6/25/2025 Important update regarding the cloud hosted Mailbox External Recipient Rate Limit: In order to reduce the impact on customers, Microsoft has again decided to delay the rollout of the cloud ...
Updated Jun 25, 2025
Version 14.0
Blog Post
Although it's great that people like SteveCox are making their scripts available to help others, Microsoft should be doing this.
Microsoft are implementing this change, have all the logic to be able to enforce it and hence also identify what mailboxes are in scope in a tenant, hence you should making this available.
Steve's script is useful and I've been running it, but Get-MessageTrace limits you to only 10 days of data when we need at least a months worth, and even then will need to get several months worth of data, so run multiple times. Ideally a years would be required to be able to identify specific annual events where email activity for certain systems peak, we are an HE institution and so have specific times of the year when email activity can be high due to applications and start of year.