The error that the other server returned was: 550 550-Please turn on SMTP Authentication in your mail client, or login to the IMAP/POP3 server before sending your message.

You don't have SMTP authentication enabled in Postfix?

I cannot receive email from outside of the localhost.  The email works fine from and users inside of the host.

This has been a troublesom thing to debug as i do not get any log of the incoming mail. I have verified that iptables have the correct ports open and have tested it with iptables off.

The sender gets a 550 message reporduced below.
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550-Please turn on SMTP Authentication in your mail client, or login to the
550-IMAP/POP3 server before sending your message.  mail-vb0-f47.google.com
550-[209.85.212.47]:58445 is not permitted to relay through this server without
550 authentication. (state 13).

----- Original message -----

X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=google.com; s=20120113;
        h=mime-version:x-originating-ip:date:message-id:subject:from:to
         :content-type:x-gm-message-state;
        bh=zvGdvY4SCNdH2B8K3IRiw3EVIg4RLblNEm/uw80fSck=;
        b=pu++DKS/+th/wrUF6uH3qU2i62YGANUANr64tPaFn4dIwdJGr8Ah+qu1+hxja9oQxy
         iShPJLXC3azD1YSGaPFVd6f6FfXAxrZRtomnv2Y9mr6hXONaY160EorT1Bz2GKsvuOVa
         6u7vFWNg6qNs3U1h0KaQafXDLw5rKmK5ZZACJ4woISQ0MmdP0OtqaosyuH23ZRhcaMvb
         0H3vqWXF1WuFFIZX9qLsTqBbHYTvlwaM/ySDQ0d7wPa0MXbd1RJ/ajh5mxhdaQw3y433
         xXcN4yHkq32/bMOotfeVPZlMPPGQTFpYha+NKtgJ8bh1EcN0lwe38KaR13p0+YmHECE6
         c5+w==

I also have a permission issue with amivis when the cron runs.

I believe that this issue is due to installing on "a" and then changing it to "mail" because I had to migrate from my old mail server.  I have also installed my own secure certificates for the "mail" server.

I have gone through all the configure files and have scoured the web.

How can I at least turn on the debugging to log what is happening?