Steps to reproduce:

1. Monitoring two Moodle servers on load balancing (port 443).
2. Zabbix server hits the two servers but not the Virtual IP (load balance).
3. Step on web scenario is configured to monitor each server separately, the URL has the server IP and header Host: is passed by Headers parameter on step. See screenshot.
4. Follow redirects is enabled to reach the next page with code 200.

Result:

As the load balancing IP is not accessible by zabbix server, the step fails by timeout.

Expected:
I think the expected should be the Header Host following the redirects.