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checkdmarc

A parser for SPF and DMARC DNS records

py-emailprotections

Python library for SPF, DKIM, and DMARC email protections.

spf-validator

Validates Sender Policy Framework (SPF) strings to ensure they are formatted correctly.

trustymail

Scan domains and return data based on trustworthy email best practices

sender-policy-flattener

Compact large SPF chains into flat blocks of IP addresses

sesparser

AWS SES Email Parser

cfspflat

SPF Flattener with automatic updates in Cloudflare

setmy53dns

Updates a hosts Route53 record for use on reboot or waken from hibernation

espoofer

An email spoofing testing tool that aims to bypass SPF/DKIM/DMARC and forge DKIM signatures.🍻

r53spflat

Automated Route53 SPF Flattener