Nmap is the industry standard for network discovery and vulnerability scanning. It includes the powerful , which features specialized scripts for safely auditing SMTP servers.
SMTP Scanner Hscan 1.2 is a valuable tool for network administrators and cybersecurity professionals looking to identify and mitigate the risk of open relay SMTP servers. With its efficient scanning capabilities, user-friendly interface, and support for multiple platforms, it stands out as a useful addition to any network security toolkit.
: Set the number of threads; more threads increase speed but require more system resources.
18;write_to_target_document7;default18;write_to_target_document1a;_3RXuac-kHofDkPIPqKiO8Qg_20;5206;0;4c3b; Smtp Scanner Hscan 1.2 Download
smtp-open-relay.nse : Tests if the target mail server is configured as an open relay.
To prevent automated tools like Hscan from discovering vulnerabilities in your mail infrastructure, implement the following defense strategies: Disable VRFY and EXPN Commands
| Parameter | Function | Default Value | | :--- | :--- | :--- | | -max <threads,hosts> | Specifies the maximum number of scanning threads and concurrent hosts. | 120, 40 | | -time <milliseconds> | Sets the TCP connection timeout in milliseconds. | 10000 | | -sleep <milliseconds> | Sets the delay between probing threads for services like FTP/POP/IMAP. | 200 | | -ping | Pings the host before scanning to ensure it's alive. | Disabled by default | | -report | Generates an HTML report in the report directory. | None | Nmap is the industry standard for network discovery
Identifying compromised servers that are actively participating in spam distribution. Understanding the "Hscan 1.2 Download" Requirement
A multithreaded Python-based scanner designed to find open-relay and unsecured SMTP servers by scanning IP ranges. It is available on GitHub .
(currently at version 2.0.8 as of late 2024) is a professional on-premise vulnerability scanner developed by the Russian company Crayon . To prevent automated tools like Hscan from discovering
If your goal is purely historical research or nostalgia, follow this sandboxed approach:
Deploy SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance) to prevent spoofing. Share public link
