Migrating to Docker 2.4.1 not show Mailbox elements

14 Jun 2025 · *:bytes=', quota) AS userdb_quota_rule, concat('*


      Hi,
I'm migrating my physical Dovecot Server 2.2.33.2 to a new 2.4.1
(latest) on Docker container installation.
I've got auth process successfully (Mariadb + Wforce included), but I
cannot see their Maildir mailbox structure and elements, and logging
debug not show errors related.
I detected in my probe account that when I make logging with the new
installation, a new "Maildir" directory into Mailbox structure disk is
created, as unique difference that I noted, and perhaps would be a
symptom, but I'm not sure.
...
imap(probe@mydomain)<20><BpSIoIY3GIpYDjFl>: Info: Mailbox INBOX: Mailbox
created
...
--- "probe@mydomain" account disk structure ---
drwxrwsr-x  7 mail    dovecot  4096 dic 19 09:33  ..
drwx--S---  3 dovecot dovecot  4096 jun 14 13:40  Maildir
drwxrwsr-x  2 dovecot dovecot  4096 jun 13 20:12  tmp
drwxrwsr-x  2 dovecot dovecot  4096 jun 14 12:42  new
drwxrwsr-x  2 dovecot dovecot 16384 jun 14 12:47  cur
drwx--S---  3 dovecot dovecot  4096 jun  3 16:02  sieve
drwxrwsr-x  5 dovecot dovecot  4096 jun 14 12:57  .Sent
drwxrwsr-x  5 dovecot dovecot  4096 nov  9  2020  .spam
drwxrwsr-x  5 dovecot dovecot  4096 abr 30  2019  .Drafts
drwxrwsr-x  5 dovecot dovecot  4096 jun 14 12:47  .Trash
-rw-------  1 dovecot dovecot   212 jul 28  2019  .dovecot.svbin
-rw-rw-r--  1 dovecot dovecot   656 feb 11 02:09  dovecot.index
-rw-rw-r--  1 dovecot dovecot 31832 jun 14 12:47  dovecot.index.cache
-rw-rw-r--  1 dovecot dovecot 26252 jun 14 12:57  dovecot.index.log
-rw-rw-r--  1 dovecot dovecot  7420 ene 16 14:32  dovecot.list.index.log
-rw-rw-r--  1 dovecot dovecot    29 may  4  2019  dovecot-acl-list
-rw-rw-r--  1 dovecot dovecot    10 oct 31  2020  dovecot-keywords
-rw-------  1 dovecot dovecot   240 dic 26 16:37  dovecot.mailbox.log
-rw-------  1 dovecot dovecot     8 dic 26 16:37  dovecot-uidvalidity
-r--r--r--  1 dovecot dovecot     0 abr 19  2019
dovecot-uidvalidity.5cb9d075
-rw-rw-r--  1 dovecot dovecot   909 jun 13 20:12  dovecot-uidlist
-rw-rw-r--  1 dovecot dovecot    87 dic 26 16:37  subscriptions
--- old other account disk structure ---
drwxrwsr-x  7 mail    dovecot  4096 dic 19 09:33 ..
drwxrwsr-x  2 dovecot dovecot  4096 oct  8  2024 tmp
drwxrwsr-x  2 dovecot dovecot  4096 oct  8  2024 new
drwxrwsr-x  2 dovecot dovecot  4096 oct  8  2024 cur
drwx--S---  3 dovecot dovecot  4096 may 27 23:38 sieve
drwxrwsr-x  5 dovecot dovecot  4096 abr  2 15:37 .Sent
drwxrwsr-x  5 dovecot dovecot  4096 may 26 17:03 .spam
drwxrwsr-x  5 dovecot dovecot  4096 abr 30  2019 .Drafts
drwxrwsr-x  5 dovecot dovecot  4096 sep  4  2020 .Trash
lrwxrwxrwx  1 dovecot dovecot    23 may  4  2019 .dovecot.sieve ->
sieve/managesieve.sieve
-rw-------  1 dovecot dovecot   264 may  5  2019 .dovecot.svbin
-rw-rw-r--  1 dovecot dovecot   816 oct 17  2019 dovecot.index
-rw-rw-r--  1 dovecot dovecot 30152 abr  2 15:35 dovecot.index.log
-rw-rw-r--  1 dovecot dovecot 30884 abr  2 15:35 dovecot.index.cache
-rw-rw-r--  1 dovecot dovecot   146 may  3  2019 dovecot.index.thread
-rw-rw-r--  1 dovecot dovecot    13 may  2  2019 dovecot-keywords
-rw-rw-r--  1 dovecot dovecot   240 oct 17  2019 dovecot.mailbox.log
-rw-------  1 dovecot dovecot     8 oct 17  2019 dovecot-uidvalidity
-rw-rw-r--  1 dovecot dovecot  1773 oct  8  2024 dovecot-uidlist
-rw-rw-r--  1 dovecot dovecot    54 oct 17  2019 subscriptions
This is my new Docker installation config:
2.4.1 (7d8c0e5759): /etc/dovecot/dovecot.conf
Pigeonhole version 2.4.1 (0a86619f)
OS: Linux 4.15.0 x86_64 Debian 12.11
Hostname: midovecot
4 default setting changes since version 2.4.0
dovecot_config_version = 2.4.0
auth_allow_weak_schemes = yes
auth_debug_passwords = yes
auth_mechanisms = plain login cram-md5
auth_verbose_passwords = yes
debug_log_path = /dev/stdout
default_internal_group = vmail
default_internal_user = vmail
default_login_user = vmail
deliver_log_format = msgid=%{msgid}: %{message} (subject=%{subject}
from=%{from} To=%{to_envelope} size=%{size})
dovecot_storage_version = 2.4.0
first_valid_gid = 119
first_valid_uid = 108
import_environment {
CORE_ERROR = %{env:CORE_ERROR}
CORE_OUTOFMEM = %{env:CORE_OUTOFMEM}
MALLOC_MMAP_THRESHOLD_ = 131072
PATH = %{env:PATH}
TZ = %{env:TZ}
}
instance_name = midovecot
last_valid_gid = 119
last_valid_uid = 108
log_debug = category=mail
log_path = /dev/stdout
mail_driver = maildir
mail_gid = vmail
mail_home = /var/mail/%{user|lower}
mail_log_events = delete undelete expunge copy mailbox_create
mailbox_delete mailbox_rename flag_change append
mail_plugins {
notify = yes
mail_log = yes
acl = yes
quota = yes
}
mail_uid = vmail
mail_utf8_extensions = yes
mailbox_list_layout = index
mailbox_list_utf8 = yes
protocols = imap lmtp
sql_driver = mysql
state_dir = /run/dovecot
service imap-login {
client_limit = 100
process_min_avail = 1
inet_listener imap {
port = 0
}
inet_listener imaps {
port = 31993
ssl = yes
}
}
service imap {
}
service pop3-login {
inet_listener pop3 {
port = 0
}
inet_listener pop3s {
port = 0
ssl = yes
}
}
service pop3 {
}
service submission-login {
inet_listener submission {
port = 31587
}
inet_listener submissions {
port = 31465
}
}
service submission {
}
service managesieve-login {
client_limit = 100
process_min_avail = 1
inet_listener sieve {
port = 34190
}
inet_listener sieve_deprecated {
port = 2000
}
}
service managesieve {
}
service lmtp {
unix_listener lmtp {
}
}
service auth {
unix_listener auth-userdb {
}
}
service auth-worker {
}
service dict {
unix_listener dict {
}
}
service stats {
process_min_avail = 1
inet_listener http {
port = 9090
}
}
service doveadm {
inet_listener http {
port = 8080
ssl = yes
}
}
mysql mimariadb {
dbname = xxxxxx
password = # hidden, use -P to show it
user = xxxxxxx
}
passdb sql {
default_password_scheme = CRYPT
query = SELECT username, domain, home AS userdb_home, uid AS
userdb_uid, gid AS userdb_gid, (CASE WHEN '%{mechanism}' = 'CRAM-MD5'
THEN crampassword ELSE password END) AS password, concat('*:bytes=',
quota) AS
userdb_quota_rule, concat('*:messages=', quotamsgs) AS
userdb_quota_rule3 FROM users WHERE username = '%{user|username}' AND
domain = '%{user|domain}' AND active = 'Y'
}
userdb sql {
iterate_query = SELECT username,domain AS user FROM users
query = SELECT home, uid, gid, concat('*:bytes=', quota) AS
quota_rule, concat('*:messages=', quotamsgs) AS quota_rule3 FROM users
WHERE username = '%{ user | username | lower }' AND domain = '%{ user |
domain
| lower }'
}
auth_policy {
hash_nonce = # hidden, use -P to show it
server_api_header = Authorization: Basic d2ZvcmNlOmllcGE
server_url = http://miwforce:8084
}
ssl_server {
cert_file = /dovecot/albertocerts/fullchain.pem
key_file = /dovecot/albertocerts/privkey.pem
key_password = # hidden, use -P to show it
}
namespace inbox {
inbox = yes
separator = /
type = private
mailbox Drafts {
special_use = "\\Drafts"
}
mailbox Junk {
special_use = "\\Junk"
}
mailbox Trash {
auto = subscribe
autoexpunge = 10d
special_use = "\\Trash"
quota_storage_extra = 100M
}
mailbox Sent {
special_use = "\\Sent"
}
mailbox "Sent Messages" {
special_use = "\\Sent"
}
}
namespace shared {
prefix = shared/$user/
type = shared
}
protocol imap {
mail_plugins {
imap_filter_sieve = yes
imap_acl = yes
imap_quota = yes
}
}
protocol lmtp {
mail_plugins {
sieve = yes
}
}
quota "User quota" {
storage_size = 1G
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 /dovecot/albertobin/quota-warning.sh
user = vmail
unix_listener quota-warning {
user = vmail
}
}
Best Regards,
Alberto