Hello,A user from my company is out sick and it will last for a month. He could not set up the Out Of Office message.How could I set up the OoO from the Exchange 2007 server??Thank you all in advance for your input

Don't think you can do what you are asking. Sounds like you'll need to give your administration account full mailbox access to this account's mailbox. Then use Outlook to login to that mailbox (as the primary mailbox) and set the OOO for him. Then remove the full mailbox access you added earlier.

If you setup full mailbox permission on his/her mailbox to your ID, you can open his mailbox in outlook or OWA and setup OOO there... Give Full Mailbox permission by following below article... How to Allow Mailbox Access http://technet.microsoft.com/en-us/library/aa996343.aspx Open his mailbox in OWA using below article and set OOF in settings... How to Enable Explicit Logons in Outlook Web Access http://technet.microsoft.com/en-us/library/aa998830.aspx Amit Tank | MVP Exchange Server | MCITP: EMA | MCSA: M | http://ExchangeShare.WordPress.com