A set of browser-based DNS tools for DigitalOcean Community.
A simple, open source Mac OS app for presentations on low-contrast monit...
Artisanal inbound emails for every web app using nodejs
Hermes Secure Email Gateway is a Free Open Source Ubuntu 20.04 LTS Serve...
Library containing Email related implementations in Elixir : dkim, spf, ...
Another utility to analyze state of deployment of security-related email...
Postfix SRS forwarding agent
Simple library to check an IP address against a domain's SPF record
ThunderSec is a security plugin for Mozilla Thunderbird that creates sev...
Setup guide for Office 365 Administrators who are unable to use ATP to c...
Compact large SPF chains into flat blocks of IP addresses
Ruby SPF Parser
Parse SPF record and determine if client IP is allowed to send email.