Hello,
> Same situation here, Microsoft suddenly blocking our main server for all
> M365 domains with the same 5.7.511 error code. No indications on what
> could have possibly triggered the issue. All DMARC reports are clean, no
> marketing emails, no known hacked accounts, no clear suspects. The
Tobias Grychtol-Matthaeus via mailop kirjoitti 22.8.2024 22:46:
The Microsoft demicery team wrote me round about 36 hours before
now, that they mitigated the IP address and that it should work now.
It still does not work. I send all bounce emails to
del...@microsoft.com like it was written in t
x: +49 421 2028-5658
E-Mail: tgrym...@mpi-bremen.de
-Ursprüngliche Nachricht-
Von: Faisal Misle via mailop
Gesendet: Dienstag 20. August 2024 20:54
An: mailop@mailop.org
Betreff: Re: [mailop] Strange behavior of the Microsoft Blacklist
It actually has more than one hostname, another p
Title: AW: [mailop] Strange behavior of the Microsoft Blacklist
Dear all,The Microsoft demicery team wrote me round about 36 hours before now, that they mitigated the IP address and that it should work now. It still does not work. I send all bounce emails to del...@microsoft.com like it was
- D-28359 Bremen
Raum: R1130
Telefon: +49 421 2028-5720
Telefax: +49 421 2028-5658
E-Mail: tgrym...@mpi-bremen.de
-Ursprüngliche Nachricht-
Von: Faisal Misle via mailop
Gesendet: Dienstag 20. August 2024 20:54
An: mailop@mailop.org
Betreff: Re: [mailop] Strange behavior of the
It actually has more than one hostname, another poster here mentioned
having issues too. Removing one of the hostnames the rDNS of the IP
points to may fix the issue.
On 8/20/24 5:54 PM, Gellner, Oliver via mailop wrote:
On 20.08.2024 at 16:40 Tobias Matthaeus via mailop wrote:
A server that
On 20.08.2024 at 16:40 Tobias Matthaeus via mailop wrote:
> A server that I manage is currently on a Microsoft blocklist for unknown
> reasons. If you do exactly what Microsoft says in the bounce e-mail: “Forward
> this error message to del...@microsoft.com” then this e-mail also bounces
> agai
Hello everyone,
A server that I manage is currently on a Microsoft blocklist for unknown
reasons. If you do exactly what Microsoft says in the bounce e-mail: “Forward
this error message to del...@microsoft.com” then this e-mail also bounces again
with “Access denied”. By the way, it's a great i
