Last Updated: Mar 8, 2023
For a quick, passive check of an external email gateway, web-based tools like MxToolbox allow administrators to test their domain's SMTP server for open relays securely without downloading any software. How to Secure Your SMTP Server
To conduct comprehensive, secure, and accurate vulnerability assessments on email infrastructure, security teams utilize modern tools that receive regular updates and support sophisticated scanning techniques. 1. Nmap (Network Mapper) Smtp Scanner Hscan 1.2 Download
: Hscan 1.2 was written years ago. It lacks updates, lacks support for modern secure protocols (like TLS 1.3), and may crash on modern operating systems. For a quick, passive check of an external
In legitimate penetration testing, scanners like Hscan are used to audit mail servers to ensure they do not permit unauthorized relaying or expose sensitive user directories. However, because of its age and automated nature, the tool is also commonly used by malicious actors for reconnaissance. Core Functions of an SMTP Scanner Nmap (Network Mapper) : Hscan 1