Just a data point resulting in MS using PRA against a SPFv1 record.
First a little background. Bounces go to a bounce domain. Header From is
client specific. In other words, RFC821 and RFC822 From are different.
In one case I added a
v=spf1 -all
for the RFC822 From domain because it would never be used in the RFC821
context.
Now that MS is using v=spf1 records for PRA results, messages from that
domain are marked as "The sender of this message could not be verified
by Sender ID. Learn more about Sender ID".
Yuck.
--
:: Jeff Macdonald | Principal Engineer, Messaging Technologies
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