"Server rejected the connection" but server is healthy

[Matthew Joyce]

"Server rejected the connection" but the server is healthy

To Reproduce
Steps to reproduce the behavior:

1. Install SSLyze 5.2.0
2. Run the following command 'python -m sslyze --slow_connection vanderpump.co.uk'
3. See error "Server rejected the connection"

Occasionally the certificate information is reported correctly, but the cipher suite tests don't execute with "Server rejected the connection".

Expected behavior
Sslyze should connect to the server and run tests.

Python environment :

• OS: Ubuntu 22.04, Python version: 3.10
• OS: OSX 11.7.10, Python 3.8.2

Additional context
vanderpump.co.uk server is healthy and browser connects OK.
OpenSSL -connect works fine.