Exchange 2019 - MICROSOFT-CORP-MSN-AS-BLOCK

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isynergy

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Outlook version
Outlook 2019 64-bit
Email Account
Exchange Server
We facing strange behaviour that we received the below URI Stem (/ews/First.Surname..Domain.com/exchange.asmx/WSSecurity) with HTTP status 200 (The request has succeeded) and the source is from IP 52.96.18.205 (MICROSOFT-CORP-MSN-AS-BLOCK)

The Current Installed Version is Exchange Server 2019 CU8 with Security Patch KB5001779

I found the below URL
Office 365 URLs and IP address ranges - Microsoft 365 Enterprise

Please advise about this behaviour
 
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< Forward email body to other mail list directly from Exchange server | Report Permission >
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