Solved

prevent internal Exchange Server's name from showing up on internet message header of outgoing mail

Posted on 2007-03-23
4
793 Views
Last Modified: 2010-05-18
How can I prevent our internal Exchange Server's name from showing up on internet message header of our outgoing mail?  

We recently implemented a single-server Exchange 2003 organization on our network.  The Exchange Server sits behind a Fortinet firewall device with an external IP, 65.xxx.xxx.48.  Our external MX record (mail.company.com) points to 65.xxx.xxx.49 which is set up as a Virtual IP on the Fortinet that points to our Exchange Server's (mail.company.local) internal address, 192.168.1.20
Any mail sent from our internal network to an exteranl recipient goes out through the firewall.
I noticed in a test message sent to my Comcast email account from my company account that the message header contained the following line:
   Received: from mail.company.local (mail.company.com[65.xxx.xxx.49](untrusted sender))...

Is there a way to prevent the Exchange server's local network name from being avaialble to the receiving mail server?  Could showing the internal server's name be a risk to us?  It seems to me it would be something a spammer would like to know.
0
Comment
Question by:bjordon35
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 10

Accepted Solution

by:
MATTHEW_L earned 125 total points
ID: 18780811
Go into Exchange System Manager, servers, your server, protocols, smtp, properties of smtp virtual server, under delivery tab, advanced button.  Set your FQDN for what you want people to see in banners etc.  This should be its real public FQDN probably should be the same as mx record or a record etc, but this is where you would set mail.company.com rather than mail.company.local.
0
 

Author Comment

by:bjordon35
ID: 18780915
That worked, thank you!

What would the Masquerade Domain field be used for?
0
 
LVL 10

Expert Comment

by:MATTHEW_L
ID: 18781006
This is where you would type the domain name that you are accepting mail for.  The FQDN is the public FQDN of the server so mail.company.com instead of mail.company.local.  The masquerade domain is the public domain name.  Instead of company.local it would be company.com
0
 

Expert Comment

by:mahtab786_dbi
ID: 21735264
The same problem in exchange 2007......how can i remove..
0

Featured Post

How Do You Stack Up Against Your Peers?

With today’s modern enterprise so dependent on digital infrastructures, the impact of major incidents has increased dramatically. Grab the report now to gain insight into how your organization ranks against your peers and learn best-in-class strategies to resolve incidents.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains in simple steps how to renew expiring Exchange Server Internal Transport Certificate.
This article explains how to install and use the NTBackup utility that comes with Windows Server.
To show how to create a transport rule 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 Mail Flow >> Rules tab.:  To cr…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…

734 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