When an intruder connects to an Exchange Server"s SMTP or NNTP port and sends certain sequences of incorrect data, an application error may occur, causing either service to stop responding.
For those who cannot load the hotfix, these attacks can be detected using the Server Monitor feature of Exchange Server Administrator, which can automatically restart the services, should they fail due to this attack.
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- Originally reported by ISS
Posted on The NT Shop on July 25, 1998