Name: altnamespace
Type: SWITCH
Default-Value: 1
Last-Modified: 3.0.0

Use the alternate IMAP namespace, where personal folders reside at the same
level in the hierarchy as INBOX.

This option ONLY applies where interaction takes place with the
client/user.  Currently this is limited to the IMAP protocol (imapd) and
Sieve scripts (lmtpd).  This option does NOT apply to admin tools such as
cyradm (admins ONLY), reconstruct, quota, etc., NOR does it affect LMTP
delivery of messages directly to mailboxes via plus-addressing.  The
default changed in 3.0 from off to on.
