[plug] Postfix, Transport (outgoing) based on sender

[Timothy White]

I've been reading the tut at
http://souptonuts.sourceforge.net/postfix_tutorial.html and am
interested in the bit about sending mail via the gmail smtp servers.
I'm wondering if there is an easy way to do this but use the
credentials provided by the user when they auth to the local smtp
server to auth with the gmail one, or lookup up the credentials based
on the user who authed to the local smtp server.

Anyone know how to do this?

Thanks
Tim