+ - The search expression in the LDAP backend of the Addressbook is now
+ configurable, which can allow the result set to be expanded.
+ - Preliminary support for NAMESPACE in Squirrelmail IMAP Backend: NAMESPACE
+ is parsed and stored in session upon login.
+ - Now uses the $Forwarded IMAP keyword for forwarded messages, when it is
+ enabled or when arbitrary keywords ("PERMANENT FLAGS \*") are permitted.
+ RFC 4550, paragraph 2.8.
+ - Added support for authorization identifier in IMAP backend, for SASL
+ authentication mechanisms PLAIN and DIGEST-MD5. This can be set upon login
+ by use of an external plugin.