22 Jan
2016
22 Jan
'16
5:11 p.m.
It is truly weird. Using the same sender and same
path, one email
to "some.user(a)hotmail.com" is accepted, another
to "postmaster(a)hotmail.com" is rejected.
They are probably ramping up rejection rates slowly, as suggested here:
https://dmarc.org/overview/