This happens only on the client side for both Apple Mail and Entourage. This is a Power Mac G5 so I cannot install the Zimbra Client. When logging into the web client this is not an issue. However, the date stamps on the web/server are incorrect from merging an old mailbox from the switch to zimbra, it appears a majority of the mail was sent on March 17th (the day we merged the mail) but it doesn't appear this way on the client side it shows the proper date stamps. Very strange. I have removed and re-added the accounts a number of times for both Apple Mail and Entourage with the same result. This seems to keep getting worse more and more mail is copying itself.
Any thoughts or suggestions?