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SMTP Penetration Testing

85 / 100 · Low risk

Fine to try.

By Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI (GitHub) · coding · 512 stars · scanned at commit c4a059b

This skill should be used when the user asks to "perform SMTP penetration testing", "enumerate email users", "test for open mail relays", "grab SMTP banners", "brute force email credentials", or "assess mail server security". It provides comprehensive techniques for testing SMTP server security.

Works with any agent that supports SKILL.md skills.

What this skill can do

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'smtp-penetration-testing' ] || [ -L ~/.agents/skills/'smtp-penetration-testing' ]; then echo 'A skill folder named smtp-penetration-testing already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI' "$d" && git -C "$d" checkout --quiet 'c4a059bbf7a8d6b2162071f0fbfe74053faa6d20' -- '.agent/skills/smtp-penetration-testing' && mkdir -p ~/.agents/skills && cp -R "$d"/'.agent/skills/smtp-penetration-testing' ~/.agents/skills/'smtp-penetration-testing' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'smtp-penetration-testing' ~/.claude/skills/'smtp-penetration-testing' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

Badge for your README

The badge for Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI shows the score of its lowest-scoring skill.

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Score history

Also found in

Identical copies of this skill exist at:

• Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI/tests/manual-repair-test/.agent/skills/smtp-penetration-testing
• Dokhacgiakhoa/Agent-Skills-4-Vibe-Coding-CLI/tests/manual-test-project/.agent/skills/smtp-penetration-testing