How to set routing in qmail?

[Michail A.Baikov]

Hello.

I'm setup two mail servers (powered by qmail).

#1 server maintained only local users pop3 and smtp (i.e. all mail for local
users do not send to server #2 and placing direct into users mailbox) and
working only for local network.
#2 server maintained only smtp service and look to internet. All mail for
local users must be route to server #1.

How to set it?

Please help, and thanks for advance!