?
Solved

Exchange 10 queue backing up with bogus mailings.

Posted on 2013-01-12
1
Medium Priority
?
296 Views
Last Modified: 2013-01-29
I've been trying to figure out how to trace this/stop it.. in 08 exchange queue I'm getting more and more queue backing up with undeliverable mail like the one below 26 of them.  I'm not sure how to trace where these are coming from and best way to stop?  

Identity: FOXS1\520209\2469785
Subject: Undeliverable: Search Anyones Criminal Record Online
Internet Message ID: <73ddbed9-847c-4441-8191-4201649dba07@domain.com>
From Address: <>
Status: Ready
Size (KB): 70
Message Source Name: DSN
Source IP: 255.255.255.255
SCL: -1
Date Received: 1/12/2013 10:46:12 AM
Expiration Time: 1/14/2013 10:46:12 AM
Last Error: 400 4.4.7 Message delayed
Queue ID: FOXS1\520209
Recipients:  garton@portsweld.com
0
Comment
Question by:dee30
[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 1500 total points
ID: 38770610
You need to filter invalid recipients.  Presumably you don't have any Anti-Spam software installed.

Basically spammers are bombarding your server with mail destined to addresses that don't exist on your server and your server isn't rejecting the mail, it is accepting them and then realising the addresses don't exist and then sending back an NDR message.

You will need to enable Exchange Anti-Spam:

http://technet.microsoft.com/en-us/library/bb201691.aspx

Then use the following Exchange Management Shell Commands:

Set-RecipientFilterConfig -Enabled $true

and

Set-RecipientFilterConfig -RecipientValidationEnabled $true

Alan
0

Featured Post

Problems using Powershell and Active Directory?

Managing Active Directory does not always have to be complicated.  If you are spending more time trying instead of doing, then it's time to look at something else. For nearly 20 years, AD admins around the world have used one tool for day-to-day AD management: Hyena. Discover why

Question has a verified solution.

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

A list of top three free exchange EDB viewers that helps the user to extract a mailbox from an unmounted .edb file and get a clear preview of all emails & other items with just a single click on mailboxes.
If you troubleshoot Outlook for clients, you may want to know a bit more about the OST file before doing your next job. IMAP can cause a lot of drama if removed in the accounts without backing up.
This video discusses moving either the default database or any database to a new volume.
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the adminiā€¦
Suggested Courses

771 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