How do I forward all inbound emails to two different servers?

I have a qmail relay server that handles all of my inbound SMTP connections and passes them to my internal mail server (MS Exchange). I want all inbound email to be sent to two different internal email servers. How can I do this?

Answer:

1. add to virtualdomains:

mydomain.com:alias-forward

2. create ~alias/.qmail-forward-default

|forward $LOCAL

|forward $LOCAL

3. add to smtproutes

oldserver.mydomain.com:[1.1.1.1]

newserver.mydomain.com:[1.1.1.2]