We have some customers still using dial-up in remote locations. After disabling HTTP and forcing them to use HTTPS, some of those offices have indicated they cannot connect.
I have searched online and only confirmed my prior knowledge so far - dial-up uses PSTN to connect to the internet and should be able to support HTTP/HTTPS. The only possible causes I can think of are platform supportability for our current TLS cipher suite. However, the customer is using a recent version of our software and working on Windows 7. LMK