Dovecot 2.4.1 last-login configuration pattern: Unknown setting: pattern (dict_map_key_field_pattern or dict_map_key_field_service_pattern not found either.)

13 May 2025

      Hello,
I am trying to configure last-login plugin for dovecot 2.4.1 and

getting the following error.
doveconf -n
2.4.1-4 (7d8c0e5759): /etc/dovecot/dovecot.conf
Pigeonhole version 2.4.1-4 (0a86619f)
doveconf: Fatal: Error in configuration file

/etc/dovecot/conf.d/30-lastlogin.conf line 24: pattern: Unknown

setting: pattern (dict_map_key_field_pattern or

dict_map_key_field_service_pattern not found either.)
I am using the example config from the dovecot 2.4 documentation.

https://doc.dovecot.org/2.4.0/core/plugins/last_login.html#mysql-example
Is this a bug in the config parser or in the example config?
doveconf -n output with pattern lines in 30-lastlogin.conf commented:
2.4.1-4 (7d8c0e5759): /etc/dovecot/dovecot.conf
Pigeonhole version 2.4.1-4 (0a86619f)
OS: Linux 6.12.27-amd64 x86_64 Debian 13.0
Hostname: debian.dg4yfa.org
4 default setting changes since version 2.4.0
dovecot_config_version = 2.4.0
auth_mechanisms = plain login
auth_username_format = %{user|username|lower}
dovecot_storage_version = 2.4.0
first_valid_uid = 1000
fts_autoindex = yes
fts_autoindex_max_recent_msgs = 999
fts_search_add_missing = yes
imapsieve_url = sieve://127.0.0.1:4190
language_filters = normalizer-icu snowball stopwords
language_tokenizers = generic email-address
last_valid_uid = 65530
lda_mailbox_autocreate = yes
mail_driver = maildir
mail_inbox_path = ~/Maildir/.INBOX
mail_path = ~/Maildir
mail_plugins {
virtual = yes
fts = yes
fts_flatcurve = yes
quota = yes
}
mail_privileged_group = mail
protocols {
imap = yes
lmtp = yes
sieve = yes
pop3 = yes
}
quota_storage_size = 1G
sieve_execute_bin_dir = /usr/share/dovecot-pigeonhole/sieve
sieve_global_extensions {
vnd.dovecot.pipe = yes
vnd.dovecot.execute = yes
}
sieve_pipe_bin_dir = /usr/share/dovecot-pigeonhole/sieve
sieve_plugins = sieve_imapsieve sieve_extprograms
passdb pam {
}
userdb passwd {
result_failure = return-fail
result_success = continue
}
userdb passwd-file {
auth_username_format = %{user | username}
passwd_file_path = /etc/dovecot/users
driver = passwd-file
result_failure = return-ok
result_internalfail = continue
}
namespace inbox {
inbox = yes
mailbox Drafts {
special_use = "\\Drafts"
}
mailbox Entw&APw-rfe {
special_use = "\\Drafts"
}
mailbox Junk {
special_use = "\\Junk"
}
mailbox Spam {
special_use = "\\Junk"
}
mailbox Trash {
special_use = "\\Trash"
quota_storage_extra = 100M
}
mailbox Sent {
special_use = "\\Sent"
}
mailbox "Sent Messages" {
special_use = "\\Sent"
}
}
service imap-login {
inet_listener imap {
}
inet_listener imaps {
}
}
service pop3-login {
inet_listener pop3 {
}
inet_listener pop3s {
}
}
service submission-login {
inet_listener submission {
}
inet_listener submissions {
}
}
service lmtp {
unix_listener lmtp {
}
}
service imap {
}
service pop3 {
}
service submission {
}
service auth {
unix_listener auth-userdb {
}
}
service auth-worker {
}
service dict {
unix_listener dict {
}
}
ssl_server {
cert_file = /etc/dovecot/private/dovecot.pem
key_file = /etc/dovecot/private/dovecot.key
}
protocol lda {
mail_plugins {
sieve = yes
}
}
namespace virtual {
mail_driver = virtual
mail_path = ~/Maildir/virtual
prefix = virtual.
separator = .
}
protocol imap {
mail_plugins {
imap_sieve = yes
virtual = yes
imap_quota = yes
last_login = yes
}
}
protocol lmtp {
auth_username_format = %{user | username | lower}
mail_plugins {
sieve = yes
}
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
inet_listener sieve_deprecated {
port = 2000
}
}
service managesieve {
}
last_login {
key = # hidden, use -P to show it
precision = ms
dict proxy {
name = sql
}
}
dict_server {
dict sql {
sql_driver = mysql
mysql localhost {
dbname = vmail
password = # hidden, use -P to show it
user = vmail
}
dict_map "shared/last-login/$service/$user/$remote_ip" {
sql_table = last_login
dict_map_value_field last_access {
type = uint
}
dict_map_key_field service {
}
dict_map_key_field userid {
}
dict_map_key_field last_ip {
}
}
}
}
language de {
filters = lowercase snowball
}
language en {
default = yes
filters = lowercase snowball english-possessive stopwords
}
fts flatcurve {
substring_search = yes
}
quota "User quota" {
driver = count
quota_warning warn-95 {
quota_storage_percentage = 95
execute quota-warning {
args = 95 %{user}
}
}
quota_warning warn-80 {
quota_storage_percentage = 80
execute quota-warning {
args = 80 %{user}
}
}
}
service quota-warning {
executable = script /usr/local/bin/quota-warning.sh
user = dovecot
unix_listener quota-warning {
user = Debian-exim
}
}
sieve_script personal {
active_path = ~/.dovecot.sieve
driver = file
path = ~/sieve
}
sieve_script default {
driver = file
name = default
path = /etc/dovecot/sieve/default/
type = default
}
mailbox Spam {
sieve_script report-spam {
cause = copy
path = /usr/lib/dovecot/sieve/report-spam.sieve
type = before
}
}
imapsieve_from Spam {
sieve_script report-ham {
cause = copy
path = /usr/lib/dovecot/sieve/report-ham.sieve
type = before
}
}
Thank you,
Michael
--
Michael Borgelt
Email: mborgelt@borgelt.org