To setup dbmail-imapd to run under xinetd you need to the following:
On CentOS 4.3: Create file: /etc/xinetd.d/dbmail-imapd File contents should look like:
service imap
{
socket_type = stream
wait = no
user = root
server = /usr/local/sbin/dbmail-imapd
protocol = tcp
server_args = -n
log_on_failure += USERID
disable = no
}
Modify the path to the server as needed.
Thats it!.