[Mailman-Users] Mailman, Postfix and Google Apps

[Cameron Smith]

I am stuck trying to help a friend configure their setup.

Their main domain has email handled by gmail so the mx for
example.compoints to the google mail servers.

They have a dedicated server that has postfix configured to handle mail for
mailinglists.example.com.

Mailman is set to use mailinglists.example.com

The problem I am having is mail from mailman is not making it to
user at example.com.

Is this a mailman issue or a postfix issue?