Open smtp Relay -how?

[Leonard Cooper]

Hi all,
now, please, NO spam, flames etc....

I need to know how to make this qmail/vpopmail box of ours an open smtp
relay.
I have my reasons , and it will only be temorary (like an hour).

I think I would need to configure vpopmail without --enable-roaming... and
then do something to tcp.smtp to make it open...
Could somebody help me, please??

thanks 
Len