Individual skill
implementing-dmarc-dkim-spf-email-security
Configures SPF, DKIM, and DMARC DNS TXT records to authenticate outbound email, prevent domain spoofing, and enforce a rejection/quarantine policy on unauthenticated mail, including auditing a domain's current DNS state. Use when hardening a domain's email security posture or defending against phishing and spoofing attacks.
skills/implementing-dmarc-dkim-spf-email-security/SKILL.md
Source commit 54a798831d2266a3ca61ce68a7acb80b81160d57
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- Last checked
- Nov 9, 2026
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- 35,926
- Repository last updated
- Aug 31, 2026
- License
- Apache-2.0
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- ai-agents Repository topic
- claude-code Repository topic
- cybersecurity Repository topic
- incident-response Repository topic
- mitre-attack Repository topic
- penetration-testing Repository topic
- red-team Repository topic
- security Repository topic
- cloud-security Repository topic
- malware-analysis Repository topic
- phishing Declared skill tag
- email-security Declared skill tag
- social-engineering Declared skill tag
- dmarc Declared skill tag
- awareness Declared skill tag
- dkim Declared skill tag
- spf Declared skill tag
- dns Declared skill tag
- engineering Derived category
- security Derived category
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LICENSEasset · 11,255 bytesSKILL.mdcore · 4,574 bytesSKILL.mdcore · 4,574 bytesSKILL.mdcore · 4,574 bytesassets/template.mddoc · 2,595 bytesreferences/api-reference.mddoc · 1,412 bytesreferences/standards.mddoc · 2,930 bytesreferences/workflows.mddoc · 3,205 bytesscripts/agent.pyruns · 5,572 bytesscripts/process.pyruns · 20,891 bytes
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# Implementing DMARC, DKIM, and SPF Email Security
## Overview
SPF, DKIM, and DMARC form the three pillars of email authentication. Together they prevent domain spoofing, validate message integrity, and define policies for handling unauthenticated mail. Proper implementation drastically reduces phishing attacks that impersonate your organization's domain.
## When to Use
- When deploying or configuring implementing dmarc dkim spf email security capabilities in your environment
- When establishing security controls aligned to compliance requirements
- When building or improving security architecture for this domain
- When conducting security assessments that require this implementation
## Prerequisites
- DNS management access for your domain