How to Manage VPS IPs, Reverse DNS (PTR) and Null-Routing
The Networking tab shows every IP address assigned to your VPS and lets you manage reverse DNS and null-routing. Setting reverse DNS is especially important if you plan to send email from your server.
Viewing your IP addresses
Open your VPS in the Client Area and go to the Networking tab. You’ll see your public IPv4 and IPv6 addresses, which one is the Main IP, and their reverse DNS and null-route status.
Setting reverse DNS (PTR)
Click Set rDNS next to an IP and enter the hostname you want it to resolve to (for example, mail.yourdomain.com). Reverse DNS maps the IP back to a name and helps mail servers trust messages sent from your VPS.
Null-routing
The Null Route action drops all traffic to an IP at the network edge. It’s an emergency measure – for example, to stop an attack targeting a single address – and can be reversed when the situation clears.
JetHost Experts Tip
If email from your VPS lands in spam, matching reverse DNS and forward DNS (your PTR host resolves back to the same IP) is one of the first fixes to check.
Need More Help?
The Networking tab puts reverse DNS, IP details and null-routing in your hands. If you get stuck, the JetHost team is available 24/7 and usually answers in under five minutes – just contact us and we’ll help you sort it out. Explore our other VPS tutorials to get the most out of your server.
