Many sendmail daemons can be abused to get information about what accounts exist. By following basic RFC standart procedues - without VRFY and EXPN - we can still list the valid users using by another command as suggested in [RFC821]. Includes demonstration code smtp-cracker.c.
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Log monitor is a small application that let you see four logs all at once. It's easy to use, since it works under X-Window and uses GTK as the main library.
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