Contact Forms
There are a number of settings for contact forms that are easy to miss, since they aren't readily visible on the site. After you are sure that all the settings are right, you should also submit a test contact on every unique contact form to make sure the email address actually works.
The Site Information settings page at /admin/settings/site-information contains the from address setting.
/admin/build/contact has "To:" addresses and auto-responders, etc.
If you use Webforms, there are similar settings at /admin/settings/webform and per-node at /admin/content/webform (minimally, check the to address in each webform node).
by kwinters
