Here the result what I’m geting
So, you don’t have port 25 at all. It’s not just Google that’s blocking you.
That’s a question for your hosting provider or ISP. Many hosts/ISPs do not allow sending mail, some will unblock the port if requested. Some only block if they receive abuse reports about your IP. I can’t tell you why you’re blocked.
You can always use a mail relay service, as I suggested above, if you can’t get port 25 opened.
I tried testing one of my other server where i get same results but here everthing is working fine here sending emails is working, in both results i get connected to mail.virtualmin.com result
No more discussion here, Will check with hosting provider once, I just mailed the company.
You need to also setup your DKIM, DMARC, SPF, MX and ARC records correctly
I’d suggest he gets an smtp instead and can you please show him how to configure the server to use smtp instead of send mail?
DKIM, DMARC, SPF, and MX records will not open port 25. Without port 25, everything else is irrelevant. The only option for sending mail without port 25 is using a relay service (such as Amazon SES, Mailgun, Sendgrid, etc.).
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My problem is solve after restarting/rebooting the server, We can close discussion now 
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