server reputation checker
Use this working tool to inspect structure, plan credits, or query a domain without confusing that action with mailbox verification.
Server identity, answered.
What does the server identity score measure?+
It summarizes public DNS identity signals such as reverse DNS, forward-confirmed reverse DNS, and domain MX routing. It is not a complete IP reputation score.
What is reverse DNS?+
Reverse DNS maps an IP address to a hostname using a PTR record. Many receiving systems expect mail servers to have a consistent identity.
What is forward-confirmed reverse DNS?+
It checks whether the hostname returned by PTR points back to the same IP in an A record. This helps identify mismatched server identity.
Does a passing score guarantee delivery?+
No. Delivery also depends on authentication, reputation, complaints, bounces, message content, consent, and recipient policy.
Why is PTR important for email servers?+
A consistent PTR hostname gives receiving systems a clearer server identity. Missing or generic PTR records can be a configuration warning.
Can I check a domain and an IP?+
Yes. A domain is resolved to up to three public IPv4 addresses; an IP is checked directly.
Why can a domain have several scores?+
A domain may send from multiple servers. The checker reports each returned IPv4 address so you can investigate differences.
Does this tool check IPv6?+
The current public checker evaluates IPv4 addresses. IPv6 identity checks can be added separately.
What does no MX record mean?+
It means no explicit mail-exchange record was returned for the domain. It does not prove that every mailbox is invalid.
Does the checker contact my mail server?+
No. It uses public DNS lookups only and does not open an SMTP session or send email.
How often should I run this check?+
Run it after changing mail infrastructure, moving providers, or seeing bounce and reputation changes. Re-run after DNS propagation.