I use ddos mitigation services on my server and due to this it is very important that my server ip stays hidden. I own two servers, the primary server houses my website and the secondary server is used for emails. I use the secondary servers smtp info to send email. The problem is that the secondary server adds the ip address of the primary server in the email headers.
x-store-info:J++/JTCzmObr++wNraA4Pa4f5Xd6uensydyekesGC2M= Authentication-Results: hotmail.com; spf=none (sender IP is 62.62.622.62) smtp.mailfrom=; dkim=none header.d=mywebsite.com; x-hmca=none X-SID-PRA: X-AUTH-Result: NONE X-SID-Result: NONE X-Message-Status: n:n X-Message-Delivery: Vj0xLjE7dXM9MDtsPTE7YT0xO0Q9MTtHRD0xO1NDTD0x X-Message-Info: aKlYzGSc+LkUh5O0AnwOe0N6RG7BEHXa+Ep9dVv2J/KLBdwJ4Iby2lXjCPbTQYFQteOst4AFBmvouIk6oSlsys3EmGNQAosOELxkPAlgXi6poOzgrzcwdKVa0O5X7ZL8AcJld8q/XqwGrh9m5oeIOUZC7Cl4wZMX Received: from mail.secondaryserver.com ([62.62.622.62]) by COL0-MC4-F28.Col0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4900); Tue, 25 Dec 2012 20:42:38 -0800 Received: from [18.104.22.168] (port=59186 helo=localhost) by mail.secondaryserver.com with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.80) (envelope-from ) id 1TnipC-0001XL-4D for ; Tue, 25 Dec 2012 22:42:38 -0600 To: Test E-Mail Subject: Test E-Mail Message Date: Wed, 26 Dec 2012 05:42:37 +0100 From: mywebsite Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline MIME-Version: 1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - mail.secondaryserver.com X-AntiAbuse: Original Domain - live.com X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - mywebsite.com X-BWhitelist: no X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (localhost) [22.214.171.124]:59186 X-Source-Auth: emailacc X-Email-Count: 0 X-Source-Cap: ZW1haWx0bWM7dG1jYmxvZ3M7dGVtcGxlLndlYnNpdGV3ZWxjb21lLmNvbQ== Return-Path: Message-ID: X-OriginalArrivalTime: 26 Dec 2012 04:42:38.0526 (UTC) FILETIME=[6EC335E0:01CDE323]
In this header the ip address 62.62.622.62 belongs to the secondary server and the ip address 126.96.36.199 belongs to the primary server. I want to remove all occurrences of 188.8.131.52 from this header and replace them with 62.62.622.62.