If you redirect the output you need to quit dominions properly or the output may disappear when you press ctrl-c. Hmmm... quitting a text server properly is a bit tricky but can be accomplished by 'killall dom2'. That should keep cat from being killed as well.
It's a bit silly that I have to kill the server before I can see what's going on but that might be ok in combination with the screen command (which is indeed very useful).