I have installed send mail on my rh mail server
its working but got e error.
When I mail to any email address which are in same domain
and I can recieve any mail from any domain
But When I am trying to send mail to deffernt domain(yahoo,hotmail....etc)
then show a error
The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was 'firstname.lastname@example.org'. Subject 'test', Account: 'hostname.domain.com', Server: 'hostname.domain.com', Protocol: SMTP, Server Response: '550 5.7.1 <email@example.com>... Relaying denied. IP name lookup failed [192.168.1.17]', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79
Please anybody help me