--- Begin Message ---
Matthew Richardson wrote on 2022-07-06 07:52:
...
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
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:-
https://lists.dns-oarc.net/pipermail/dns-operations/2020-April/020124.html
The scale of the general problem (after this fault
On Wed, Jul 06, 2022 at 11:42:14AM +0200, Daniel Baumann wrote:
> ns{1,2}-proddns.glbdns.o365filtering.com resolv to the same IP, do
> not support EDNS and don't answer on TCP queries.
Well, FWIW, the same two IPs.
On Wed, Jul 06, 2022 at 11:37:38AM +0200, Stephane Bortzmeyer wrote:
> The
Hi,
> Anyone else with trouble to reach the *.o365filtering.com DNS Servers?
yes.
this started ~mid last week only sporadically (one fail every ~12 to 24h).
since today, we cannot resolve
${tenant}-mail-onmicrosoft-com.mail.protection.outlook.com. anymore (for
which
Yes, there seems to be a global outage:
July 6, 2022 11:03 AM
Title: Some users may experience delays when sending or receiving
email messages in Exchange Online User
Impact: Users may experience delays when sending or receiving email
messages in Exchange Online.
More info: Users may see the
--- Begin Message ---
On 06/07/2022 11.01, Thomas Mieslinger wrote:
Anyone else with trouble to reach the *.o365filtering.com DNS Servers?
I believe that's discussed here:
https://chat.dns-oarc.net/community/pl/m864xf3xrf8adqm8kx6sdku6bo
--- End Message ---
The authoritative name servers for mail.protection.outlook.com
apparently don't reply if you use EDNS. And it seems many resolvers
don't fallback on old-DNS (and rightly so). Seen from the RIPE Atlas
probes, many resolvers cannot resolve names under
mail.protection.outlook.com (here, the MX of
Anyone else with trouble to reach the *.o365filtering.com DNS Servers?
___
dns-operations mailing list
dns-operations@lists.dns-oarc.net
https://lists.dns-oarc.net/mailman/listinfo/dns-operations
