need 587 TLS incoming and outgoing mail setup on server - 25 and 446 port are close our server by DC

I need my Linux server’s Goolgle SMTP to relay outbound incoming mail through Google Workspace over port 587. The basic ports are open but the SMTP handshake still fails, so I’m looking for someone to:... (Budget: ₹600 - ₹1500 INR, Jobs: Apache, Linux, Network Security, OAuth, PHP, SMTP, System Administration, VoIP)