Wednesday, May 25, 2016

Multiple Transport Rule conditions and the OR operator

Here’s something I ran into today and would like to share. Exchange transport rules, also known as mail flow rules, can have multiple conditions, actions and/or exceptions which makes them flexible and a powerful tool. However, if you add multiple conditions an AND operator will be applied. This means that the rule will be triggered only when all conditions are True.

How can we replace the AND with an OR? For instance, if we want to apply a certain action when the sender is member of a group or a specific person? The answer is that we can’t do this with a single transport rule. There is an easy solution, simply create a copy of the transport rule and update the condition. Now the action will be applied when either of the transport rules is triggered because the single condition is True.

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