Pushy Trial / Pushy Pro require the following outgoing hostname & port combinations to be whitelisted in your network firewall for devices to receive notifications from Pushy:
*.pushy.me:443 *.pushy.io:443
Note: Please notice the * character which indicates a wildcard subdomain whitelist, and the two separate domains pushy.me and pushy.io.
If your organization has strict firewall requirements, we can provide a static IP address for $50/m. Please contact us for more info.
You may also consider Pushy Enterprise, a dedicated deployment of Pushy which runs on a static IP, and includes other benefits such as 24/7 support & an uptime SLA guarantee.