Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

spam looks like being sent from our server.

Posted on 2012-03-30
1
Medium Priority
?
424 Views
Last Modified: 2012-04-02
I was looking at message tracking log in our exchagne server 2003, some spam emails look like being sent from our email server(screen capture attached).
I restricted email relay in our server (screen capture attached) and tested using open relay test (http://www.checkor.com/), it blocks it properly. Where can I check how the spams being sent from in our email server?
hhhhhhhhhh.jpg
ggggggg.jpg
0
Comment
Question by:crcsupport
[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
1 Comment
 
LVL 76

Accepted Solution

by:
Alan Hardisty earned 2000 total points
ID: 37788085
My article discusses an Authenticated Relay situation (as well as an NDR attack) and due to the volume of Authenticated relay Attacks I have seen of late, I would suspect that this is what is happening.

Please have a read of my article and work through the logging level increase to isolate the account.

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/A_2556-Why-are-my-outbound-queues-filling-up-with-mail-I-didn't-send.html

Also - please have a read of my two blog articles:

http://alanhardisty.wordpress.com/2010/09/28/increase-in-frequency-of-security-alerts-on-servers-from-hackers-trying-brute-force-password-programs/

http://alanhardisty.wordpress.com/2010/12/01/increase-in-hacker-attempts-on-windows-exchange-servers-one-way-to-slow-them-down/

The last blog entry has a quick fix which should stop the problem dead in it's tracks.

Alan
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

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

Article by: Shawn
IT teams define success as solving problems quickly. To enable ITSM modernization we have to think of adopting the tools and methods that will enable resolution of ITSM issues more quickly.
Are you an Exchange administrator employed with an organization? And, have you encountered a corrupt Exchange database due to which you are not able to open its EDB file. This article will explain all the steps to repair corrupt Exchange database.
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…
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…
Suggested Courses

715 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