EMail server gets blocked by Microsoft

Brian Turnbow b.turnbow at twt.it
Tue Apr 27 14:46:56 UTC 2021


Hi Dominque,

And sign up for snds
https://sendersupport.olc.protection.outlook.com/snds/index.aspx

It will give you the status of your IPs and  you can get jenkmail reports etc.

Brian

From: NANOG <nanog-bounces+b.turnbow=twt.it at nanog.org> On Behalf Of Mel Beckman
Sent: Tuesday, April 27, 2021 4:19 PM
To: Dominque Roux <dominique.roux at ungleich.ch>
Cc: nanog at nanog.org
Subject: Re: EMail server gets blocked by Microsoft

Dominque,

Have you read this Microsoft guidance on email servers? It covers the most common problems, such as missing SPF records, incorrect or missing IN-ADDR DNS, etc:

https://sendersupport.olc.protection.outlook.com/pm/troubleshooting.aspx



 -mel beckman


On Apr 27, 2021, at 6:54 AM, Dominque Roux <dominique.roux at ungleich.ch<mailto:dominique.roux at ungleich.ch>> wrote:
Hi All,

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.

Cheers,
Dominique
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