I am constantly getting the following message on my iMac for Outlook for Mac 2011.

Outlook cannot find the server. Verify the server information is entered correctly in the Account Settings, and that your DNS settings in the Network pane of System Preferences are correct.

Also whenever I open Outlook a window appears asking me to enter my password again and also check a box linking it to keychain. This happens every time I open Outlook for Mac 2011.