Microsoft is blocking mail from us (Wikstrom Telephone Company, small,
rural ISP).
My guess is this is a lingering or second-order effect from yesterday's
outage. For example, since all that mail was delayed, when they came
back online, perhaps the resulting higher volume of mail tripped their
spam filtering.
I submitted support request 7096434358 at olcsupport.office.com.
I received an automated or form response that effectively says we are
not blocked. But we still are. The automated/form response asked for
specific error messages, which I had already provided in the support
request (it was a required field). I replied to the email with a fresh
example.
Anyone have other ideas or a useful contact?
--
Richard Laager
IT Manager
Wikstrom Telephone Company
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