Migrating from 2.3 to 2.4 Maildir Config Problems

13 Feb 2025


      Greetings,
We've been using Dovecot since 2007, and I'm migrating yet again to a
new version of Dovecot.
Going from 2.3 to 2.4 and a lot of things have changed.  I've been able
to manage many of them, but I'm stuck on Maildir configuration, and I'm
unable to understand the documentation as relates to this.  Hopefully
someone can clarify.
Error: Initializing mail storage from mail_driver=maildir setting
failed: maildir: maildir settings: Failed to parse configuration: Failed
to override configuration from userdb: Invalid maildir=gcmm.net/test/:
Setting is a named filter, use 'maildir {'
Here's my doveconf as it has been migrated from 2.3 to 2.4 thus far.  I
realize that there are probably better ways to do things and I'm open to
suggestions, but keep in mind that this is a production set up with
hundreds of users and I've tried to maintain backwards compatibility
through the years.
Thanks for your assistance,
Asai
# 2.4.0 (daeb6bc59c): /etc/dovecot/dovecot.conf
# Pigeonhole version 2.4.0 (1b2d5bb9)
# OS: Linux 5.14.0-503.23.1.el9_5.x86_64 x86_64 AlmaLinux release 9.5
(Teal Serval) xfs
# Hostname: xxxxx
dovecot_config_version = 2.4.0
auth_allow_weak_schemes = yes
auth_mechanisms =
auth_mechanisms {
plain = yes
login = yes
}
auth_verbose_passwords = plain
debug_log_path = /var/log/dovecot-debug.log
default_vsz_limit = 512M
deliver_log_format = msgid=%{msgid}: from=%{from}:
%{deliver_log_format_extras}
dovecot_storage_version = 2.4.0
hostname = xx.xxxx.xxxx
log_path = /var/log/dovecot.log
mail_driver = maildir
mail_fsync = always
#mail_home = /vmail/%{user | domain }/%{user | username }/home
mail_log_events {
delete = yes
undelete = yes
expunge = yes
copy = yes
mailbox_delete = yes
mailbox_rename = yes
flag_change = yes
append = yes
}
mail_log_fields {
uid = yes
box = yes
msgid = yes
from = yes
flags = yes
}
#mail_path = /vmail/%{user | domain }/%{user | username }
mmap_disable = yes
protocols {
imap = yes
lmtp = yes
sieve = yes
}
sql_driver = mysql
submission_relay_host = xxxx.xxxx.xxxxx
submission_relay_port = 587
submission_relay_ssl = starttls
submission_relay_trusted = yes
syslog_facility = local5
mysql localhost {
dbname = xxxx
password = xxxxx
user = postfix
}
passdb sql {
default_password_scheme = PLAIN-MD5
query = SELECT password FROM mailbox WHERE username = '%{user}'
}
userdb sql {
iterate_query = select username from mailbox;
query = SELECT maildir, concat('/vmail/',maildir,'home') as home,
1001 AS uid, 1001 AS gid FROM mailbox WHERE username = '%{user}' and
active = 1
}
#namespace inbox {
#  inbox = yes
#  prefix =
#  separator = /
#  type = private
#mailbox Drafts {
#  auto = subscribe
#  special_use {
#    "\\Drafts" = yes
#  }
#}
#mailbox Junk {
#  auto = subscribe
#  special_use {
#    "\\Junk" = yes
#  }
#}
#mailbox Spam {
#  special_use {
#    "\\Junk" = yes
#  }
#}
#mailbox Trash {
#  auto = subscribe
#  special_use {
#    "\\Trash" = yes
#  }
#}
#mailbox Sent {
#  auto = subscribe
#  special_use {
#    "\\Sent" = yes
#  }
#}
#mailbox "Sent Messages" {
#  special_use {
#    "\\Sent" = yes
#  }
#}
#mailbox "Sent Items" {
#  special_use {
#    "\\Sent" = yes
#  }
#}
#}
#namespace empty {
#  prefix =
#  separator = /
#  alias_for = inbox
#  subscriptions = yes
#  mailbox_list_index_prefix =
#}
maildir {
broken_filename_sizes = yes
mail_path = /vmail/%{user | domain }/%{user | username }
mail_home = /vmail/%{user | domain }/%{user | username }/home
}
service imap-login {
restart_request_count = unlimited
inet_listener imap {
port = 143
}
inet_listener imaps {
port = 993
ssl = yes
}
}
service lmtp {
vsz_limit = 512M
unix_listener /var/spool/postfix/private/dovecot-lmtp {
group = postfix
mode = 0660
user = postfix
}
}
service imap {
process_limit = 4096
vsz_limit = 1024 MB
}
service auth {
user = root
unix_listener auth-master {
group = vmail
mode = 0660
user = vmail
}
unix_listener auth-userdb {
group = vmail
mode = 0666
user = vmail
}
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0660
user = postfix
}
}
service auth-worker {
}
service dict {
unix_listener dict {
}
}
ssl_server {
cert_file = /etc/postfix/ssl/server.pem
dh_file = /etc/dovecot/dh.pem
key_file = /etc/postfix/ssl/server.key
}
service stats {
unix_listener stats-reader {
group = vmail
mode = 0660
user = vmail
}
unix_listener stats-writer {
group = vmail
mode = 0660
user = vmail
}
}
protocol lda {
}
protocol imap {
mail_max_userip_connections = 20
mail_plugins {
mail_log = yes
notify = yes
}
}
protocol lmtp {
mail_plugins {
sieve = yes
}
}
service managesieve-login {
process_min_avail = 0
restart_request_count = 1
vsz_limit = 64M
inet_listener sieve {
port = 4190
}
}
service managesieve {
process_limit = 1024
}
sieve_script personal {
active_path = /vmail/%{user | domain }/%{user | username
}/home/.dovecot.sieve
driver = file
path = /vmail/%{user | domain }/%{user | username }/home/sieve
}
sieve_script before {
path = /vmail/sieve/junk-spam.sieve
type = before
}
sieve_script after {
path = /vmail/sieve/junk-spam.sieve
type = after
}
mail_debug = yes
auth_verbose = yes
auth_debug = yes
auth_debug_passwords = yes
log_debug = category=mail