Configuring inline protection settings for Exchange Online
Procedure
- In Cloud App Security, go to .
- To turn off Inline Protection for Exchange Online without revoking access to
Exchange Online (Inline Mode), disable Inbound Protection
and Outbound Protection under Inline
Protection.
- To use the message header address for matching the approved or blocked sender
lists in the ATP policy, select Message header address
under Sender Address Match.
The envelope address is always used for matching the lists.
- If you have also granted Cloud App Security access to
Exchange Online, to avoid scanning an inbound message twice with the same
security filters, enable Trust Scan.
Trust Scan applies only to a security filter that is enabled for both
Exchange Online and Exchange Online (Inline Mode) - Inbound Protection.
Email Scanning by the Same Security Filter
Exchange Online (Inline Mode) - Inbound Protection
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When email in transmission
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Scan
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Scan
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Exchange Online
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When email arriving at the mailbox
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Scan
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Not scan
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Note
Trust Scan applies to real-time scanning only.
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