On Sat, 30 Sep 2006, Tomas Kuliavas wrote:
UW IMAP 2006a.369 and 2006b.DEV.SNAP-0609291750 can't subscribe \NoSelect
folders.

It was a bug that \NoSelect names could be subscribed in the past, deliberately introduced several years ago to work around a Netscape bug years ago. That workaround caused problems for compliant clients, and has now been removed.

Any client that depends upon the ability to subscribe \NoSelect names is broken. So are clients that unilaterally subscribe all names returned by LIST.

I can't find rfc 3501 chapter which says that noselect mailboxes can't be subscribed.

RFC 3501, section 6.3.6:

      A server MAY validate the mailbox argument to SUBSCRIBE to verify
      that it exists.  However, it MUST NOT unilaterally remove an
      existing mailbox name from the subscription list even if a mailbox
      by that name no longer exists.

A \NoSelect name is not a mailbox. Thus, if "foo" is a \NoSelect name, it does not exist as a mailbox.

-- Mark --

http://staff.washington.edu/mrc
Science does not emerge from voting, party politics, or public debate.
Si vis pacem, para bellum.
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