dovecot updated to 2.2.33.1, pigeonhole updated to
    Added %{if}, see https://wiki2.dovecot.org/Variables#Conditionals
    sdbox: Mails were always opened when expunging, unless
      mail_attachment_fs was explicitly set to empty.
    lmtp/doveadm proxy: hostip passdb field was ignored, which caused
      unnecessary DNS lookups if host field wasn't an IP
    lmtp proxy: Fix crash when receiving unexpected reply in RCPT TO
    quota_clone: Update also when quota is unlimited (broken in v2.2.31)
    mbox, zlib: Fix assert-crash when accessing compressed mbox
    doveadm director kick -f parameter didn't work
    doveadm director flush <host> resulted flushing all hosts, if <host>
      wasn't an IP address.
    director: Various fixes to handling backend/director changes at
       abnormal times, especially while ring was unsynced.
    director: Use less CPU in imap-login processes when moving/kicking
      many users.
    lmtp: Session IDs were duplicated/confusing with multiple RCPT TOs
      when lmtp_rcpt_check_quota=yes
    LDA Sieve plugin: Fixed sequential execution of LDAP-based scripts. A
      missing LDAP-based script could cause the script sequence to exit earlier.
    sieve-filter: Removed the (now) duplicate utf8 to mutf7 mailbox name
      conversion. This caused problems with mailbox names containing UTF-8
      characters.