Issue: Multifactor authentication (MFA) emails sent from Microsoft’s official notification address msonlineservicesteam@microsoftonline.com may be delayed, filtered into junk, or blocked entirely by anti-spam policies. This is the same address we rely on to deliver your MFA codes.
Currently affected:
- Login process to www.mscrm-addons.com, that relies on MFA from Email
- Registration process on www.mscrm-addons.com, which requires MFA from Email
Administration guide for Microsoft 365 Defender:
- Login to https://security.microsoft.com as a Security Administrator or Global Administrator
- Select Email & Collaboration -> Policies & rules -> Threat policies -> Anti spam
- Open your Anti-spam inbound policy (Default) or custom policy that is affecting your users
- Click Edit allowed and blocked senders and domains
- Under Allowed senders, click Manage senders → + Add senders.
- Enter the blocked email:
msonlineservicesteam@microsoftonline.com - Click Add senders, then Done and Save
We have reported the issue to Microsoft. As the root cause lies outside the scope of our organizations control, but we are actively monitoring the situation.
Further reading on the topic: