Configure SMTP server postfix

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
Dear All,
All emails sent from my server are delivered to the spam folder of (,,,
It does not matter what is the text message.

I need someone to configure my server to solve this issue. It is dedicated server.
Domain name is:
I was checking it using tool and everything seems to be ok .
Thank you,

Skills required:
Computer Security, DNS, Linux, System Admin
About the employer:
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