checkdmarc-web-frontend

The frontend project to the checkdmarc web application. The backend code is hosted in a separate project.

A live version can be found at domaincheckup.net.

Features

Why create or use this when there are already so many other websites that check SPF and DMARC records?

• Responsive, mobile-first UI using Bootstrap
• Can be installed as a Progressive Web Application (PWA) on mobile devices and computers
• Provides all details from the checkdmarc library and CLI tool on a single page
  • DNSSEC validation
  • SPF
    • Record validation
    • Counting of DNS lookups and void lookups
    • Counting of lookups per mechanism
  • DMARC
    • Validation and parsing of DMARC records
    • Shows warnings when the DMARC record is made ineffective by pct or sp values
    • Checks for authorization records on reporting email addresses
  • BIMI
    • Validation of the mark format and certificate
    • Parsing of the mark certificate
  • MX records
    • Preference
    • IPv4 and IPv6 addresses
    • Checks for STARTTLS (optional; currently disabled on the production website)
    • Use of DNSSEC/TLSA/DANE to pin certificates
  • MTA-STS
    • Record parsing and validation
  • SMTP TLS Reporting (TLSRPT)
    • Record and policy parsing and validation
  • SOA record parsing
  • Nameserver listing
• No sales pitches
• Fully open source

Running the web app locally

First, setup the backend server. Then, create a new python virtual environment and run pip install -U -r requirements.txt.

Configure the frontend using environment variables by copying example.env to .env and change the values.

Use the supplied example systemd .service file to create a systemd service, and use the example nginx.conf file to configure NGINX to serve it.

Pull requests welcome

I have't done much frontend dev work, so any help is welcomed.