EMail server gets blocked by Microsoft

Richard lists-nanog at
Tue Apr 27 14:22:39 UTC 2021

> Date: Tuesday, April 27, 2021 09:35:35 +0200
> From: Dominque Roux <dominique.roux at>
> is there anyone out there who has some experience with the blocking
> mechanism of Microsofts mail server? We're running a mail server at
> our company which ends up on their blacklist from time to time and
> we're wondering if there are some steps we could take in order to
> prevent this.

You may want to join the mailop mailing list:

   List-Archive: <>
   List-Post: <mailto:mailop at>
   List-Subscribe: <>,
    <mailto:mailop-request at>

and ask there as it seems more applicable to that list, and is a
common topic of discussion there.

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