Possible bug: filter mail_domain by server_id

I am trying to select all mail domains belonging to a server using panel.
Server has name 'mail1.xxx.xxx.net' and server_id is = 3.
I have more then 70 server.
I have got mail domains of many servers.
So, I have enabled mysql log and this is the select I noted:

Code:

 SELECT mail_domain.* FROM mail_domain WHERE  mail_domain.server_id like '%3%'  ORDER BY mail_domain.domain LIMIT 0, 15

This select is wrong.

mail_domain.server_id is UNSIGNED INT, so you should not use 'like'.
This way u are selecting:
server_id =3
server_id = 13
etc etc

If I was not clear I could explain further.

Best Regards