Is it possible to hide originating IP from message header Received.

Is it possible to hide originating IP from message header Received.

Hi,

I've setup my server with sSMTP to send mail trough your smtp.zoho.com:587 with my account details. Mail gets delivered with no problem the only problem is that my header file looks like this:

  1. Delivered-To: myemail@gmail.com Received: by 10.58.200.3 with SMTP id jo3csp354740vec; Tue, 5 Aug 2014 20:12:59 -0700 (PDT) X-Received: by 10.68.104.66 with SMTP id gc2mr8620210pbb.17.1407294779515; Tue, 05 Aug 2014 20:12:59 -0700 (PDT) Return-Path: <podrska@myorganisation.com> Received: from sender1.zohomail.com (sender1.zohomail.com. [74.201.84.155]) by mx.google.com with ESMTPS id y7si1953297pdo.12.2014.08.05.20.12.58 for <myemail@gmail.com> (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 05 Aug 2014 20:12:59 -0700 (PDT) Received-SPF: none (google.com: podrska@myorganisation.com does not designate permitted sender hosts) client-ip=74.201.84.155; Authentication-Results: mx.google.com; spf=neutral (google.com: podrska@myorganisation.com does not designate permitted sender hosts) smtp.mail=podrska@myorganisation.com Message-Id: <53e19d3b.2735460a.13df.4640SMTPIN_ADDED_MISSING@mx.google.com> Received: from myorganisation.com (162.XXX.XXX.XXX [162.XXX.XXX.XXX]) by mx.zohomail.com with SMTPS id 1407294777867637.2181804956941; Tue, 5 Aug 2014 20:12:57 -0700 (PDT) Received: by myorganisation.com (sSMTP sendmail emulation); Wed, 06 Aug 2014 05:12:55 +0200 From: "root" <podrska@myorganisation.com> Date: Wed, 06 Aug 2014 05:12:55 +0200 To: myemail@gmail.com Subject: testing ssmtp setup X-ZohoMailClient: External X-Zoho-Virus-Status: 2 test
Note the bold text, as you can see my internal server IP is shown and my server is vulnerable to attacks then. 

I am very concerned about security, is there a way to somehow hide that IP?

Best Regards!