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Orange (orange.fr and wanadoo.fr)

OFR_107: no reverse DNS for your IP

Orange refused your mail because your sending IP has no PTR record (reverse DNS). The PTR name must resolve back to the same IP.

Orange
Provider
Sources checked
By , email deliverability consultant
Author

At a glance

Code
OFR_107
Who has to act
The sender. The fix is on the sending side: your domain, your server or your list.

What it means

Code 107 means the IP address your server sends from is missing a DNS PTR record, also called rDNS or reverse DNS. Orange requires one for every sending IP. Its resolution asks for a valid PTR record that points to your domain, and adds a second condition: the sending IP must match the IP address of the host name given in the PTR record, so the name has to resolve forward to the same address. The PTR record is set by whoever controls the IP range, usually your host or ISP.

Common causes

  • No PTR record was created for the sending IP.
  • The server moved to a new IP and reverse DNS was not set up for it.
  • The reverse zone is not served correctly by its name servers.

How to fix it

  1. 01Ask the owner of the IP range to create a PTR record pointing to a host name in your domain.
  2. 02Make that host name resolve to the same sending IP.
  3. 03If you changed DNS recently, allow time for caches to expire before retrying; Orange notes that TTLs are typically up to 24 hours.

Sources

What this page rests on, checked on 20 Oct 2026. The explanation is ours; the reply text is the server's.

  1. OFR_20xInvalid HELO/EHLO name.Orange refused your mail because the HELO/EHLO name your server announces is not valid: it must be a fully qualified domain name that resolves.Orange
  2. 554No reverse DNS for your IP.GMX refused the connection because the IP address of your mail server has no PTR record, so it is not tied to any domain name in DNS.GMX, WEB.DEPermanent
  3. 554No reverse DNS for your IP.IONOS refused your mail because the IP address of your mail server has no domain name assigned to it in DNS (no PTR record).IONOSPermanent

Further reading

All 20 Orange codesEvery code in the wikiPaste your own bounce

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