I have hosted my own email server and i can send and receive emails but the emails that i sent to the people outside my organisation are going to SPAM and when checked it shows the below error message .

Received-SPF: none (google.com: test@profent.net does not designate permitted sender hosts) client-ip=94.200.187.194;

Can some one help on this, as this is the first time i am trying to configure exchange server

Hello

tip:http://support.mailhostbox.com/email-administrators-guide/configure-dns-settings