Atomicorp

Is it possible to configure postfix/qmail to send all email that it would normally send out itself to another server, and then have that server send the emails after applying spam scores and throttling?

if so, are there any guides or advice on how to set this up?

Thanks

Yes you can do that. If you want to setup a spam frontend (sounds like you do), then I recommend you use Scotts gamera project - that will set everything up to do what you want.

As to how to do it specifically, in qmail just change your smtproutes.

In postfix, basically you need to change /etc/postfix/main.cf:

relayhost = server.name.tld

I didn't know Gamera was able to deal with outgoing as well as incoming. Interesting.

Faris.