Which tools are required to use this skill effectively?

It leverages standard security tools including Nmap, Netcat, Hydra, smtp-user-enum, and the Metasploit Framework.

Can this skill test for email spoofing protections?

Yes, it includes procedures for analyzing SPF, DKIM, and DMARC records to evaluate a domain's resistance to spoofing.

How does it handle user enumeration?

It guides the user through multiple methods including VRFY, EXPN, and RCPT TO commands to identify valid email addresses on a target server.

What is the primary purpose of this skill?

It provides specialized workflows and commands for security professionals to identify and remediate vulnerabilities in SMTP mail servers.

Is this skill safe for production environments?

While useful for auditing, penetration testing can be intrusive; always ensure you have written authorization and follow ethical guidelines before testing any server.

SMTP Penetration Testing

Name: SMTP Penetration Testing
Author: claudiodearaujo

byclaudiodearaujo

Security & Testing

Conducts comprehensive security audits of SMTP servers to identify vulnerabilities like open relays, user enumeration flaws, and weak authentication.

About

The SMTP Penetration Testing skill equips Claude with specialized knowledge and workflows for assessing the security posture of mail servers. It provides a structured methodology ranging from initial service discovery and banner grabbing to advanced exploitation techniques such as identifying open relays and brute-forcing credentials. Ideal for security researchers and system administrators, this skill facilitates the identification of misconfigurations and provides clear remediation steps to harden Simple Mail Transfer Protocol (SMTP) infrastructure against common attack vectors.

Key Features

Rigorous open relay testing and exploitation verification
0 GitHub stars
Comprehensive service discovery and SMTP banner grabbing workflows
Multi-method email user enumeration (VRFY, EXPN, and RCPT TO)
Automated brute-force authentication testing with tools like Hydra
Security analysis for TLS/SSL configurations and SPF/DKIM/DMARC records

Use Cases

Conducting authorized security audits on corporate mail infrastructure
Verifying the effectiveness of server hardening and anti-spoofing policies
Identifying sensitive information disclosure through SMTP banner configurations

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add claudiodearaujo/izacenter smtp-penetration-testing

For use in Claude.ai and ChatGPT

Download Skill

GitHub