Re: Avoiding Postfix Fingerprinting

From: Michel Arboi (michel.arboi_at_gmail.com)
Date: 03/10/05

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    Date: Thu, 10 Mar 2005 11:38:47 +0100
To: Isidro Labrador <irlabrador@sgi.es>, pen-test@securityfocus.com

    On Tue, 8 Mar 2005 17:49:56 +0100, Joachim Schipper
    <j.schipper@math.uu.nl> wrote:
    > See postconf(5), under smtpd_banner. (I'm pretty sure Nessus just grabs
    > the banner; however, some more advanced fingerprinting is possible, if
    > someone is very knowledgeable.)

    As several people have already said, smtpscan ignores the banner.
    Here is an article from the author:
    http://www.greyhats.org/outils/smtpscan/remote_smtp_detect.pdf

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