If you are using the various online applications provided by INAIL, INPS, Telemaco, Webtelemaco, Comunica, etc. and the website does not work by submitting the following reports: The operation failed, failed connection, test the connection, check if you have typed the correct site Internet, the requested server is not online, etc.

Then the problem is your firewall that blocking the communication, because the communication protocol is made by xml string and most firewalls deemed to potentially dangerous.

So to solve this problem we need to create an appropriate rule on the firewall to unblock communication with all protocols to address: 80.82.3.32 - dominio02b.inps.it - 213.175.0.0/255.255.0.0