View source for Destination Address Filter

The Destination address filter works the same way as the Source address filter, except for the ‘To:’ address instead of the from address. This can be used to deny specific users messages. Specify the address with standard syntax: “username@domain.com”. This is useful for when an account is no longer desired to be used, or when a notification is desired for each time a message comes to a specific user.

When notifications are set for a specific user, note that each time a message is sent to a specified address then the filter will fire and a notification will be sent, even if the message was blocked as spam. Every message is scanned by every enabled interface, (except for the SPF and IP reputation scans if they are configured for connection drop).