We have a client using Outlook 2010 on hosted exchange. They have a rule to delay sending for 2 minutes any messages that they send. That allows them to modify the message should they want to before it goes out. They have this exact account/rule on 2 machines and it works perfectly on 1. However on the 2nd machine whenever they modify the message in the Drafts folder and then hit the send button, the message never goes out.