Microsoft Exchange 2003 - NDR Chris Lehr

Introduction to Exchange 2003 Server - NDR (Non-Delivery Report)

Cleaning up NDR stuffed mail queues by Chris Lehr

I came upon this, and was shocked it was not publicized more. Microsoft released a small utility a while ago called aqadmcli.exe. It's a command line interface for SMTP queue management. When a domain gets spammed a lot, many NDR's or non-delivery reports can occur, filling the queue with messages that may never get delivered. This utility allows you to set flags, and delete messages based on these flags. For example, you can use it to delete all mail with the "FROM" being "postmaster@yourdomain.com" to remove (very very quickly compared to the GUI ESM tool) all emails sent from postmaster@yourdomain.com (which are most likely all the NDR's that are clogging their SMTP queue.

See more about Chris Lehr thoughts on Exchange

Kiwi Syslog Server - Free Utility to Analyze Your Network Messages

Syslog messages are full of information for troubleshooting network problems. When something goes wrong then surely there will be an error message in the syslog datagram - if only we can find that record and interpret the event. What will help to capture and analyze such network messages is the Kiwi Syslog Server.

Free Download of Kiwi Syslog Server

Guy Recommends: Solarwinds' Free Bulk Mailbox Import Tool

Import users, complete with mailbox from a spreadsheet. Just provide a list of the users with the fields in the top row, and save as .csv file. Then launch this FREE utility and match your Exchange fields with AD's attributes, click and import the users. Optionally, you can provide the name of the OU where the new mailboxes will be born.

There are also two bonus tools in the free download, and all 3 have been approved by Microsoft:

Bulk-import new users and mailboxes into Active Directory.
Seek and zap unwanted user accounts.
Find inactive computers.

Download your FREE bulk mailbox import tool.

SolarWinds Exchange Monitor

Here is a free tool to monitor your Exchange Server. Download the utility, then inspect your mail queues, monitor Exchange server's memory, confirm there is enough disk space and check the CPU utilization.

Free Download of SolarWinds Exchange Monitor