It seems as though you don't have Database mail set up correctly.

The error message points to an invalid email address and or username / password for the email account. You might verify that you have the profile and account configured correctly.

If the profile and account are configured correctly try restarting the SQL Agent.

(That worked for my problem, but I wasn't getting exactly the same errors you are, I was getting: "Could not generate mail report.An exception occurred while executing a Transact-SQL statement or batch.No global profile is configured. Specify a profile name in the @profile_name parameter."

Thanks,

jim