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some email account change their mask when sending any emails

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  • some email account change their mask when sending any emails

    Hi,

    i have exchange server 2010 which migrated from exchange 2007 6 months ago.


    the problem is when i create any new user account and when i trying to send any emails (example to gmail.com) i found the message header like the below:

    Delivered-To: [email protected]
    Received: by 10.25.60.4 with SMTP id j4csp2255470lfa;
    Wed, 30 Sep 2015 03:45:09 -0700 (PDT)
    X-Received: by 10.66.221.104 with SMTP id qd8mr4184147pac.155.1443609909604;
    Wed, 30 Sep 2015 03:45:09 -0700 (PDT)
    Return-Path: <[email protected] cu reserver.net>
    Received: from p3plsmtp21-06.prod.phx3.secureserver.net (p3plsmtp21-06.prod.phx3.secureserver.net. [68.178.252.43])
    by mx.google.com with ESMTP id xu3si679592pab.194.2015.09.30.03.45.09
    for <[email protected]>;
    Wed, 30 Sep 2015 03:45:09 -0700 (PDT)


    but when send any email from any old created accounts to any domain (example gmail.com) i found in message header like this details

    Received: by 10.25.60.4 with SMTP id j4csp2251699lfa;
    Wed, 30 Sep 2015 03:34:34 -0700 (PDT)
    X-Received: by 10.180.8.68 with SMTP id p4mr22472576wia.16.1443609274576;
    Wed, 30 Sep 2015 03:34:34 -0700 (PDT)
    Return-Path: <[email protected]>
    Received: from [187.24.11.177] (newmail.maydomain.org. [187.24.11.177])
    by mx.google.com with ESMTP id il8si484617wjb.130.2015.09.30.03.33.54
    for <[email protected]>;
    Wed, 30 Sep 2015 03:34:34 -0700 (PDT)

    why the return path changed from [email protected] to <[email protected] cu reserver.net> when i send email from new created user. why this change happened and what is cause that.

    Can you help??
    Last edited by mhegaz; 30th September 2015, 15:11.

  • #2
    Are you sending via some sort of smarthost or 3rd party spam filtering service?
    Tom Jones
    MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
    PhD, MSc, FIAP, MIITT
    IT Trainer / Consultant
    Ossian Ltd
    Scotland

    ** Remember to give credit where credit is due and leave reputation points where appropriate **

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    • #3
      no i'm using use dns mx routing option like the attached

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