procmail:
  driver = accept
  check_local_user
  require_files = ${local_part}:+${home}:+${home}/.procmailrc:+/usr/bin/procmail
  transport = procmail_pipe
  no_verify

uservacation:
  driver = accept
  check_local_user
  # user to put away message in a file called .vacation.msg
  require_files = $home/.vacation.msg
  # do not reply to errors or lists or with ADV in the subject
  condition =  ${if or { \
                {match {$h_precedence:} {(?i)junk|bulk|list}} \
                {eq {$sender_address} {}} \
                {match {$h_subject:} {(ADV|Adv)}} \
                } {no} {yes}}
  # do not reply to errors or bounces or lists
  senders = ! ^.*-request@.*:\
            ! ^bounce-.*@.*:\
            ! ^.*-bounce@.*:\
            ! ^owner-.*@.*:\
            ! ^postmaster@.*:\
            ! ^webmaster@.*:\
            ! ^listmaster@.*:\
            ! ^mailer-daemon@.*:\
            ! ^root@.*
  transport = uservacation_transport
  unseen
  no_verify
  no_expn