Hmailserver Hacktricks | !new!

telnet mail.target.com 25 220 mail.target.com ESMTP hMailServer

HMailServer's web administration interface may reveal sensitive information, such as server configuration or user credentials, if not properly secured.

The hMailServer admin stores SSL certificates for SMTP/IMAP in the Data directory. Attackers can export them and decrypt TLS traffic later. hmailserver hacktricks

HMailServer, by default, allows unauthenticated SMTP relaying, which can be exploited to send spam emails. An attacker can use tools like telnet or swaks to test if the mail server is vulnerable.

For pentesters, combine these tools:

If hMailServer uses MySQL or MSSQL, the database stores password hashes for user accounts (not the admin panel's password). Attackers who gain access to the database can extract user hashes.

: nc -nv 25 Typically returns: 220 ESMTP hMailServer 2. Configuration & Credential Harvesting telnet mail

SELECT accountaddress, accountpassword FROM hm_accounts;

Also, check logging settings: if SMTP logging is enabled, all authentication attempts (including passwords) are saved to %PROGRAMFILES%\hMailServer\Logs\*_log.txt . Attackers who gain access to the database can

If the server accepts delivery to an external domain without authentication, it's an open relay – usable for spam and phishing.