report-ham: line 1: error: require command: unknown Sieve capability `vnd.dovecot.pipe'.

report-ham: line 1: error: require command: unknown Sieve capability `imapsieve'.

report-ham: line 19: error: unknown command 'pipe' (only reported once at first occurrence).

report-ham: error: validation failed.

sievec(root): Fatal: failed to compile sieve script 'sieve-scripts/report-ham.sieve'

protocol imap {

  mail_plugins = $mail_plugins imap_sieve imap_acl

  mail_max_userip_connections = 50

plugin {

sieve_plugins = sieve_imapsieve sieve_extprograms

  # From elsewhere to Spam folder

  imapsieve_mailbox1_name = Spam

  imapsieve_mailbox1_causes = COPY

  imapsieve_mailbox1_before = file:/etc/dovecot/sieve-scripts/report-spam.sieve

  # From Spam folder to elsewhere

  imapsieve_mailbox2_name = *

  imapsieve_mailbox2_from = Spam

  imapsieve_mailbox2_causes = COPY

  imapsieve_mailbox2_before = file:/etc/dovecot/sieve-scripts/report-ham.sieve

#

sieve_pipe_bin_dir = /etc/dovecot/sieve-scripts

sieve_global_extensions = +vnd.dovecot.execute +vnd.dovecot.pipe

	}

}