Yep, you're right, I'm wrong. Forgive me for being so old that my primary
memory of IMAP was prior to the implementation of "Subscribe". :-)

Regards,

Michael B. Smith, MCITP:SA,EMA/MCSE/Exchange MVP
My blog: http://TheEssentialExchange.com/blogs/michael
I'll be at TEC'2009! http://www.tec2009.com/vegas/index.php


-----Original Message-----
From: Ben Scott [mailto:mailvor...@gmail.com] 
Sent: Thursday, February 05, 2009 7:39 PM
To: MS-Exchange Admin Issues
Subject: Re: Rules

On Thu, Feb 5, 2009 at 4:37 PM, Michael B. Smith
<mich...@theessentialexchange.com> wrote:
> No. IMAP only recognizes subfolders of INBOX. (At least that's true for
> IMAPrev1 which is what Exchange supports.)

  I'm sorry, but I believe you are completely wrong on this one.  :)

  I've used plenty of old Unix IMAP servers, with ancient crufty
versions of Pine, that had folders outside of INBOX, and they worked
just fine.

  I just double-checked the RFCs.  They clearly state that, outside of
the "INBOX" special name, the interpretation of mailbox names is
implementation-dependent.  It's entirely up to the IMAP server to
generate the mailbox names, and it can do just about anything it
wants.  They do specify that if a hierarchy is used, it must use a
single separator character and read left-to-right, but that's it.

  I just tried Outlook Express against our Exchange 2003 server for my
account, and it happily displayed all my folders, including my "Saved
Mail" folder (which is rooted under my mailbox top-level object, not
under "Inbox"), and also all the Public Folders I have access to.

  References for IMAP protocol spec:

RFC-1730 (IMAP Version 4; 1994)
http://tools.ietf.org/html/rfc1730#section-5.1

RFC-2060 (IMAP Ver 4 Rev 1; 1996)
http://tools.ietf.org/html/rfc2060#section-5.1

RFC-3501 (IMAP Version 4 Rev 1; 2003)
http://tools.ietf.org/html/rfc3501#section-5.1

-- Ben

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