[nzlug] Postfix + SASL authencation to another Postfix

[Chris Hodgetts]

Hey, 

I was wondering, if anyone knows how to do this?

I have a machine outside my network, the ISP it's connected to blocks
port 25. (and has a non-static public address).

I want the postfix instance on it to connect back to our primary postfix
server(on a static IP), on another port, and authenticate via sasl so
this box can deliver messages back to us here in the office.

Postfix on the hostile network is only listening to 127.0.0.1, and in
reality the only mail from this box will be log checks, and so forth,
standard admin emails.

If the remote box had a static IP I would just add that address to
mynetworks but as it doesn't, I thought this could be a good way to do
it.

Unless anyone has any other suggestions...