Thanks for your suggestion, but it looks like an Outlook request, so I'd suggest you post to the Outlook forum.
http://social.technet.microsoft.com/Forums/en-US/outlook/threads
Hi,
The Task is an Outlook feature which data is saved in mailbox in Exchange server. Since the issue is related to the Outlook feature instead of Exchange server, please refer to Ed Crowleys suggestion to ask a question in Outlook forum for more help:
https://social.technet.microsoft.com/Forums/office/en-US/home?forum=outlook
The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding.
Regards,