Re: Dovecot 2.4: shared mailboxes not working - maybe related to mail_path

Hi Markus,

This ist the way I configured "shares" and it's still working: (German language)

https://dokuwiki.tachtler.net/doku.php?id=tachtler:dovecot_archlinux_-_shares

Greetings
Klaus.

20.08.2026 18:55:31 Markus Schönhaber via dovecot <[email protected]>:

> 20.08.26, 15:39 +0200, Markus Schönhaber via dovecot:
> 
>> I have configured this (full doveconf -n output attached):
> 
> The list seems to strip text attachments. Therefore the doveconf -n
> output inline:
> 
> 
> # 2.4.4-5+debian13 (8b687aa65c): /etc/dovecot/dovecot.conf
> # Pigeonhole version 2.4.4-5+debian13 (3beb331a)
> # OS: Linux 7.1.8-1-MANJARO x86_64 Debian 13.6 btrfs
> # Hostname: dovecot-template
> dovecot_config_version = 2.4.4
> acl_driver = vfile
> auth_master_user_separator = *
> auth_mechanisms = plain login
> dovecot_storage_version = 2.4.4
> log_debug = category=mail
> login_log_format_elements = user=<%{user}> method=%{mechanism}
> rip=%{remote_ip} lip=%{local_ip} lport=%{local_port} mpid=%{mail_pid}
> %{secured}
> mail_driver = mdbox
> mail_gid = vmail
> mail_home = /var/spool/vmail/home/%{user | domain}/%{user | username}
> mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename
> mail_log_fields = uid box msgid size
> mail_path = /var/spool/vmail/mail/%{user | domain}/%{user | username}
> mail_plugins = quota acl
> mail_uid = vmail
> postmaster_address = [email protected]
> protocols = imap sieve
> sieve_global_extensions {
>   vnd.dovecot.environment = yes
>   vnd.dovecot.execute = yes
>   vnd.dovecot.pipe = yes
> }
> sieve_pipe_bin_dir = /var/spool/vmail/home/3-imapsieve
> sieve_plugins = sieve_imapsieve sieve_extprograms
> sieve_redirect_envelope_from = orig_recipient
> sql_driver = mysql
> verbose_proctitle = yes
> mysql localhost {
>   dbname = postfixadmin
>   password = # hidden, use -P to show it
>   user = postfixadmin
> }
> passdb sql {
>   driver = sql
>   query = SELECT mailbox.username AS user, mailbox.password AS password,
> CONCAT(mailbox.quota, 'B') AS userdb_quota_storage_size, 'vmail' AS
> userdb_uid, 'vmail' AS userdb_gid FROM mailbox INNER JOIN domain ON
> mailbox.domain = domain.domain WHERE mailbox.username = '%{user}' AND
> mailbox.active = '1' AND domain.active = '1'
> }
> userdb prefetch {
>   driver = prefetch
> }
> userdb sql {
>   driver = sql
>   iterate_query = SELECT username AS user FROM mailbox WHERE active = 1
>   query = SELECT username AS user, 'vmail' AS uid, 'vmail' AS gid,
> CONCAT(quota, 'B') AS quota_storage_size FROM mailbox WHERE username =
> '%{user}' AND active='1'
> }
> event_exporter log {
>   driver = log
>   format = json
>   time_format = rfc3339
> }
> metric imap_id {
>   exporter = log
>   filter = event=imap_id_received
> }
> namespace public {
>   mail_home = /var/spool/vmail/home/Public
>   mail_path = /var/spool/vmail/mail/Public
>   list = children
>   prefix = Public/
>   separator = /
>   subscriptions = no
>   type = public
> }
> namespace shared {
>   mail_home = /var/spool/vmail/home/%{owner_domain}/%{owner_username}
>   list = children
>   prefix = shared/$domain/$username/
>   separator = /
>   subscriptions = no
>   type = shared
> }
> namespace inbox {
>   inbox = yes
>   separator = /
> }
> service auth {
>   unix_listener /var/spool/postfix/private/auth {
>     group = postfix
>     mode = 0666
>     user = postfix
>   }
> }
> ssl_server {
>   cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem
>   key_file = /etc/ssl/private/ssl-cert-snakeoil.key
> }
> protocol imap {
>   mail_plugins {
>     imap_acl = yes
>     imap_quota = yes
>     imap_sieve = yes
>   }
> }
> acl_sharing_map {
>   dict file {
>     path = /var/spool/vmail/home/shared-mailboxes
>   }
> }
> quota "User quota" {
> }
> dict_server {
>   dict mysql {
>     driver = sql
>     sql_driver = mysql
>     dict_map priv/quota/messages {
>       sql_table = quota2
>       username_field = username
>       dict_map_value_field messages {
>       }
>     }
>     dict_map priv/quota/storage {
>       sql_table = quota2
>       username_field = username
>       dict_map_value_field bytes {
>       }
>     }
>   }
> }
> quota_clone {
>   dict proxy {
>     name = mysql
>   }
> }
> sieve_script personal {
>   active_path = ~/.dovecot.sieve
>   driver = file
>   path = ~/sieve
> }
> sieve_script after-0 {
>   driver = file
>   path = /var/spool/vmail/home/1-global/sieve/after
>   type = after
> }
> sieve_script before-0 {
>   driver = file
>   path = /var/spool/vmail/home/1-global/sieve/before
>   type = before
> }
> 
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