Thursday, February 02, 2012 2:25 PM
My mail external IP now Is blocked because of some strange SPAM i cannot find the PC\IP\User sending those msgs because there is not internal IP or internal ID in the MSG header. the only internal IP i can c is my Exchange server.
- Edited by Maen Abbasi Thursday, February 02, 2012 2:53 PM
Friday, February 03, 2012 8:31 AM
Follow the RBL provider links that give you an explanation of why you are listed. This can help you distinguish between a mis-configuration problem (open relay) and an internal infection.
If it turns out to be an infected machine you will of course have to make sure AV is properly installed and updated on all machines.
It will also be helpful to see which machines are connecting to your Exchange server. A network sniffer can be very helpful:
IMF Tune - Anti-spam extending the Exchange 2003, 2007, 2010 IMF/Content Filter - http://www.windeveloper.com/imftune/
Wednesday, February 08, 2012 4:53 AM
You should test to see if your server is an open relay, if it is, you should fix it..
I would start by testing you server using an online tool like this one..
MCTS - Gold Certification
Thursday, February 09, 2012 1:46 AM
Hello Maen Abbasi,=> In E2K3 Server u can enable the IMF for spam
Global Setting --> message delivery properties -->
Connection filtering --> we set connection filtering rule
Sender filtering --> we check Archive filtered messages
Filter messages with blank sender
Accept messages without notifying sender of filtering
Intelligent Message Filtering --> We set 7, Archive and 6
Recipient Filtering --> Filter recipient who are not in directory was checked
=> Default SMTP virtual server -->properties -->
General --> Advanced --> Edit --> we check all except Apply sender ID filter
=> Done all the settings on Global setting and Default SMTP server
=> Clear the all the SPAM from the queue
=> Stop the SMTP service & rename the Mailroot folder to mailroot.old
=> Checked the queue
=> Ran iisreset
In the Event Viewer Look for Event ID 1708 – It will give u information about the Affected users.
IF u find any user or Machine, Scan those PC & If possible reset the Password for that account.
Do this it will fix your Issue.
EXCHANGE2010, MCSE, MCTS, MCSA MESSAGING, CCNA & GNIIT