[rt-users] how can i set Default ACLs ??

[RT2 Troubles]

Wow.. Big thanks to Greg Smythe .. that man is a problem solver and a half. 
After fixing two issues in a row via some private exchanges I decided to stop 
bugging Greg and I'm posting this last (I hope) problem to the list. 

We can now accept customer mail (thanks Greg) and RT2 is putting it into the 
right queues (thanks again Greg), but when we reply to the customer submitted 
ticket, there's no mail sent and no error in the rt.log files or in 
/var/log/maillog.. It's almost like it's not even trying to send the reply 
out. Any suggestions of other log files to check or which settings I should 
check that effect mail replies?

Thanks in advance, this list is great!