Unable to login rt from production server

When I run the rt login python code from the production server it is not working. showing the following error
“requests.exceptions.ConnectionError: HTTPConnectionPool(host=‘rt.reflectionsinfo.com’, port=80): Max retries exceeded with url: /?user=username&pass=password (Caused by NewConnectionError(’<urllib3.connection.HTTPConnection object at 0x7f374bdb1650>: Failed to establish a new connection: [Errno -2] Name or service not known’))”

The same code is working fine from my local system

Can someone please help me to solve this issue?

Is your prod server able to access “http://rt.reflectionsinfo.com/” and know about it in DNS?