Which security tools are required for these tests?

This skill utilizes standard industry tools including Nmap (with SMTP scripts), Netcat, Hydra, smtp-user-enum, and the Metasploit Framework.

Can I use this for automated user enumeration?

Yes, it provides specific commands for tools like smtp-user-enum and Metasploit modules to automate the identification of valid email accounts.

How does it test for open relay vulnerabilities?

It uses a combination of manual Telnet commands and automated Nmap scripts to attempt sending emails to external domains through the target server.

Does it provide remediation advice for discovered vulnerabilities?

Yes, the skill includes specific hardening recommendations for administrators, such as disabling VRFY/EXPN, enforcing TLS, and implementing rate limiting.

What protocols and ports does this skill support?

The skill supports standard SMTP testing across ports 25, 465 (SMTPS), 587 (Submission), and 2525, covering both STARTTLS and direct SSL connections.

SMTP Penetration Testing

Name: SMTP Penetration Testing
Author: claudiodearaujo

byclaudiodearaujo

0•

安全与测试

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

This skill provides a systematic framework for evaluating the security posture of mail servers. It guides users through the entire penetration testing lifecycle, from initial service discovery and banner grabbing to advanced techniques like user enumeration (via VRFY/EXPN/RCPT), open relay testing, and credential brute forcing. By integrating standard security tools like Nmap, Hydra, and Metasploit, it helps security professionals identify misconfigurations and provides actionable remediation steps to harden email infrastructure against spoofing and unauthorized access.

主要功能

01Automated service discovery and MX record analysis

02TLS/SSL security configuration auditing and banner analysis

03Multi-method user enumeration using VRFY, EXPN, and RCPT TO

04Credential brute force testing for weak SMTP authentication

050 GitHub stars

06Comprehensive open relay testing and exploitation simulation

使用场景

01Performing credential security assessments on mail infrastructure

02Auditing corporate mail servers for security misconfigurations and open relays

03Validating SPF, DKIM, and DMARC record implementations to prevent spoofing

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add claudiodearaujo/sistema-de-narra-o-de-livro-front smtp-penetration-testing

For use in Claude.ai and ChatGPT

Download Skill

主要功能

01Automated service discovery and MX record analysis

02TLS/SSL security configuration auditing and banner analysis

03Multi-method user enumeration using VRFY, EXPN, and RCPT TO

04Credential brute force testing for weak SMTP authentication

050 GitHub stars

06Comprehensive open relay testing and exploitation simulation

使用场景

01Performing credential security assessments on mail infrastructure

02Auditing corporate mail servers for security misconfigurations and open relays

03Validating SPF, DKIM, and DMARC record implementations to prevent spoofing

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add claudiodearaujo/sistema-de-narra-o-de-livro-front smtp-penetration-testing

For use in Claude.ai and ChatGPT

Download Skill