Sometimes the network check is reporting incorrect results. A meaningful test from the VM itself would be a
curl -v -k https://esrs3.emc.com
curl -v -k https://esrs3-core.emc.com
if these two work (the second will probably end in a SSL handshake failure, but SSL handshake will at least be started), please follow fix 1 in KB article 503235 to be able to skip the network check. There will be an option in the GUI to skip the network check in a future version, unfortunately not in 3.32 yet.
If provisioning does not work, indicating a real issue with the network connectivity, please open a SR with support to get assistance.