Part of MikeNetworks®

Free tool

Does this address have a proper reverse name?

Mail servers look up the PTR of the sending address and then check that the name points back. A missing or mismatched reverse name is one of the most common reasons mail from a new server is refused.

What this checks

PTR and forward-confirmed reverse DNS

A PTR record lives in the reverse zone (in-addr.arpa or ip6.arpa) of the network that owns the address, so it is set by your hosting or access provider, not in your domain's DNS. Receiving mail servers look it up, then resolve the name they got; when that returns the same address, the reverse is "forward-confirmed". Spam filters treat a missing or unconfirmed reverse as a bad sign, and some servers reject outright.

Related tools

More in this set

  • DNS lookup Any record type of any name, with TTLs.
  • DNS propagation Has your change reached the public resolvers yet?
  • Nameserver check Do all nameservers answer, authoritatively, with the same serial?
  • DNSSEC check DS at the parent, DNSKEY in the zone, and whether they match.
  • Domain info Registrar, expiry date, status and nameservers from the registry.

All tools Glossary

Servers in Luxembourg

A server on the network these tools run from

KVM servers on our own hardware in LuxConnect DC1.1, reverse DNS from the panel, AS199839.

See VPS plans