This article lists Revizto network requirements.
If your company is using a firewall, ports 80 and 443 have to be opened for Revizto. And the following domains must be allowed:
If your company is using a proxy server, you need to set up proxy server settings in Revizto. In the login window click the "Proxy server settings" in the top right corner of the screen and fill in all required information.
To ensure that your mail server does not filter out notifications from Revizto, add "firstname.lastname@example.org" to the safe senders list.