Fatal: Error in configuration file /etc/dovecot/dovecot.conf: protocols: Unknown protocol: sieve

[Paul Smith]

Here is the output from dovecot -n

# 2.2.9: /etc/dovecot/dovecot.conf
# OS: Linux 3.13.0-32-generic x86_64 Ubuntu 14.04.2 LTS ext4
auth_mechanisms = plain login
auth_verbose = yes
log_path = /var/log/dovecot.log
mail_debug = yes
mail_location = maildir:/var/mail/vhosts/%d/%n
namespace inbox {
inbox = yes
location =
mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
}
passdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
plugin {
sieve = ~/.dovecot.sieve
sieve_dir = ~/sieve
}
protocols = lmtp imap pop3 sieve
service auth-worker {
user = vmail
}
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0666
user = postfix
}
unix_listener /var/spool/postfix/private/dovecot-auth {
group = postfix
mode = 0660
user = postfix
}
unix_listener auth-userdb {
mode = 0600
user = vmail
}
user = dovecot
}
service imap-login {
inet_listener imap {
port = 0
}
}
service lmtp {
unix_listener /var/spool/postfix/private/lmtp {
group = postfix
mode = 0600
user = postfix
}
}
service pop3-login {
inet_listener pop3 {
port = 0
}
}
ssl_cert = </etc/dovecot/dovecot.pem
ssl_cipher_list = ALL:!LOW:!SSLv2:ALL:!aNULL:!ADH:!eNULL:!EXP:RC4+RS
A:+HIGH:+MEDIUM
ssl_key = </etc/dovecot/private/dovecot.pem
userdb {
args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n
driver = static
}
doveconf: Error: protocols: Unknown protocol: sieve
protocol lda {
deliver_log_format = msgid=%m: %$
mail_plugins = sieve
postmaster_address = postmaster
quota_full_tempfail = yes
rejection_reason = Your message to <%t> was automatically rejected:%n%r
}
protocol imap {
imap_client_workarounds = delay-newmail
mail_max_userip_connections = 10
}
protocol pop3 {
mail_max_userip_connections = 10
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
}
doveconf: Fatal: Error in configuration file /etc/dovecot/dovecot.conf:
protocols: Unknown protocol: sieve


PS dovecot-sieve is installe. Also this error appears without sieve in the
list of protocols in /etc/dovecot/dovecot.conf