changing authentication to virtual mailboxes.

[Alberto Rodríguez]

> I recommend setting up both domains as virtual mailboxes. You could indicate
> domain.org as the default domain so that all your current users would not
> need to change their auth username from <user> to <user@domain>.
> 
> -Bill

Ok, now I want setting up all my domains as virtual mailboxes. The
problem is that today I have about 100 users which use /etc/passwd to
authentication. Do you now any utility to change their mailboxes to the
new configuration?  

Thank you very much.