The remote host is vulnerable to a Script Injection attack.
The remote host is running VisNetic MailServer, a commercial mail server for the Microsoft platform. The version of VisNetic MailServer installed on the remote host fails to sanitize user-supplied input to the 'lang_settings' parameter of the 'accounts/inc/include.php' and 'admin/inc/include.php' scripts before using it to include PHP code. An unauthenticated attacker may be able to exploit these flaws to view arbitrary files on the remote host or to execute arbitrary PHP code after injecting it into the mail server's log file.
Upgrade to version 188.8.131.52 or later.