Quite a lot of the issues I have seen surrounding connecting to servers in hosting modules or doing WHOIS checks are likely down to the end-user's local configuration.
I suspect a lot of them are due to over zealous firewalls implemented by shared hosts (blocking non-standard outbound ports, or more likely just using the CSF defaults).
When writing the documentation for shared host installation/documentation for integrations - it could be worth mentioning to try and avoid those kinds of issues being raised when it's nothing to do with the codebase.
Quite a lot of the issues I have seen surrounding connecting to servers in hosting modules or doing WHOIS checks are likely down to the end-user's local configuration.
I suspect a lot of them are due to over zealous firewalls implemented by shared hosts (blocking non-standard outbound ports, or more likely just using the CSF defaults).
When writing the documentation for shared host installation/documentation for integrations - it could be worth mentioning to try and avoid those kinds of issues being raised when it's nothing to do with the codebase.