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Emails detected by Microsoft Exchange Online are not detected by Kaspersky Security for Microsoft Office 365

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Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials.

Why are emails detected by Microsoft Exchange Online not being detected by KS365? Because "first come, first served"?

Yes. In more than 95% of cases, Microsoft Exchange anti-malware and anti-spam filters are processing all objects before KS4O365. That being said, all the detections performed by our application are actually detections of mail flow that has already been scanned by Microsoft filters if they are not disabled.

If some email was already scanned and quarantined by Microsoft, then we do not receive it for scanning, as it was already done on the Microsoft side.

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