Forum Discussion
Email address is constantly blocked
Hi all,
looking for advice regarding blocked email addresses.
In protection.office.com/restrictedusers I have 1 email address that is being blocked every 48h.
The issue is, this is really important to address & it is not sending SPAM/PHISH of any kind.
The address is being used to send a lot of emails (to users in 15 different countries).
It sends around 1000 emails every 24-48h & it is automatically blocked by Microsoft.
Any idea of how to stop this blocking?
Kind regards
2 Replies
Hello! DiVojich
How is the mail address sending these bulk emails? Is it over port 25 ( Un authenticated SMTP )
Or bort 587 ( Secure SMTP )
We need this information to assist further.
Basic Anonymous mail over port 25 usually gets blocked in these bulk scenarios.
Kind Regards
Oliwer SjöbergHi, it is port 587oliwer_sundgren
