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IMAP list command only returns a list of Exchange public folders

Discover how to troubleshoot an IMAP list command that only returns a list of Exchange public folders instead of a complete list of all available folders.

Are you aware of any situation when the Internet Message Access Protocol (IMAP) list command for an Exchange 2000 Server mailbox only returns a list of the Exchange public folders? The IMAP list command should return a complete folders list that includes both private and public folders. Login is successful and the IMAP list command isn't reporting any errors. Any idea on what could be causing this?
When this IMAP list command problem occurs, double-check the following:
  • Make sure you're not just logging onto the Exchange public folders anonymously.
  • Try to refresh the folders list.
  • Make sure you are subscribing to all public folders.

If that doesn't yield any results, please have a look through the application event log on the Exchange server for errors or warnings from MSExchangeIS Public. You may want to consider turning up diagnostics logging and then sending an IMAP list command. You should then review the application event log for any unusual entries.

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Related information from SearchExchange.com:

  • Tip: A primer on messaging standards -- SMTP, POP and IMAP
  • Expert Advice: How to enable Exchange Server public folder logging
  • Reference Center: Exchange IMAP tips and tutorials
  • Reference Center: Exchange Server public folders
  • Dig Deeper on Exchange Server setup and troubleshooting

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