Routing users - is this possible to implement?

[Harri Nyman]

I am trying to set up qmail-frontend to our mailsystem, such way that
some of mailboxes are on this qmail machine, and it SHOULD route all
unknown mail to another server - is this possible? I do recall reading
something on some webpage about this, but...help? Please?

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Harri Nyman           [EMAIL PROTECTED]             NovoGroup Oyj
Systems Specialist    Tel:    +358 (0)9 5067 2680