On 26/11/2019 12:41, Stefano Bagnara via mailop wrote:
I don't know if ItaliaOnLine postmaster follow this list and if they
consider this new behaviour a feature or a bug, but I wanted to share
this finding/news with you.
What do you think about this? Do you know other providers making this
"deliberate guess"?
It's bad for an ISP to do that. 'p=none' is often used for the case of
"we've just started using DMARC and don't know if we've got it set up
correctly yet", so treating it as p=quarantine is going to lead to lots
of false positives.
On the other hand, if this is JUST for mail from msn.com, they may have
decided that that domain is established enough that hopefully the admins
know what they're doing, so may have an exception to treat mail FROM
THAT DOMAIN as p=quarantine (similarly with gmail.com, which also has
p=none)
--
Paul Smith Computer Services
Tel: 01484 855800
Vat No: GB 685 6987 53
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