There are multiple things going on with MS authentication. Yes, sometimes there is an obvious reason for the DKIM (or SPF) failure. But in other cases there’s nothing obvious going on - and why are they rejecting mail that they admit passes DMARC, anyway. Also, some senders are retrying the send and its delivered the next time.
The MTA I'm using gives me a lot of control over message disposition so it wouldn't be too hard to look for that error and put the message back in the queue a few times. I'll do that if I see this more often.
Regards, John Levine, [email protected], Taughannock Networks, Trumansburg NY Please consider the environment before reading this e-mail. https://jl.ly _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
