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
162 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 17

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 17

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

Enabling OSINT in Activity Based Intelligence

Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

Join & Write a Comment

Set OWA language and time zone in Exchange for individuals, all users or per database.
Resolve Outlook connectivity issues after moving mailbox to new Exchange 2016 server
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…

747 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

10 Experts available now in Live!

Get 1:1 Help Now