# nicanorflavier/spf-dkim-dmarc-simplified

Email security is a key part of internet communication. But what are SPF, DKIM, and DMARC, and how do they work? This guide will explain it all in simple terms to make these concepts clearer.

Repository: https://github.com/nicanorflavier/spf-dkim-dmarc-simplified
Canonical: https://ross.abutalabs.com/products/spf-dkim-dmarc-simplified
License Family: other
Last push: 2024-06-21T18:09:12+00:00

## Health v2 (maintenance only)
Score: 24/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 57
- inputs: {"age_days": 807, "days_push": 803, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1243, forks 35 (observed 2026-08-28T04:04:06.597504+00:00)

## What it is
A plain-language guide explaining SPF, DKIM, and DMARC email authentication standards and how they protect domains from spoofing and phishing. It is a documentation/tutorial repository rather than runnable software.

## Use cases
- understand how SPF DKIM and DMARC work
- fix emails going to spam folder
- set up email authentication for my domain
- learn why transactional emails fail DMARC
- prevent domain spoofing and phishing
- explain email security to my team
- check my domain's SPF DKIM DMARC status

## When to choose
- you need a beginner-friendly explanation of email authentication
- you send transactional emails and want them to reach the inbox
- you're configuring DNS records for SPF, DKIM, or DMARC and want context

## When to avoid
- you need a tool or library to generate or validate DNS records
- you want automated DMARC report analysis
- you need an implementation, not an explanation

## Facets
- artifact type: learning-resource
- maturity: stable
- function: documentation, security, email
- domain: email, security, documentation, tutorials
- platform: -
- tags: email-authentication, spf, dkim, dmarc, guide, deliverability, anti-phishing, web-server

## Member repositories
- nicanorflavier/spf-dkim-dmarc-simplified (main) score 24

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:06.597504+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T05:08:20.686784+00:00, confidence not recorded.
  - readme: https://github.com/nicanorflavier/spf-dkim-dmarc-simplified (fetched 2026-08-28T04:04:06.597504+00:00, sha a86710516a32)
- Data as of 2026-08-30T08:39:29.467469+00:00.