Phising warnings (in gmail) when using a gmail address as the website email address. How to avoid it? I would like to use a gmail address (a simple email address. i'm not using google apps) as my website's email.

The problem is that users receiving messages from the websites (notifications etc..) have a yellow bar warning them that this might be a fishing attempt.

I thought there might be some settings or best practices to avoid this problem.

Any ideas ?
I have been using this module for a long time without problems. You need to authenticate once, and then all your site emails are sent through the google smtp server.

http://drupal.org/project/smtp