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Re: DM News says: MSN requires Sender ID Authentication

2005-06-24 18:29:27
On Thu, Jun 23, 2005 at 04:46:05PM -0500, wayne wrote:
<snip> 
Intersting.

I've set up a test account, and sent email from 
wayne(_at_)schlitt(_dot_)net(_dot_)

I received nothing.

My SPF records are:

schlitt.net. TXT "spf2.0/pra exists:_h.%{h}._l.%{l}._o.%{o}._i.%{i}._pra.%{d} 
-all"
schlitt.net. TXT "v=spf1 exists:_h.%{h}._l.%{l}._o.%{o}._i.%{i}._spf.%{d} mx 
a:footbone.%{d} ip4:67.51.52.32/29 -all"

Notice that I have "tracking exists:" on both kinds of SPF records.
After sending email to hotmail, I didn't get a trigger on either
tracking exists: and, get this, I didn't even get a DNS lookup on TXT
records.  Ok, I do have a secondary NS where the query could have gone
to, but the secondary tends to be much slower than my main NS.


So, is MS even following the spec?  Are they checking just some of the
email?


MS is caching DNS results for 24 hours. Perhaps they have a negative cache
too...