Solved

Mail Header is giving internal IP information

Posted on 2006-06-13
1
256 Views
Last Modified: 2010-03-06
I have a DMZ server (smtp.domain.com) that is receiving email with MS-IIS from external and internal users.  It is then relayed internally (mail.domain.com) and then relaying back out the dmz server.  My problem is that my servers are attaching internal IP information (yyy.yyy and zzz.zzz IP addresses below) in the header of the emails.  How do I change this?  I would like to either not have the IP information at all, just the FQDN OR change yyy.yyy. and zzz.zzz. to external addresses OR some other suitable solution.  How do I do this?

This example is a users sending email to an external account (hotmail.com) from the internal network.

Received: from smtp.domain.com ([xxx.xxx.xxx.xxx]) by bay0-mc12-f15.bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.2444);
       Tue, 13 Jun 2006 08:01:54 -0700
Received: from mail.domain.com ([yyy.yyy.100.8]) by smtp.domain.com with Microsoft SMTPSVC(6.0.3790.1830);
       Tue, 13 Jun 2006 11:01:50 -0400
Received: from smtp.domain.com ([zzz.zzz.0.2]) by mail.domain.com with Microsoft SMTPSVC(6.0.3790.1830);
       Tue, 13 Jun 2006 11:01:52 -0400
Received: from computer1 ([yyy.yyy.100.200]) by smtp.domain.com with Microsoft SMTPSVC(6.0.3790.1830);
       Tue, 13 Jun 2006 11:01:48 -0400

xxx.xxx.xxx.xxx is my external IP
yyy.yyy. is my internal network
zzz.zzz. is my dmz network.

Thanks,
  DAve
0
Comment
Question by:dauyeung
1 Comment
 
LVL 104

Accepted Solution

by:
Sembee earned 125 total points
ID: 16897058
There is nothing that can be natively.
You would have to use something in the DMZ to clear the header information before sending the message out.

Personally I feel that if someone gets in to a position where they can use that information then you have bigger things to worry about.
Take a look at a lot of commercial messages that you may receive, you will see all sorts of header information. I know from experience that emails in to Gmail will have at least two internal IP addresses in the headers by the time they get to the mailbox.

Simon.
0

Featured Post

Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

Join & Write a Comment

We are happy to announce a brand new addition to our line of acclaimed email signature management products – CodeTwo Email Signatures for Office 365.
Not sure what the best email signature size is? Are you worried about email signature image size? Follow this best practice guide.
In this video we show how to create an Address List in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Organization >> Ad…
how to add IIS SMTP to handle application/Scanner relays into office 365.

743 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

11 Experts available now in Live!

Get 1:1 Help Now