Fix Cloud-based Message Recall in Exchange Online

Microsoft released a new version of Message Recall that they say is “on average, it’s more than twice as effective at successfully recalling messages than the classic feature.” However, the feature was not supported when the recall message processed through an external connector - which happens when INKY removes a banner, processes Internal or Outbound Mail Protection, or adds a Signature.

This guide will ensure the Recall Messages do not process through INKY, thus allowing Cloud-based Message Recall to work while using INKY. This will become a standard part of the INKY install in the future, but that date will be updated later.

 Instructions

1. Edit IPW Mail for Outbound Processing or IOC Strip Markup ← You’ll only have one or the other rule.

   1. Navigate to https://admin.exchange.microsoft.com/#/transportrules for the affected team

   2. Select Mail Flow → Rules

   3. Find IPW Mail for Outbound Processing and select Edit

   4. In the Except If section hit the + icon

      1. Select The message headers... matches these text patterns

      2. x-ms-exchange-recallreportgenerated and add true false

          

         Open

         

   5. Save

2. Add IPW Filter - Recall Reports

   1. Select Add a Rule → Create a new rule on the same page

   2. Name: IPW Filter - Recall Reports

   3. Apply this rule if using the + icon

      1. Select The message headers... matches these text patterns

      2. x-ms-exchange-recallreportgenerated and add true false

   4. Do the following

      1. Select Modify the message properties set a message header

      2. X-IPW-Ignore to the value of True

   5. Save

   6. Place the rule at the bottom of the IPW Filter section but just above the Organizational Units
      
      

      Open

      

   7. Enable the rule

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