How to Enable Special Actions for Messages Containing Recipients Not in Address-Book at the Account Level

How to enable special actions for messages containing recipients not in Address-Book at the account level

Solution

Special actions for messages that contain addresses not existing in the Address-Book can be enforced at the account level directly from the WebMail interface. For activating such a filter and defining the implicit action needed, you should login via WebMail and access from the Settings section -> Filters context.

From this new context you can locate this option defined in the Sender not in AB Actions section. By activating this feature you can enforce several actions when this rule will be matched: Send NDR/ Move to trash/ Discard.
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