Outlook Help (Error Message)

I have a new machine and when I try to reply to an email, it comes back with this message.

"553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)"

Also, when I try to send an email and I click on "To:" to add an email address, I get the following:

"The address list could not be displayed. The Contacts folder associated with this address list could not be opened; it may have been moved or deleted, or you do not have permissions. For information on how to removed this folder from the Outlook Address Book, see Microsoft Outlook help.

Anyone....Bueller...anyone?