I couldn't find any documentation that covered all the pieces for configuring my latest Django site so I hope this helps someone else out.
I had used mod_wsgi under Apache for my other Django sites. But now I'm using different python versions for the sites (until if/when ...
Here are some notes I took on configuring my Slicehost Ubuntu Gutsy installation to use Postfix to send emails via Google Apps. I am far from an expert on postfix configuration but maybe these notes will be helpful to others needing this configuration.
These sites contain the key information: