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RunePhilosof-7390 asked RunePhilosof-7390 answered

When I mention a certain domain in an email it never arrives in the inbox or junk folder

If I mention the domain www.masterclass-adfaerdsdesign.com in the body of an email to my office365 email (on a different domain), the email never arrives in the inbox or the junk email folder.
Any email where I mention other domains etc arrive (sent from the same email account as the other emails).
I get no error message.
Microsoft's SMTP server happily accepts the email when my SMTP server delivers it. After that the email is just gone.

www.masterclass-adfaerdsdesign.com is not used for mailing, neither from or to. It is only mentioned in the body of the email.

How do I debug this?
How can I reach a person at Microsoft to debug this?

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RunePhilosof-7390 avatar image
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RunePhilosof-7390 answered

As an organization admin, go to security -> review -> quarantine
https://security.microsoft.com/quarantine?viewid=Email

Find the email and release to recipient (leaving 'report the false positive to Microsoft' checked).

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AndyDavid avatar image
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AndyDavid answered RunePhilosof-7390 edited

that domain has no mx or SPF record.
That needs to be fixed.

https://mxtoolbox.com/SuperTool.aspx?action=mx%3amasterclass-adfaerdsdesign.com+&run=toolpage

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It would be sensible to disallow all mail from the domain with spf and dmarc, since it is not used for sending mails.
However, that is beside the point.

I do not send the email from or to an @masterclass-adfaerdsdesign.com address.
I send an email to my email@...onmicrosoft.com address.
In the message body I mention http://www.masterclass-adfaerdsdesign.com/, then it never arrives.

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