Added support for SPF PTR

postalsys / mailauth

Command line utility and a Node.js library for email authentication

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Closed andris9 closed 2 years ago

andris9 commented 2 years ago

Support for ptr SPF mechanism
Use DNS query limits for SPF as defined in rfc7208#section-4.6.4. DNS queries for SPF are limited to 10.
New option maxVoidCount and cli argument --max-void-lookups / -z (defaults to 2)