Module iprev 

Reverse IP address verification (iprev, RFC 8601 Section 3).

The iprev check confirms that the SMTP client’s IP address has a PTR record whose name resolves back to the same address. Run it with MessageAuthenticator::verify_iprev and report the outcome with AuthenticationResults::with_iprev_result.

Structs

IprevOutput

The outcome of an iprev check (RFC 8601 Section 3), produced by MessageAuthenticator::verify_iprev.

Enums

IprevResult

An iprev result code, as defined in RFC 8601 Section 3.