Is there a 3rd party application or some type of transport rule that delays the transmission of external emails? Here's the scenario. User A send an email to inhouse recipients B, C, and D. But.. E was an external recipient outside of the company. This email should not have gone to recipient E. Recipient B,C, and D noticed it.. But.. It already left the email server for external delivery. Now, is there a way to hold external/remote delivery for 2 mins or so? This will allow the internal recipients to stop it for they noticed the error and the original sender did not.