DLP prevent from: or sender: mail property is controlled
when the user sends an e-mail from the common mailbox common.mailboxATcompany.com, the field from: contains common.mailboxATcompany.com and at the same time the field sender: will be added in the e-mail and contains sender.mail.addressATcompany.com.
When I setup rule to block mails and add exception in the Sender field for common.mailboxATcompany.com it does not work and mails with from: common.mailboxATcompany.com are blocked.
It does not work when both properties (from: and sender:) are filled and common.mailboxATcompany.com is in from:
It looks like DLP Prevent controls only sender property and not from property.
Which of these properties (from: or sender:) does DLP Prevent (mail) control?
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