SMTP header vulnerability

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    Dera friends,

    I am just annoyed after recieving mail from my exchange server successfully in GMAIL and looked deep for the header information, coz its displaying my server details, internal LAN ip assigned to it, my domain name, domain’s UPN suffix and all the very very sensitive information.

    PLz plz plz…consider this as a seveiour problem and help me to secure my server..

    Here i am pasting the details. and for security reasons i altered the original message

    X-Gmail-Received: 60f4b33a6bfac24bfd44bd18738d9dccc14fd659
    Delivered-To: [email protected]
    Received: by xx.xx.xx.xx with SMTP id k20cs119410nzk;
    Wed, 24 May 2006 06:22:05 -0700 (PDT)
    Received: by xx.xx.xx.xx with SMTP id f16mr1701597huf;
    Wed, 24 May 2006 06:22:05 -0700 (PDT)
    Return-Path: < [email protected] >
    Received: from ( [xx.xx.xx.xx])
    by with ESMTP id 4si1771001hud.2006.;
    Wed, 24 May 2006 06:22:05 -0700 (PDT)
    Received-SPF: pass ( best guess record for domain of [email protected] designates xx.xx.xx.xx as permitted sender)
    Received: from ([xx.xx.xx.xx]) by with Microsoft SMTPSVC(6.0.3790.1830);
    Wed, 24 May 2006 18:52:02 +0530
    Subject: TEST
    MIME-Version: 1.0
    Content-Type: multipart/alternative;
    Content-class: urn:content-classes:message
    X-MimeOLE: Produced By Microsoft Exchange V6.5
    Date: Wed, 24 May 2006 18:52:01 +0530
    Message-ID: <[email protected]>
    Thread-Topic: TEST
    Thread-Index: AcZ/NQrq8KJEXA0fT267S1rbeFDOBw==
    From: “radhakanth ayyagari” < [email protected] >
    [email protected]
    X-OriginalArrivalTime: 24 May 2006 13:22:02.0394 (UTC) FILETIME=[0B2A17A0:01C67F35]

    This is a multi-part message in MIME format.

    Thankx to u all in advance…waiting for your valuble reply


    Radha Kanth

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