207.46.248.65 delivery.pens.microsoft.com
207.46.248.66 delivery.pens.microsoft.com
207.46.248.67 delivery.pens.microsoft.com
207.46.248.69 delivery.pens.microsoft.com
131.107.3.121 mail5.microsoft.com
131.107.3.124 mail2.microsoft.com
131.107.3.126 mail6.microsoft.com
and, perhaps an interesting case:
209.11.164.116 mh.microsoft.m0.net
interesting because m0.net is probably being paid to send e-mail
marketing on behalf of microsoft so the only way they'd be getting
through in this new regime would be if microsoft listed them as
authorized in their _ep record.
I suppose they (m0.net) could use the Sender: or similar alternative
but looking at an actual example I see that they (m0.net) do not. So
it'd have to be in microsoft.com's list and as far as I can tell it's
not.
So, anyone want to take a reasonable stab at these discrepancies?
By reasonable, I'm hoping for something more than "maybe the _ep
record was different when those msgs flew" because that doesn't seem
likely given the actual examples, unless you know this for a fact.
Is the microsoft.com record complete or not?
Or am I misunderstanding something?
And, if it's not complete, why not and, to reiterate my original
request, what would a complete record look like?
Thank you.
--
-Barry Shein
Software Tool & Die | bzs(_at_)TheWorld(_dot_)com |
http://www.TheWorld.com
Purveyors to the Trade | Voice: 617-739-0202 | Login: 617-739-WRLD
The World | Public Access Internet | Since 1989 *oo*
_______________________________________________
Asrg mailing list
Asrg(_at_)ietf(_dot_)org
https://www1.ietf.org/mailman/listinfo/asrg