Individual skill
email-security
DMARC/SPF/DKIM check, email spoofing, SMTP test, and security header analysis
recon/email-security/SKILL.md
Source commit 1260244136edc6ae698d76d3d526f503e322778d
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
Install this skill
Choose an agent in your Stack or copy a command below. Commands fetch the pinned commit and copy only this skill directory. Existing destinations are refused. Copying a command does not install anything.
An install command is unavailable: current rules, complete repository and skill scans, an eligible behavior level and a permitted license are required.
Repository context
- Repository stars (not skill ratings)
- 1,356
- Repository last updated
- Nov 7, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- bug-bounty Repository topic
- cloud-security Repository topic
- firebase-hacking Repository topic
- hermes-agent Repository topic
- jwt-attacks Repository topic
- offensive-security Repository topic
- penetration-testing Repository topic
- reconnaissance Repository topic
- red-team Repository topic
- security-automation Repository topic
- email Declared skill tag
- spf Declared skill tag
- dkim Declared skill tag
- dmarc Declared skill tag
- spoofing Declared skill tag
- smtp Declared skill tag
- recon Declared skill tag
- security Derived category
- testing Derived category
Files and excerpt
File metadata and permitted, redacted excerpts come from the recorded scan. Source links are pinned to that commit.
Browse files
Read excerpt
# Email Security -- DMARC, SPF, DKIM
## When to Use
- During passive reconnaissance (Phase 1)
- After initial DNS enumeration
- DMARC p=none means the domain can be totally spoofed
- Critical for identifying phishing/business email compromise risks
## DMARC/SPF/DKIM Check Commands
```bash
# SPF
dig +short TXT $target | grep "v=spf1"