Quick answer: Check the service page in the Client Area first — if a reverse DNS / PTR field is available for your IPv4, set it there and it applies automatically. Otherwise open a support ticket stating the IP address and the exact hostname; make sure the hostname's A record already points at that IP.
Overview
PTR records for Cloud2Y IP space are managed on our side, so this is one of the few DNS changes that goes through us rather than your registrar. The request itself is simple — the checklist below exists to make it a one-round-trip change. Background on what a PTR does: How to set reverse DNS / PTR record.
Before you start
- The IP address (from the service page under My Services).
- The hostname, e.g.
mail.yourdomain.com, with its A record already resolving to that IP. - The hostname should match what your mail server announces in HELO/EHLO.
Step-by-step guide
- Open the service in the Client Area and look for a reverse DNS / PTR option; if present, enter the hostname and save — done.
- If not present, go to Support Tickets → Open Ticket (technical department).
- State it in one line per IP:
Please set PTR for 203.0.113.10 to mail.yourdomain.com - After confirmation, verify:
dig +short -x 203.0.113.10
Common issues
- A record missing: we cannot sensibly set a PTR to a hostname that does not resolve back — create the A record first.
- Multiple IPs, one request: list every IP-to-hostname pair explicitly to avoid ambiguity.
- Typo in the hostname: PTR values are literal; double-check spelling before submitting.
When to contact support
This whole article is the support path — use a ticket for any PTR on additional IPs, changes after a hostname move, or IPv6 reverse delegation questions.
Frequently asked questions
What should a PTR request ticket contain?
One line per address: the IP and the exact hostname, for example "Set PTR for 203.0.113.10 to mail.yourdomain.com", with the matching A record already resolving to that IP.
How do I verify the PTR after it is set?
Run dig +short -x YOUR.IP from any machine and confirm it returns your hostname, then check the hostname resolves back to the same IP so forward and reverse DNS agree.
Can I get PTR records for additional IPs?
Yes, PTR records can be set for every public IPv4 assigned to your service; list each IP-to-hostname pair explicitly in the ticket so nothing is ambiguous.
Related articles
- How to set reverse DNS / PTR record
- How to check IP reputation
- How to set up an email server on a VPS
Need a hand? Contact Cloud2Y support →
