FAQ: Exchange Server non-delivery reports

1. Exchange Server non-delivery reports (NDRs) indicate email delivery issues. Causes can include non-existent, inactive or expired accounts, unresolved recipients, misspelled email addresses, SMTP problems, spam, poor spam filter configuration, a full BADMAIL folder, missing reverse DNS entries, and firewall interoperability issues -- just to name a few. Get tips on enabling and disabling NDRs, and learn how to decipher and troubleshoot NDR messages in this collection of expert advice.
   
   Frequently Asked Questions:
   EXCHANGE SERVER NON-DELIVERY REPORTS
   
   How to designate NDR recipients
   How to retrieve messages delivered to inactive accounts
   NDR: 'You do not have permission to send to this recipient'
   NDR: Message blocked because it contains a banned word
   Spam filling up BADMAIL folder
   Generating an NDR from a user's mailbox
   Can I create a report/list of undeliverable email?
   Can I modify NDRs in Exchange 2003?
   User unable to send to a specific domain
   Forward unknown recipient email to a special user
   NDR errors with yahoo.com email
   Configuring Exchange Server to send NDRs to external users
   Troubleshooting 'undeliverable notifications'

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