can you connect via a CLI to the db form the non-localhost?
ie.
%mysql -uroot -ppassword -hdc2-mysql-01.kattare.com my_db
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1 to server version: 4.1.12a-nt

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql>

Sort that out fist via mysql.