- dovecot updated to 2.1.rc3:
  - dsync was merged into doveadm (there is still "dsync" symlink pointing to
    "doveadm", which you can use the old way for now); the preferred ways to
    run dsync are "doveadm sync" (for old "dsync mirror") and "doveadm backup"
  - IMAP SPECIAL-USE extension to describe mailboxes
  - added mailbox {} sections, which deprecate autocreate plugin
  - lib-fs: added "mode" parameter to "posix" backend to specify mode for
    created files/dirs (for mail_attachment_dir)
  - inet_listener names are now used to figure out what type the socket is
    when useful, e.g. naming service auth { inet_listener } to auth-client vs.
    auth-userdb has different behaviour
  - added pop3c (= POP3 client) storage backend
  - LMTP proxying code was simplified, hopefully fixing its problems
  - dsync: don't remove user's subscriptions for subscriptions=no namespaces

- dovecot updated to 2.0.17
  - proxying now supports sending SSL client certificate to server with
    ssl_client_cert/key settings
  - doveadm dump: Added support for dumping dbox headers/metadata
  - fixed memory leaks in login processes with SSL connections
  - vpopmail support was broken in v2.0.16
- allow imap+TLS and pop3+TLS by default