Unable to remote access MySQL - Unbuntu
Verify that the port is open. From a remote host with the default port: 
telnet &lt;ip&gt; 3306 

Can you show us the my.cnf file, [mysqld] section with the bind address parameter.

Can you ping that ip address at all? Do you use a hostname or an ip address to connect? If it works with ip and not hostname you may have a dns configuration issue.