Re: Migration of the Maildir standard from Dovecot 2.3 to Dovecot 2.4

5 Dec 2025


      John Stoffel wrote:
...
...
What is your current 2.3 configuration?  It would be good to be able
to compare them.
That's the old config:
2.3.19.1 (9b53102964): /etc/dovecot/dovecot.conf
Pigeonhole version 0.5.19 (4eae2f79)
OS: Linux 6.1.0-40-amd64 x86_64 Debian 12.12
dict {
sqlquota = mysql:/etc/dovecot/dovecot-dict-sql.conf
}
doveadm_password = # hidden, use -P to show it
doveadm_port = 12345
info_log_path = /var/log/dovecot/dovecot-info.log
listen = *
log_path = /var/log/dovecot/dovecot.log
log_timestamp = "%Y-%m-%d %H:%M:%S "
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c %k
mail_home = /var/vmail/%d/%n
mail_location = maildir:~/
mail_max_userip_connections = 500
mail_plugins = quota acl fts fts_solr
mail_privileged_group = mail
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext
namespace {
list = yes
location = maildir:%%h/:INDEXPVT=~/Shared/%%u
prefix = Shared/%%u/
separator = /
subscriptions = no
type = shared
}
namespace inbox {
inbox = yes
location =
mailbox Archiv {
special_use = \Archive
}
prefix =
separator = /
}
passdb {
driver = pam
}
passdb {
args = /etc/dovecot/dovecot-mysql.conf
driver = sql
}
plugin {
acl = vfile
acl_anyone = allow
acl_shared_dict = file:/var/vmail/shared-mailboxes.db
mail_replica = tcp:192.168.2.6
quota = dict:Userquota::proxy::sqlquota
quota_rule2 = Trash:storage=+100%%
recipient_delimiter = +
sieve = /var/vmail/%d/%n/sieve/active-script.sieve
sieve_before = /var/vmail/sieve/global.sieve
sieve_dir = /var/vmail/%d/%n/sieve/scripts/
sieve_max_script_size = 1M
sieve_quota_max_scripts = 0
sieve_quota_max_storage = 0
}
protocols = imap sieve lmtp pop3
replication_dsync_parameters = -d -n INBOX -l 30 -U
replication_full_sync_interval = 2 mins
service aggregator {
fifo_listener replication-notify-fifo {
user = vmail
}
unix_listener replication-notify {
user = vmail
}
}
service auth {
unix_listener /var/spool/postfix/private/auth_dovecot {
group = postfix
mode = 0660
user = postfix
}
unix_listener auth-master {
mode = 0600
user = vmail
}
unix_listener auth-userdb {
mode = 0600
user = vmail
}
user = root
}
service dict {
unix_listener dict {
group = vmail
mode = 0660
user = vmail
}
}
service doveadm {
inet_listener {
port = 12345
}
}
service imap {
process_limit = 1024
vsz_limit = 1 G
}
service lmtp {
unix_listener /var/spool/postfix/private/dovecot-lmtp {
group = postfix
mode = 0600
user = postfix
}
user = vmail
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
process_min_avail = 2
service_count = 1
vsz_limit = 128 M
}
service managesieve {
process_limit = 256
}
service replicator {
process_min_avail = 1
unix_listener replicator-doveadm {
mode = 0600
user = vmail
}
}
ssl_cert = </etc/letsencrypt/live/mx1.example.com/fullchain.pem
ssl_cipher_list = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305
ssl_key = # hidden, use -P to show it
userdb {
driver = passwd
}
userdb {
args = /etc/dovecot/dovecot-mysql.conf
driver = sql
}
verbose_proctitle = yes
protocol lmtp {
auth_socket_path = /var/run/dovecot/auth-master
mail_plugins = quota sieve acl fts fts_solr
postmaster_address = postmaster@example.com
}
protocol imap {
mail_plugins = quota imap_quota imap_acl acl fts fts_solr
}
protocol sieve {
managesieve_logout_format = bytes=%i/%o
}
remote 127.0.0.1 {
disable_plaintext_auth = no
}
Which shows this:
doveadm mailbox list -u systemmails@example.com
Quarantine
INBOX/vzdump
INBOX/Fail2ban
Drafts
Archive
Trash
Sent
Junk
Shared
INBOX
On mx2 I have exactly the same folder on Linux Debian, but the folder are not shown at Dovecot.

Re: Migration of the Maildir standard from Dovecot 2.3 to Dovecot 2.4

byteme＠linuxmaker.net

2.3.19.1 (9b53102964): /etc/dovecot/dovecot.conf

Pigeonhole version 0.5.19 (4eae2f79)

OS: Linux 6.1.0-40-amd64 x86_64 Debian 12.12

doveadm mailbox list -u systemmails@example.com