[dns-operations] mail.protection.outlook.com has EDNS issues

Matthew Richardson matthew-l at itconsult.co.uk
Wed Jul 6 14:52:56 UTC 2022

Aside from today's outage, the DNS for mail.protetion.office.com seems to
have been very poor for a long time.  As an example from 2020, Brian Somers
lamented its state:-


The scale of the general problem (after this fault has been fixed) can be
seen at:-


As MS is a Silver member of DNS-OARC, are there any MS folks on here who
might be involved with the authoratitive side of
mail.protection.office.com, or who might be able to get the issue raised
internally at MS?

Alternatively, is this the sort of issue in which DNS-OARC could become
involved by way of outreach to MS about the problems?  The lack of EDNS0
will probably become an increasing problem over time.  This DNS setup is
used for ALL email to Office365 business users, which is not a small

Best wishes,

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