DOCUMENT:Q311468 06-AUG-2002 [exchange] TITLE :Exchange 2000 Does Not Support IMAP4 NAMESPACE Command PRODUCT :Microsoft Exchange PROD/VER::5.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange 2000 Server - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- SUMMARY ======= In Exchange 2000, Internet Message Access Protocol 4 (IMAP4) protocol does not support the other user's name space. This functionality is available only in Exchange Server 5.5. When you open an IMAP4 connection on port 143 (default port number) to an Exchange server, log on with a user name and password, and then run the namespace command, Exchange Server 5.5 returns the list of name spaces including the other users' name spaces (delegated users). Exchange 2000 only returns the name space for the current user. MORE INFORMATION ================ Note the output you receive when you run the following commands: telnet 143 a001 login a002 namespace In Exchange 2000, you receive the following output: * NAMESPACE (("" "/")) NIL (("Public Folders/" "/")) In Exchange Server 5.5, you receive the following output: * NAMESPACE (("" "/")) (("Other users/" "/")) (("Public Folders/" "/")) Additional query words: IMAP4 ====================================================================== Keywords : Technology : kbExchangeSearch kbExchange550 kbZNotKeyword2 kbExchange2000Search kbExchange2000Serv Version : :5.5 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.