Every VPS is assigned at least one public IP address. Virtualizor lets you view the IPs assigned to your VPS and configure reverse DNS (rDNS), also called a PTR record. Reverse DNS is required if you plan to send email from your VPS, and is used by mail servers and anti-spam systems to verify that your IP address belongs to your domain.

How to view the IP addresses assigned to your VPS

1. Log in to the Virtualizor Enduser Panel.
2. Click List VPS and open the management page for your VPS.
3. Click the IPs icon in the management toolbar. A list of all IP addresses assigned to the VPS will appear, including the primary IP and any additional IPs.

What is reverse DNS (rDNS / PTR record)?

A standard DNS record maps a domain name to an IP address (e.g. mail.yourdomain.com → 203.0.113.10). A reverse DNS record does the opposite: it maps an IP address back to a hostname (e.g. 203.0.113.10 → mail.yourdomain.com).

This PTR record is used by receiving mail servers to confirm that the server sending email is authorised to send on behalf of the domain. Without a correctly configured PTR record, your outgoing email is likely to be rejected or flagged as spam by major mail providers.

How to set up reverse DNS for your IP

1. On the IP address list page, locate the IP address for which you want to set rDNS.
2. In the rDNS / PTR field next to that IP, enter the fully qualified hostname that the IP should resolve to — for example, mail.yourdomain.com.
3. Make sure your domain's forward DNS A record for that hostname already points to this IP address. The PTR record and the A record must match for proper validation.
4. Click Save or Update.
5. Allow 24 to 48 hours for the rDNS change to propagate across the internet. You can verify it using a tool such as MXToolbox Reverse Lookup or by running nslookup your-ip-address from a terminal.

If additional IPs are assigned

If TPC Hosting has assigned multiple IP addresses to your VPS, each IP will appear as a separate row in the IP list. You can set an individual PTR record for each IP address independently.

When rDNS matters

• Running a mail server: this is the most common reason to configure rDNS. Services such as Gmail, Outlook, and Yahoo Mail check PTR records when deciding whether to accept or reject incoming messages.
• Anti-spam compliance: many RBL (Real-time Blackhole List) operators require a valid PTR record before removing an IP from their blocklists.
• General best practice: even if you do not run a mail server, having a meaningful PTR record (such as vps1.yourdomain.com) makes your server easier to identify in logs and network diagnostics.

Troubleshooting

• The rDNS field is missing or greyed out: PTR record management may be restricted to TPC Hosting administrators for your plan. Contact TPC Hosting support and provide your VPS IP and the desired PTR hostname — they can set it on your behalf.
• rDNS shows the old value after 48 hours: flush your local DNS cache and test from an external tool. If the old value still appears, contact TPC Hosting support to confirm the change was applied at the network level.
• Outgoing email is still being rejected after setting rDNS: PTR records are one of several anti-spam requirements. Also check that you have configured SPF, DKIM, and DMARC records for your domain.