Update 9/17/2025: Updated GCC dates.
As with all cloud services, Exchange Online imposes service limits to prevent misuse of Exchange Online resources and ensure availability for all users. For exa...
Updated Sep 17, 2025
Version 20.0
Blog Post
Arindam_Thokder
Microsoft
MicrosoftIf you see messages sent from on-premises mailboxes to Other Exchange Online Tenant Recipients (so external recipients) in your EXO Tenant Message trace, there is a configuration issue at your end, and it is called wrong message attribution. And yes, these messages are counted. To fix the issue, watch this video where I explained the issue in detail - (99) Establishing Exchange Hybrid Mailflow - YouTube (watch the full video for better understanding. Your scenario starts at 16:30 min)
Thank you for the clarification, so this answer my first question, and I thank you for that, I am indeed in this predicament, what about my second question, how do I get a detail of the message\recipients included in the observed value ?
Thanks