ThunderSec is a security plugin for Mozilla Thunderbird that creates several pieces of additional security functionality, including DNSBL, RBL, SURBL, DKIM and SPF.

Express middleware that handles SPF requests

Correct configuration for mail server on Ubuntu with spf and dkim authentication

An implementation of the Sender Rewriting Scheme in pure Rust.

Shell Script

Docker Postfix SMTP Relay with support for rewriting canonical names

This is a docker environment for sending and receiving mail with bind and postfix.

Scripts to prevent a mail server from generating backscatter

A puppet module to configure python-postfix-policyd-spf

SPF (Sender Policy Framework) in a Postfix

Resolve all include: markers in SPF-formatted DNS records down to a flat list of IPs.

A simple tool to check SPF and DMARC for one or more domains

Tool for monitoring and analysing DMARC aggregate reports for a domain.

Sender Policy Framework

📧 Parse SPF (sender policy framework) records

RFI for DMARC Analytics and Reporting services.

This module provides a simple interface to validate if an IP address is a valid sender for a given email domain.

📩 Parse and generate SRS (Sender Rewriting Scheme) email addresses. (Abandoned)

simple application to scan spf of given domains and save them

Setup guide for Office 365 Administrators who are unable to use ATP to configure SPF, DKIM and DMARC.