5.7.25 The IP address sending this message does not have a PTR record

The receiving server wants the sending server’s IP address to map back to a hostname (a reverse DNS or PTR record) and found none, or one that does not match.

5.7.25 The IP address sending this message does not have a PTR record

Permanent: retrying will not help

The receiving server wants the sending server’s IP address to map back to a hostname (a reverse DNS or PTR record) and found none, or one that does not match.

Usual causes

Sending from a server or IP address with no reverse DNS set up.
The reverse DNS name does not resolve back to the same IP address.

What to do

If you run your own mail server, ask your hosting provider to set a PTR record for the IP address.
If you use an email service, this should not happen. Tell the service the full bounce text.

Usually the fault of: sender.

Common questions.

What does 5.7.25 mean?

The receiving server wants the sending server’s IP address to map back to a hostname (a reverse DNS or PTR record) and found none, or one that does not match.

Will retrying fix 5.7.25?

No. It is a permanent failure, so retrying the same message will not help, and repeated attempts can hurt your sending reputation. Fix the cause first.

How do I fix 5.7.25?

If you run your own mail server, ask your hosting provider to set a PTR record for the IP address. If you use an email service, this should not happen. Tell the service the full bounce text.

Other codes: 5.1.1 · 5.1.2 · 5.1.3 · 5.1.6 · 5.2.1 · 5.2.2 · 5.2.3 · 5.3.4 · Decode a whole bounce message

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