the error suggests that you have set the Email Password behavior to use the Pear Mail Using SMTP email object.
It also looks like you have left the setting for the Path to Pear blank so that the server will use the PHP Defaults setting for the include_path which is set as:
include_path='.:/usr/local/php5/lib/php')
but the pear mail package is not being found in that location.
you will need t contact GoDaddy to see if Pear Mail package has been installed on the PHP Server, and to find the correct path to use to the Pear package.