troubleshooting Question

Exchange 2003 Virus / Blacklisted

Avatar of Ray McGowan
Ray McGowanFlag for United States of America asked on
ExchangeWindows Server 2003
7 Comments2 Solutions399 ViewsLast Modified:
Current System Configuration:

File Server (Domain Controller)
Windows Server 2003
Service Pack 2

Mail Server (Member Server)

Windows Server - Standard Edition 2003
Service Pack 2
Microsoft Exchange Server 2003
Service Pack 2

Problem:

Over the last several weeks we have been getting complaints from users that emails have been getting kicked back from the destination servers with non delivery report errors.  Many of these kick back messages indicated that our server was on a "Blacklist" and therefore any mail coming from us was rejected.  We checked and sure enough we were listed on several blacklist sites as send unsolicated mail.  Upon checking the Exchange Server it was found that the server was producing a large amount of NDR's and the system queue was running with hundreds of messages.

We setup the recipient Filter and enabled it on the SMTP virtual server.  We wanted to clean out all of the mail that was in the queue.  We created a false SMTP connector (99.99.99.99) and routed all mail from the queue to the connector.  we have been monitoring it now for several hours waiting for the number of messages in the queue to stablize to "0" but it has not.  Messages keep appearing in the "Messages Pending Submission" folder.  We checked the messages in the folder and a great many of them are from "postmaser@ourdomain.com".  This is leading us to believe that we may have a virus of some type that is generating the messages and putting them in the queue.  I have Macafee server AV 8.8 Enterprise running on the server and we have run several scans but have found nothing.

I am at a loss and would appriciate any help from someone who has had this type of problem in the past.

Thanks.
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