Summary

Learn what to do when a suspicious domain is blocked during the Review all email domains step.

Overview

When preparing your migration from On-Premise to Cloud, the below error message is presented during the email domain assessment:

The list of suspicious domains blocked will appear at the bottom of the same screen.

This error happens as all the users migrated to the cloud must have a valid email.

Solution

Locate the users with the invalid domains and either:

• Change their email address to a valid one.
• Delete the user, if the same is not needed.

More details can be found at Assess and prepare users by fixing their email addresses.