This server is running Fedora Core 6, since I like to play with fresh packages - Debian was always years behind and i did not want to depend on backports.org forever. So anyway, Fedora has always some basic things which just don't want to work out of the box. bind-chroot being one, and proper local mail delivery with procmail being another. Should you ever get something like:

Mar 28 08:00:39 h70524 postfix/local[4916]: 4D2A440C646: to=<root@pugio.net>, orig_to=<root>, relay=local, delay=3.9, delays=3.6/0.17/0/0.1, dsn=5.2.0, status=bounced (can't create user output file. Command output: procmail: Couldn't create "/var/mail/nobody" )