Virtual hosts

[Joe]

I have a qmail system running on RH6.2. User accounts are in a mysql database.I'm using Ian  patterson's checkpassword-mysql-2.0.0pre1patch and takeshi's  qmail-1.03-mysql-0.6.6 patch. However, I have been trying to implement virtual domains by putting the domains name in the virtualhosts table( as per ians instructions) without success. Any mail sent to the virtual domain bounces with the error "Sorry. Although I'm listed as a best-preference MX or A for that host, it isn't in my control/locals file, so I don't treat it as local. (#5.4.6)". Anybody got an idea where i could be going wrong?   Joe