disabling alerts

list Usa Ims
Sat, 20 Sep 2014 03:58:00 -0700
Message-Id: <user-930650eacab8@xymon.invalid>

Hi,

I need to disable alerts on particular hosts.  So I added '!' in from of the test but last night it alerted me.
Please check my config and offer any help, thanks.

subpage MySQL MySQL
group-only conn|!cpu|!disk|!memory|msgs
10.xxx.xxx.xxx  123.corp.local
10.xxx.xxx.xxx  345.corp.local
10.xxx.xxx.xxx  678 corp.local