I setup a new Exchange server 2007 from scratch. Im able to send email out but not able to receive any emails.
(NAT)Port 25 is open in the firewall.
No issues in firewall.
When I send any emails out im able to receive it in my gmail
But if i send from gmail to exchange i get an gmail error
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: 530 530 5.7.1 Client was not authenticated - on relay of: MAIL FROM:XX@GG.Com (state 14).