Yea, I'm sure it's allowed. It's no different than visiting the site.
I was just referencing the script that is posted here which checks everyone who connects to the server.
Obviously, in the case of an on connect script, it would just be plain rude to abuse a wonderful free service like this by using their bandwidth for no reason. Plus dns is almost instant.

Sorry for any confusion napa182, I wasn't responding to your comment. I Only just now read your comment with the trigger suggestion. I saw this post right after sunslayers first comment and I went out to dinner and didn't refresh the page when I got back.