I have a user that has 2 exchange mailbox accounts due to multiple companies that he is doing work for. The mailboxes are housed on the same exchange server in the same information store. The user is being forced to use both calendars due to incoming outlook meeting invites. However, he would like to have all appointments show up on one calendar. In other words, he would like to have them sync to each other (preferredably a one way sync). I have dug around and cannot find a native or easy way to do this. Any help would be great.