Rspamd (Ubuntu 18.04)

Installation

sudo apt-get install

plugin {
    sieve_plugins = sieve_imapsieve sieve_extprograms
    sieve_before = /var/vmail/sieve/global/spam-global.sieve
    sieve = file:/var/vmail/sieve/%d/%n/scripts;active=/var/vmail/sieve/%d/%n/active-script.sieve

    ###
    ### Spam learning
    ###
    # From elsewhere to Spam folder
    imapsieve_mailbox1_name = Spam
    imapsieve_mailbox1_causes = COPY
    imapsieve_mailbox1_before = file:/var/vmail/sieve/global/learn-spam.sieve

    # From Spam folder to elsewhere
    imapsieve_mailbox2_name = *
    imapsieve_mailbox2_from = Spam
    imapsieve_mailbox2_causes = COPY
    imapsieve_mailbox2_before = file:/var/vmail/sieve/global/learn-ham.sieve

    sieve_pipe_bin_dir = /usr/bin
    sieve_global_extensions = +vnd.dovecot.pipe

    quota = maildir:User quota
    quota_exceeded_message = Benutzer %u hat das Speichervolumen überschritten. / User %u has exhausted allowed storage space.
}