Unable to access appian server using FQDN name

I have successfully installed appian 17.2 server and I am able to start it successfully. But I am unable to access the server using computers FQDN name, but I am able to access server using Computer's IP address. I have configured below property correctly as per steps given in installation process.

"conf.suite.SERVER_AND_PORT="  correctly as per the steps given in forum.

 

Note: I am able to access server using IP address of machine but not with FQDN name.

 

Please help me out. Thanks in advance.

 

 

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