[exim] Mails are going to Spam

Hello ,

I have recently installed and configured exim on my server but I see that
the mails are marked as spam and after some research it seems to be due to
the ACL SMTP authentication verification settings .

I am not an exim guru if any one can guide me how to setup correct SMTP
authentication in exim that would be really great full.

I have attached my exim.conf file with this mail.

Thank you
Pratap