Hi, I'm new on this mailing list and I'm struggling with the configuration of shared mailboxes. I've followed the following documentation page : https://doc.dovecot.org/configuration_manual/shared_mailboxes/shared_mailboxes/ and manage to had it working for something like 2 minutes, but then changed a parameter and can't get it back working (and of course I don't remember which one it was). I'm using dovecot 2.3.13 . user at hostname:~# dovecot -n # 2.3.13 (89f716dc2): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.13 (cdd19fe3) # OS: Linux 5.10.0-19-amd64 x86_64 Debian 11.5 # Hostname: hostname auth_mechanisms = plain login dict { ? acl = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } mail_debug = yes mail_home = /var/vmail/%d/%n mail_location = maildir:~/ mail_plugins = acl 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:/var/mail/vmail/%%d/%%n/Maildir:INDEXPVT=/var/mail/vmail/%%d/%%n/Maildir/shared/%n ? prefix = shared/%%u/ ? separator = / ? subscriptions = no ? type = shared } namespace inbox { ? inbox = yes ? location ? mailbox Drafts { ??? special_use = \Drafts ? } ? mailbox Junk { ??? special_use = \Junk ? } ? mailbox Sent { ??? special_use = \Sent ? } ? mailbox "Sent Messages" { ??? special_use = \Sent ? } ? mailbox Trash { ??? special_use = \Trash ? } ? prefix ? separator = / ? type = private } passdb { ? args = /etc/dovecot/dovecot-sql.conf.ext ? driver = sql } plugin { ? acl = vfile ? acl_shared_dict = proxy::acl ? sieve = file:~/sieve;active=~/.dovecot.sieve } protocols = " imap sieve" service auth { ? unix_listener /var/spool/postfix/private/auth { ??? group = postfix ??? mode = 0660 ??? user = postfix ? } ? unix_listener auth-userdb { ??? mode = 0600 ??? user = vmail ? } ? user = dovecot } ssl_cert = </etc/letsencrypt/live/domain/fullchain.pem ssl_client_ca_dir = /etc/ssl/certs ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { ? args = uid=vmail gid=vmail home=/var/mail/vmail/%d/%n ? driver = static } protocol imap { ? mail_plugins = acl imap_acl imap_acl } protocol lda { ? mail_plugins = acl sieve } This is the content of dovecot-dict-sql.conf.ext : cat dovecot-dict-sql.conf.ext # This file is commonly accessed via dict {} section in dovecot.conf connect = host=localhost dbname=my_dbname user=my_admin_db_user password=my_password map { ? pattern = shared/shared-boxes/user/$to/$from ? table = user_shares ? value_field = dummy ? fields { ??? from_user = $from ??? to_user = $to ? } } map { ? pattern = shared/shared-boxes/anyone/$from ? table = anyone_shares ? value_field = dummy ? fields { ??? from_user = $from ? } } Now, I have configured some rigth through SOGo interface as I need to use it. With doveadm I can see the good rights : doveadm acl get -u user1 at domain INBOX ID??????????????????????????????????? Global Rights user=user2 at devops.algoo.net???????? lookup read user=user3 at devops.algoo.net??????? admin create delete expunge insert lookup post read write write-deleted write-seen This this the output I have from journalctl -f command with debug enabled when trying to access to the shared folder within SOGo : Nov 15 17:51:14 hostname dovecot[269267]: imap-login: Login: user=<user3 at domain>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=270025, secured, session=<UL//KYXt7ul/AAAB> Nov 15 17:51:14 hostname dovecot[269267]: imap(user3user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: Loading modules from directory: /usr/lib/dovecot/modules Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: Module loaded: /usr/lib/dovecot/modules/lib01_acl_plugin.so Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: Module loaded: /usr/lib/dovecot/modules/lib02_imap_acl_plugin.so Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: Effective uid=5000, gid=5000, home=/var/mail/vmail/domain/user3 Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: Namespace inbox: type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/ Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: maildir++: root=/var/mail/vmail/domain/user3, index=, indexpvt=, control=, inbox=/var/mail/vmail/domain/user3, altNov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: acl: owner = 1 Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: Namespace : type=shared, prefix=shared/%u/, sep=/, inbox=no, hidden=no, list=yes, subscriptions=no location=maildir:/var/mail/vmail/%d/%n/Maildir:INDEXPVT=/var/mail/vmail/%d/%n/Maildir/shared/user3 Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: shared: root=/run/dovecot, index=, indexpvt=, control=, inbox=, altNov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: acl: owner = 0 Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: Mailbox INBOX/folder_i_want_to_share_from_user1_to_user3: Mailbox opened because: SELECT Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Debug: acl vfile: reading file /var/mail/vmail/domain/user3/.INBOX.folder_i_want_to_share_from_user1_to_user3/dovecot-acl Nov 15 17:51:14 hostname dovecot[269267]: imap(user3 at domain)<270025><UL//KYXt7ul/AAAB>: Logged out in=140 out=1521 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0 Nov 15 17:51:15 hostname dovecot[269267]: imap-login: Login: user=<user3 at domain>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=270028, secured, session=<IDgGKoXt/Ol/AAAB> Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: Loading modules from directory: /usr/lib/dovecot/modules Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: Module loaded: /usr/lib/dovecot/modules/lib01_acl_plugin.so Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: Module loaded: /usr/lib/dovecot/modules/lib02_imap_acl_plugin.so Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: Effective uid=5000, gid=5000, home=/var/mail/vmail/domain/user3 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: Namespace inbox: type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/ Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: maildir++: root=/var/mail/vmail/domain/user3, index=, indexpvt=, control=, inbox=/var/mail/vmail/domain/user3, altNov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: acl: owner = 1 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: Namespace : type=shared, prefix=shared/%u/, sep=/, inbox=no, hidden=no, list=yes, subscriptions=no location=maildir:/var/mail/vmail/%d/%n/Maildir:INDEXPVT=/var/mail/vmail/%d/%n/Maildir/shared/user3 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: shared: root=/run/dovecot, index=, indexpvt=, control=, inbox=, altNov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: acl: owner = 0 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:15 hostname dovecot[269267]: imap-login: Login: user=<user3 at domain>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=270029, secured, session=<7mIGKoXtAOp/AAAB> Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: Loading modules from directory: /usr/lib/dovecot/modules Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: Module loaded: /usr/lib/dovecot/modules/lib01_acl_plugin.so Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: Module loaded: /usr/lib/dovecot/modules/lib02_imap_acl_plugin.so Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: Effective uid=5000, gid=5000, home=/var/mail/vmail/domain/user3 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: Namespace inbox: type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/ Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: maildir++: root=/var/mail/vmail/domain/user3, index=, indexpvt=, control=, inbox=/var/mail/vmail/domain/user3, altNov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: owner = 1 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: Namespace : type=shared, prefix=shared/%u/, sep=/, inbox=no, hidden=no, list=yes, subscriptions=no location=maildir:/var/mail/vmail/%d/%n/Maildir:INDEXPVT=/var/mail/vmail/%d/%n/Maildir/shared/user3 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: shared: root=/run/dovecot, index=, indexpvt=, control=, inbox=, altNov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: owner = 0 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl vfile: file /var/mail/vmail/domain/user3/dovecot-acl not found Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl vfile: reading file /var/mail/vmail/domain/user3/.INBOX.folder_i_want_to_share_from_user1_to_user3/dovecot-acl Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: Mailbox INBOX: Mailbox opened because: SELECT Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Debug: acl vfile: file /var/mail/vmail/domain/user3/dovecot-acl not found Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: maildir++: root=/var/mail/vmail/domain/user1/Maildir, index=, indexpvt=/var/mail/vmail/domain/user1/Maildir/shared/user3, control=, inbox=/var/mail/vmail/domain/user1/Maildir, altNov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: acl username = user1 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: owner = 1 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: maildir++: root=/var/mail/vmail/domain/user1/Maildir, index=, indexpvt=/var/mail/vmail/domain/user1/Maildir/shared/user3, control=, inbox=/var/mail/vmail/domain/user1/Maildir, altNov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: owner = 0 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl: Mailbox not in dovecot-acl-list: shared/user1 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: acl vfile: file /var/mail/vmail/domain/user1/Maildir/dovecot-acl not found Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Debug: Namespace shared/: Using permissions from : mode=0700 gid=default Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270028><IDgGKoXt/Ol/AAAB>: Logged out in=198 out=1581 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270029><7mIGKoXtAOp/AAAB>: Logged out in=125 out=1417 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0 Nov 15 17:51:15 hostname dovecot[269267]: imap-login: Login: user=<user3 at domain>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=270033, secured, session=<B4gIKoXtDOp/AAAB> Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: Loading modules from directory: /usr/lib/dovecot/modules Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: Module loaded: /usr/lib/dovecot/modules/lib01_acl_plugin.so Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: Module loaded: /usr/lib/dovecot/modules/lib02_imap_acl_plugin.so Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: Effective uid=5000, gid=5000, home=/var/mail/vmail/domain/user3 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: Namespace inbox: type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/ Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: maildir++: root=/var/mail/vmail/domain/user3, index=, indexpvt=, control=, inbox=/var/mail/vmail/domain/user3, altNov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: acl: owner = 1 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: Namespace : type=shared, prefix=shared/%u/, sep=/, inbox=no, hidden=no, list=yes, subscriptions=no location=maildir:/var/mail/vmail/%d/%n/Maildir:INDEXPVT=/var/mail/vmail/%d/%n/Maildir/shared/user3 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: shared: root=/run/dovecot, index=, indexpvt=, control=, inbox=, altNov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: acl: owner = 0 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: Mailbox INBOX/folder_i_want_to_share_from_user1_to_user3: Mailbox opened because: SELECT Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Debug: acl vfile: reading file /var/mail/vmail/domain/user3/.INBOX.folder_i_want_to_share_from_user1_to_user3/dovecot-acl Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270033><B4gIKoXtDOp/AAAB>: Logged out in=313 out=2117 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=2 body_count=0 body_bytes=0 Nov 15 17:51:15 hostname dovecot[269267]: imap-login: Login: user=<user3 at domain>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=270037, secured, session=<nRkMKoXtFup/AAAB> Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: Loading modules from directory: /usr/lib/dovecot/modules Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: Module loaded: /usr/lib/dovecot/modules/lib01_acl_plugin.so Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: Module loaded: /usr/lib/dovecot/modules/lib02_imap_acl_plugin.so Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: Effective uid=5000, gid=5000, home=/var/mail/vmail/domain/user3 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: Namespace inbox: type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/ Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: maildir++: root=/var/mail/vmail/domain/user3, index=, indexpvt=, control=, inbox=/var/mail/vmail/domain/user3, altNov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: acl: owner = 1 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: Namespace : type=shared, prefix=shared/%u/, sep=/, inbox=no, hidden=no, list=yes, subscriptions=no location=maildir:/var/mail/vmail/%d/%n/Maildir:INDEXPVT=/var/mail/vmail/%d/%n/Maildir/shared/user3 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: shared: root=/run/dovecot, index=, indexpvt=, control=, inbox=, altNov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: acl: initializing backend with data: vfile Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: acl: acl username = user3 at domain Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: acl: owner = 0 Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: acl vfile: Global ACLs disabled Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: Mailbox INBOX: Mailbox opened because: SELECT Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: acl vfile: file /var/mail/vmail/domain/user3/dovecot-acl not found Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: Mailbox INBOX/folder_i_want_to_share_from_user1_to_user3: Mailbox opened because: SELECT Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Debug: acl vfile: reading file /var/mail/vmail/domain/user3/.INBOX.folder_i_want_to_share_from_user1_to_user3/dovecot-acl Nov 15 17:51:15 hostname dovecot[269267]: imap(user3 at domain)<270037><nRkMKoXtFup/AAAB>: Logged out in=218 out=1925 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0 I tried with thunderbird too but no folders appears neither. Do you have any clue on which parameter do I need to change in order to get it working? Thank you very much for any help provided. Quiwy -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://dovecot.org/pipermail/dovecot/attachments/20221115/3c2a879c/attachment-0001.htm>