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    Smile Extracting data from an SMTP server?


    Calling all SMTP/mail specialists!

    I'm curious what interesting information one can collect from interrogating an SMPT mail server/proxy/relay.

    For example, is it possible to tell what SPAM-prevention or other mail security techniques/services/vendors the SMTP server is using? How about other SMTP-specific pieces of information?

    What do you think?
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    You can't extract data from a mail server directly, but you can test how a mail server responds by using Telnet SMTP commands.
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    Originally Posted by couttsj
    You can't extract data from a mail server directly, but you can test how a mail server responds by using Telnet SMTP commands.
    Correct. Is there any data one could extract w/ SMTP commands?
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    Originally Posted by craayzie
    Correct. Is there any data one could extract w/ SMTP commands?
    The simple answer is NO. You can find out what SMTP commands are available by examining the various RFC's or doing a search for "telnet SMTP" or "SMTP commands". SMTP servers are not required to support all commands, but for example, the response to EHLO will tell you what extended commands are supported. Many of the large email suppliers go well beyond what is required by RFC, and they are not under any obligation to reveal their local policies.

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