Solved

When reading header content in MS outlook 2003 how do you know what is real and what is not?

Posted on 2006-10-31
7
164 Views
Last Modified: 2010-04-08
Good Day Experts,

I'm going over a few junk e-mails to see who is sending them to us by viewing their Headers.  And one of them said that the "Received" was from our WAN Ip address' DNS reference.  Then it says that it is received by our internal LAN DNS name of our Exchange Server.  Is everything listed in these headers not tainted by spammers or can they do something to make it look like the e-mail is coming from our own DNS name?  Or am I reading this wrong?  

Many Thanks,

ellsworth
0
Comment
Question by:ellsworth2000
  • 3
  • 2
7 Comments
 
LVL 18

Expert Comment

by:Serena Hsi
ID: 17843938
It's called spoofing, and yes, they can make it look like your own ISP or domain is the one spamming.

How secure is your mail port? Do you have a firewall?
0
 
LVL 18

Accepted Solution

by:
Serena Hsi earned 500 total points
ID: 17844006
Some light reading:

Microsoft Security Bulletin MS04-026
http://www.microsoft.com/technet/security/Bulletin/MS04-026.mspx

How your Exchange server can get blacklisted
http://searchexchange.techtarget.com/originalContent/0,289142,sid43_gci1182936,00.html

Anti-Spam Enhancements in Exchange Server 2003 Service Pack 2
http://www.microsoft.com/technet/prodtechnol/exchange/2003/sp2security.mspx

An example of VPN server spoofing
http://www-rocq.inria.fr/who/Philippe.Sultan/vpn/spoofed_vpn_server.html
0
 

Author Comment

by:ellsworth2000
ID: 17844015
We have a Netgear ProSafe VPN Firewall FVS338.
0
 

Author Comment

by:ellsworth2000
ID: 17844024
Oh just to let you know our E-mail server is Exchange 2000 on SBS 2000
0
 

Author Comment

by:ellsworth2000
ID: 17844030
Is there a way to trace who it was truely sent from?
0

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

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

Follow this checklist to learn more about the 15 things you should never include in an email signature from personal quotes, animated gifs and out-of-date marketing content.
Finding original email is quite difficult due to their duplicates. From this article, you will come to know why multiple duplicates of same emails appear and how to delete duplicate emails from Outlook securely and instantly while vital emails remai…
This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory. NOTE: For Outlook 2016 and 2013 perform the exact same steps. Open a new email: Click the New email button in Outlook. Start typing the address: …
Many of my clients call in with monstrous Gmail overloading issues with Outlook. A quick tip is to turn off the All Mail and Important folders from synching. Here is a quick video I made to show you how to turn off these and other folders in Gmail s…

785 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