stuart at bmsi
Jun 12, 2009, 7:32 AM
Post #2 of 3
(547 views)
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On Fri, 12 Jun 2009, Jeff Wampler wrote:
> One of our clients is having trouble sending us e-mail, so I ran a DNS
> report. They have a weird SPF record that I've never seen before.
> ("v=spf1 include:spf.messaging.microsoft.com include:listrak.com ~all"
> [TTL=3600]) The part that is confusing to me is the include:
> spf.messaging.microsoft.com. I did an Nslookup and it doesn't return an
> IP address. I also did a search on the internet and all I found were
> other domains using this string in their SPF record. Does anybody have
> any ideas what this record does and how it works? If SPF records are
> used to verify that the mail is coming from an authorized IP and this
> record does not resolve to an IP, then how does it work?
For SPF records, you look up the TXT record:
spf.messaging.microsoft.com descriptive text "v=spf1 include:spfa.frontbridge.com include:spfb.frontbridge.com -all"
--
Stuart D. Gathman <stuart[at]bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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