I found an email from my gmail inbox which claim to be sent by me, but in fact i did not send it. Does it mean someone has hacked into my mail box?

Posted on 2011-10-31
Last Modified: 2013-12-06

Why am I seeing the error "This message may not have been sent by...."?

Why am I seeing this warning?

You'll see this warning if a sender is claiming to be from Gmail, but we couldn't confirm that the email originated from a Gmail sender. For example, you might receive an email claiming to be from that was not actually sent from Gmail. All mail sent by Gmail should have specific information in the message (called authentication data) that can verify that the message was sent by Gmail. If you see a warning message indicating that a message may not have been sent by a Gmail user, this means that the authentication data is missing. The information that we use to detect the sender is included in the message headers, but these headers can be hard to understand. So, Gmail analyzes this information and displays it in a simple to read format, for your protection.

 The missing data can be an indication that the message was forged and not really sent by the sender, or that it was sent by the sender through a website or a sender that did not provide information about the origin of the message (for example, a website sharing a news article with you). If the email wasn't sent by Gmail, but the sender authenticated the message and provided information about who sent the message, we'll show you the sender's name and the service that authenticated the message. For example, if sent you a card from a website called, you'd see the sender listed as " via"
Question by:ccressy5
    LVL 21

    Accepted Solution

    Does it mean someone has hacked into my mail box?
    That is of course possible, but probably not the case in this situation.

    If you paste the headers of the suspect mail, I can tell you exactly why you are seeing that warning, and if the mail is legit or a spoof.  No need to paste the body just the headers, and if you sanitize any data please don't mangle it too much.

    Open the mail in Gmail, click the drop down box next to Reply in the top right then click Show original.
    LVL 1

    Expert Comment

    As a precaution you should change your gmail password.

    Author Comment

    Received: by with SMTP id o10cs57585qcn;
            Mon, 31 Oct 2011 06:27:20 -0700 (PDT)
    Received: by with SMTP id ml7mr24079961pbc.17.1320067639125;
            Mon, 31 Oct 2011 06:27:19 -0700 (PDT)
    Return-Path: <>
    Received: from ( [])
            by with ESMTP id q2si10660145pbd.196.2011.;
            Mon, 31 Oct 2011 06:27:19 -0700 (PDT)
    Received-SPF: neutral ( is neither permitted nor denied by best guess record for domain of client-ip=;
    Authentication-Results:; spf=neutral ( is neither permitted nor denied by best guess record for domain of
    Received: from
          by with esmtpa (Exim 4.69)
          (envelope-from )
          id 1MM2UZ-3674og-4K
          for <>; Mon, 31 Oct 2011 17:27:17 +0400
    From: <>
    To: <>
    Subject: Virtual Manager Vacancy
    Date: Mon, 31 Oct 2011 17:27:17 +0400
    MIME-Version: 1.0
    Content-Type: text/plain;
    Content-Transfer-Encoding: 7bit
    X-Mailer: wugsavqsr 06
    Message-ID: <>

    I would like to take this time to welcome you to our hiring process
    and give you a brief synopsis of the position's benefits and requirements.

    If you are taking a career break, are on a maternity leave,
    recently retired or simply looking for some part-time job, this position is for you.

    Occupation: Flexible schedule 1 to 3 hours per day. We can guarantee a minimum 20 hrs/week occupation
    Salary: Starting salary is 3000 EUR per month plus commission.

    Region: Europe

    Please note that there are no startup fees or deposits to start working for us.

    To request an application form, schedule your interview and receive more information about this position
    please reply to with your personal identification number for this position IDNO: 7617

    LVL 21

    Expert Comment

    The mail is just spoofing the body From to look like it came from you, nothing to worry about.

    Author Comment

    Thank you very indeed! Your solution is very helpful, it sets my mind at peace!

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