SpamRATS No PTR
noptr.spamrats.com
Operated by SpamRATS
Avg removal time
24–48 hours after PTR is set
This blacklist significantly affects deliverability at many mail servers and filters.
About SpamRATS No PTR
SpamRATS No PTR lists IP addresses that lack a valid reverse DNS (PTR) record. A missing PTR record is a red flag for legitimate mail servers and causes delivery failures with many mail systems.
Why am I listed?
Any IP address that does not have a PTR record set in DNS is eligible for listing. Legitimate mail servers are expected to have matching forward and reverse DNS.
How to get delisted
Follow these steps in order to request removal from SpamRATS No PTR.
- 1
Contact your hosting provider or data center to add a PTR (reverse DNS) record for your IP.
- 2
The PTR record should resolve to a hostname that forward-resolves back to the same IP (forward-confirmed reverse DNS).
- 3
Typical format: mail.yourdomain.com or smtp.yourdomain.com.
- 4
After the PTR is set and propagated, submit a removal request at spamrats.com.
- 5
Verify the PTR record with: dig -x YOUR_IP
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