My Reverse DNS (PTR) Record Is Not Working

1. Go to Network > Reverse DNS and verify the PTR record is set correctly.
2. Check the status column:
   • Unset — no PTR record configured. Click Edit to set one.
   • Propagating — the record was just changed. DNS propagation can take up to 24 hours.
   • Propagated — the record is live and resolving correctly.
3. Verify your PTR value is a valid fully qualified domain name (e.g., mail.yourdomain.com).
4. The domain in your PTR record should have a matching A record pointing back to your IP (forward-confirmed reverse DNS).
5. Click Reload to force a propagation check.
6. Test from your server: dig -x YOUR_SERVER_IP to see what resolves.

Proper rDNS is essential for email servers. Most providers will reject email from IPs without matching PTR records.