Thank you Aki, for your quick response.

*dovecot-shared* file flag should actually enable the *INDEXPVT *setting in the NameSpace for each mailbox it has been created in, as it did for INDEX setting.

Below folows the output of the dovecot -n command:

auth_mechanisms = plain login disable_plaintext_auth = no imap_capability = +SPECIAL-USE XLIST listen = *,[::] lmtp_rcpt_check_quota = yes log_timestamp = "%Y-%m-%d %H:%M:%S " mail_attachment_dir = /ZSAFEMAIL/ATTACHED/attached mail_attachment_min_size = 64 k mail_max_userip_connections = 100 mail_plugins = quota acl mail_privileged_group = vmail namespace { inbox = no list = yes location = sdbox:/var/vmail/PublicFolders:LAYOUT=fs:DIRNAME=dbox-MailFolder:INDEXPVT=~/Maildir/public prefix = PublicFolders/ separator = / subscriptions = no type = public } 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 = / subscriptions = yes type = private } passdb { args = /etc/dovecot/dovecot-sql-master.conf.ext driver = sql master = yes pass = yes } passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { acl = vfile quota = dict:user::file:/var/vmail/%d/%n/.quotausage quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 Mailbox is full quota_status_success = DUNNO sieve = /var/vmail/%d/%n/.sieve sieve_after = /var/vmail/%d/%n/.ispconfig.sieve sieve_before = /var/vmail/%d/%n/.ispconfig-before.sieve sieve_max_actions = 100 sieve_max_redirects = 25 sieve_max_script_size = 2M } protocols = imap pop3 lmtp service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0600 user = vmail } user = root } service imap-login { client_limit = 1000 process_limit = 512 } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service quota-status { client_limit = 1 executable = quota-status -p postfix unix_listener /var/spool/postfix/private/quota-status { group = postfix mode = 0660 user = postfix } } service stats { unix_listener stats-reader { group = vmail mode = 0660 user = vmail } unix_listener stats-writer { group = vmail mode = 0660 user = vmail } } ssl_cert =

Is it a bug of some kind?

Thank you,

Panos.

On 29/3/2021 08:43, Aki Tuomi wrote:

...

On 29/03/2021 02:28 Panayiotis Fafakos pfaf@wisdomsoftware.net wrote:

Dear Timo,

we have successfully used dovecot-shared file flag in MaildirPublicNameSpaces with private index files, to have per-user-seen flags for some but not all mailboxesunder public folders. This was actually done on older dovecot versions (i.e dovecot v2.2.33.2) , using a location setting in dovecot.conf like: location = maildir:/var/vmail/PublicFolders:LAYOUT=fs:DIRNAME=privDirMailFolder:INDEX=~/Maildir/public

We try to use similar location setting using sdbox storage in dovecot v2.3.4.1, like below: location = sdbox:/var/vmail/PublicFolders:LAYOUT=fs:DIRNAME=dbox-MailFolder:INDEXPVT=~/Maildir/public but the dovecot-sharedfile flag seems to be ignored. As a result all mailboxes under public folders use the per-user-seen flags setting as set in the location setting, regardless of the existence of the dovecot-shared file flag or not.

Is there any setting to use so that only some mailboxes under public folders use per-user-seen flags?

Thank you in advance for your support,

Panos Fafakos.

Hi Panos,

INDEXPVT is a namespace level setting, not per-folder setting. I cannot see any "dovecot-sharedfile" flag, maybe provide doveconf -n?

Aki