ERROR: SSL handshake to failed

Issue

$ yum repolist
Errors occurred while trying to connect to the remote servers. 
xmlrpc.cln.cloudlinux.com: 
<class 'OSError'> 
Unable to connect to the host and port specified 

Errors occurred while trying to connect to the remote servers. 
xmlrpc.cln.cloudlinux.com: 
<class 'OSError'> 
Unable to connect to the host and port specified 

ERROR: SSL handshake to <RetryServer for ipv6.xmlrpc.cln.cloudlinux.com/XMLRPC/> failed 

            This could signal that you are *NOT* talking to a server 
            whose certificate was signed by a Certificate Authority 
            listed in the /usr/share/rhn/CLN-ORG-TRUSTED-SSL-CERT file or that the 
            CLN-ORG-TRUSTED-SSL-CERT file is invalid. 
Unable to check license status and register server. Use --force to override 
Errors occurred while trying to connect to the remote servers. 
xmlrpc.cln.cloudlinux.com: 
<class 'OSError'> 
Unable to connect to the host and port specified

Environment

• CloudLinux

Solution

Client configured dnf to use a squid proxy, and it's working now, so there must be an issue with the server being able to reach the CLN repos.

Cause

Client unable to reach CLN

Useful links

N/A