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dmarquesgn's avatar
dmarquesgn
Iron Contributor
Jan 05, 2023

Defender Mail flow status report vs Exchange Inbound messages report

Hi,

I'm trying to get some statistics from our email infrastructure, like total received emails, total blocked emails, etc etc.
I was looking at the best source to extract the information, and I've some contraditory data, which I would like to understand and maybe someone has already faced this.

On Exchange Admin Center -> Reports -> Mail flow -> Inbound Messages Report, if I select 30 day period, I can see a total number of 405.253 received messages.

On Microsoft 365 Defender -> Reports -> Email & Collaboration -> Mail status report, if I select just Inbound messages, I can see a total of 549.524 emails from the last 30 days.

On the other hand, I've created a Powershell script to extract the same information, which is basically using Microsoft Graph to extract an email activitity count report, which I then dump to csv and count the received and got a total of 2.249.484 received emails.

 
So, does anyone knows which is the difference between all this data?
Thanks
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