46 lines
2.0 KiB
Plaintext
46 lines
2.0 KiB
Plaintext
MBOX-Line: From guenther+imap at sendmail.com Fri Jul 29 21:29:31 2011
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To: imap-protocol@u.washington.edu
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From: Philip Guenther <guenther+imap@sendmail.com>
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Date: Fri Jun 8 12:34:46 2018
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Subject: [Imap-protocol] Determining the mailbox hierarchy prefix when
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NAMESPACE is not supported
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In-Reply-To: <4E3382E3.3010509@earthlink.net>
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References: <4DEBB242.2090200@BusCom.net>
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<alpine.OSX.2.00.1106051606130.4942@hsinghsing.panda.com>
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<4E3382E3.3010509@earthlink.net>
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Message-ID: <alpine.BSO.2.00.1107292118540.19142@morgaine.smi.sendmail.com>
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On Fri, 29 Jul 2011, Rick Sanders wrote:
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> Is there a way to reliably figure out the mailbox hierarchy prefix when an
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> IMAP server does not support the NAMESPACE command?
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RFC 3501, section 6.3.8, paragraph 4:
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An empty ("" string) mailbox name argument is a special request to
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return the hierarchy delimiter and the root name of the name given
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in the reference. The value returned as the root MAY be the empty
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string if the reference is non-rooted or is an empty string. In
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all cases, a hierarchy delimiter (or NIL if there is no hierarchy)
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is returned. This permits a client to get the hierarchy delimiter
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(or find out that the mailbox names are flat) even when no
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mailboxes by that name currently exist.
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Note:
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1) That quote is the only place in the spec where "root" is used in
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reference to mailbox names, so it's not clear what requirements are
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placed on the name that is returned other than those implied in
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general by the historical context of roots in hierarchical namespaces.
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Those that don't believe standards exist in a historical context would
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say that a server can return whatever it wants there and that it has
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no meaning. Those who believe otherwise think the former are nihilists
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that need to be kept away from computers.
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2) There's no guarantee that there's only one "mailbox hierarchy prefix"
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as you call it on the server. You asked for *the* prefix; what if
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there are many?
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Philip Guenther
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