The envelope address is always used for matching the lists.
Trust Scan applies only to a security filter that is enabled for both Exchange Online and Exchange Online (Inline Mode) - Inbound Protection.
Protection Mode |
Scanning Time |
If Trust Scan Disabled |
If Trust Scan Enabled |
---|---|---|---|
Exchange Online (Inline Mode) - Inbound Protection |
When email in transmission |
Scan |
Scan |
Exchange Online |
When email arriving at the mailbox |
Scan |
Not scan |
Trust Scan applies to real-time scanning only.