mail/p5-Mail-DMARC-Iterator 0.014 OpenBSD

This module can be used to validate mails against DMARC policies like specified in RFC 7208. The main difference to Mail::DMARC is that it does no blocking operations. Instead it implements a state machine where user input is fed into and instructions what the machine wants is returned. The state machine only wants the data from the mail and the result of specific DNS lookups. With each new data fed into the machine it will provide new information what it needs next, until it finally has enough input and returns the final result. Because of this design the DMARC policy validation can be easily integrated into event-driven programs or coupled with a specific DNS resolver.