dovecot updated to 2.2.24
    
    - Huge header lines could have caused Dovecot to use too much memory
    - dsync: Detect and handle invalid/stale -s state string better.
    - dsync: Fixed crash caused by specific mailbox renames
    - auth: Auth cache is now disabled passwd-file.
    - fts-tika: Don't crash if it returns 500 error
    - dict-redis: Fixed timeout handling
    - SEARCH INTHREAD was crashing
    - stats: Only a single fifo_listeners was supported, making it impossible to
      use both auth_stats=yes and mail stats plugin.
    - SSL errors were logged in separate "Stacked error" log lines instead of as
      part of the disconnection reason.
    - MIME body parser didn't handle properly when a child MIME part's --boundary
      had the same prefix as the parent.
    - pigeonhole updated to 0.4.14
    - extprograms plugin: Fixed epoll() panic caused by closing the output
      FD before the output stream.
    - Made sure that the local part of a mail address is encoded properly
      using quoted string syntax when it is not a dot-atom.