Weird message from postfix when sending emails to @gmail

[BulleT]

(03-15-2010 12:39 AM)foxb Wrote:  Dis you take a look in google help page?

It seems like DNS problem/misconfiguration for me...

Quote:http://mail.google.com/support/bin/answe...swer=10336

In order to prevent spam, Gmail refuses mail when the sending IP address does not match the sending domain. To send mail from your server to Gmail, we suggest using the SMTP relay provided by your ISP. Please note that we are unable to whitelist IP addresses or otherwise make exceptions at this time.

The doesn't tell me much. I know I have a problem with my reverse dns. But the domain who sent e-mail has the server's ip address.
The misconfiguration is somewhere in the postfix config file.

Received: from admin.phpqa.info (phpqa.info.local [127.0.0.1])

That is not normal. Postfix uses localhost to introduce himself ?