| http://www.w3.org/ns/prov#value | - For example, if you telnet to an e-mail server on port 25 by entering telnet mail.your_domain.com 25 at a command prompt, you may see something like this: 220 mail.your_domain.com ESMTP all_the_version_info_ you_need_to_hack Ready Most e-mail servers return detailed information, such as the version and the current service pack installed.
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