- dovecot - dovecot.org

Remove attachments
by Oliver Glas 08 Jun '23

08 Jun '23

5 6

Help needed with imap_sieve and mail_crypt plugin
by Robert Senger 08 Jun '23

08 Jun '23

Hi there, I was using imap_sieve for many years now to pipe mails upon user action (moving mails to the SPAM folder) into spamassassin to train spam detection. This worked fine all the time. Now we're moving to encrypted mail storage on per user basis, with encrypted private keys. This works well, but it breaks the spamassassin training upon user action since it would feed encrypted mail into spamassassin, which makes no sense. So, my question is, is there a possibility to call the mail_crypt plugin from imap_sieve to decrypt the email (that means, decrypt the private key with the user password, decrypt the email that's moved to the SPAM folder) before it's piped into spamassassin? Thanks for help! Robert -- Robert Senger

2 2

Repeating imap processes crashes with signal 11 after imapc-client timeout leak
by Nikolaos Pyrgiotis 07 Jun '23

07 Jun '23

Hello, We run a 5 instances dovecot cluster ondebian 11 virtual machines, a dovecot proxy, 2directors and 2dovecot backends. All dovecot instances run version 2.3.20. We use a glusterfs mounted volume on the backends forthe mail storage. Our users all use thunderbird mail client and they do not report any issue with the imap service. Since we have configured the dovecot cluster we see multiple random imap crashes with signal 11 and timeout leaks in the logs on both the backends for multiple users. Is this is a configuration problem or a bug with imapc or imap; I would appreciate if you could assist us to debug this further. A coredump is attached if it helps. The logs look similar to this: Jun 01 16:21:13 doveb0-rmt0-cn1 dovecot[75106]: imap(user(a)domie02.com)<105800><BxSqJw39DLgKZQD+>: Warning: Timeout leak: 0x7f9a92c0c1c0 (imapc-client.c:475) Jun 01 16:21:13 doveb0-rmt0-cn1 dovecot[75106]: imap(user(a)domie02.com)<105800><BxSqJw39DLgKZQD+>: Warning: Raw backtrace for leaks: /usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x42) [0x7f9a92a7e872] -> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7f9a92a7e98e] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_destroy+0x2b5) [0x7f9a92aa21e5] -> /usr/lib/dovecot/libdovecot-storage.so.0(imapc_client_run+0x115) [0x7f9a92c0bcb5] -> /usr/lib/dovecot/libdovecot-storage.so.0(imapc_mailbox_run_nofetch+0x20) [0x7f9a92c089f0] -> /usr/lib/dovecot/libdovecot-storage.so.0(imapc_mailbox_sync_init+0x868) [0x7f9a92c0b198] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x58) [0x7f9a92bbfa68] -> dovecot/imap(imap_sync_init+0x95) [0x5605e4ebbe55] -> dovecot/imap(+0x17343) [0x5605e4ea5343] -> dovecot/imap(cmd_idle+0xb4) [0x5605e4ea5674] -> dovecot/imap(command_exec+0xa4) [0x5605e4eb04d4] -> dovecot/imap(+0x2044f) [0x5605e4eae44f] -> dovecot/imap(+0x204fa) [0x5605e4eae4fa] -> dovecot/imap(client_handle_input+0x1b5) [0x5605e4eae9d5] -> dovecot/imap(client_input+0x70) [0x5605e4eaef40] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x69) [0x7f9a92aa1819] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x132) [0x7f9a92aa2f02] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x50) [0x7f9a92aa18c0] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x40) [0x7f9a92aa1a80] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f9a92a143c3] -> dovecot/imap(main+0x4fa) [0x5605e4e9ff0a] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xea) [0x7f9a927d2d0a] -> dovecot/imap(_start+0x2a) [0x5605e4e9ffca] Jun 01 16:23:49 doveb0-rmt0-cn1 dovecot[75106]: imap(user(a)domie02.com)<105800><BxSqJw39DLgKZQD+>: Fatal: master: service(imap): child 105800 killed with signal 11 (core dumped) Below i post the dovecot configuration of one of the two dovecot backends: # 2.3.20 (80a5ac675d): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.20 (149edcf2) # OS: Linux 5.10.0-23-amd64 x86_64 Debian 11.7 fuse.glusterfs # Hostname: doveb0-rmt0-cn1 auth_cache_negative_ttl = 5 mins auth_cache_size = 50 M auth_default_realm = domie02.com auth_master_user_separator = * auth_mechanisms = plain login auth_verbose = yes auth_worker_max_count = 16 disable_plaintext_auth = no first_valid_uid = 499 hostname = smtp.domie02.com imapc_features = fetch-bodystructure fetch-headers rfc822.size search modseq acl delay-login imapc_host = 10.101.0.250 imapc_max_idle_time = 5 mins imapc_password = # hidden, use -P to show it imapc_sasl_mechanisms = plain login imapc_ssl = starttls imapc_ssl_verify = no last_valid_uid = 499 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes login_greeting = You have successfully logged in to domie02.com IMAP server login_trusted_networks = 10.101.0.74 10.101.0.73 mail_always_cache_fields = flags hdr.* date.received date.sent mail_cache_fields = flags date.received guid size.physical size.virtual imap.bodystructure body.snippet mail_debug = yes mail_fsync = always mail_location = mdbox:/var/vmail/%d/%n/mdbox:VOLATILEDIR=/dev/shm/dovecot/%2.256Nu/%d/%n mail_plugins = " notify mail_log zlib 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 mdbox_rotate_size = 200 M mmap_disable = yes namespace Domie02 { list = children location = imapc:/var/vmail/%d/%n/shared/indexes/%%n:INDEXPVT=/var/vmail/%d/%n/shared-pvt/%%n:VOLATILEDIR=/dev/shm/dovecot/%2.256Nu/%d/%n/%%n prefix = shared.%%n. 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 Spam.Virus { auto = subscribe } mailbox Spam { auto = subscribe } mailbox Trash { special_use = \Trash } prefix = separator = . subscriptions = yes type = private } passdb { args = password=#hidden_use-P_to_show# driver = static master = yes override_fields = allow_real_nets=127.0.0.0/8,local,10.101.0.74,10.101.0.73 userdb_acl_user=%{auth_user} userdb_namespace/Domie02/disabled=yes result_success = continue } passdb { args = password=#hidden_use-P_to_show# driver = static override_fields = allow_real_nets=127.0.0.0/8,local,10.101.0.74,10.101.0.73 result_success = continue } passdb { args = /etc/dovecot/dovecot-ldap-users.conf.ext driver = ldap } passdb { args = /etc/dovecot/dovecot-ldap-groups.conf.ext driver = ldap } plugin { acl = vfile:/etc/dovecot/global-acls/%d/master-dovecot-acl:cache_secs=300 acl_defaults_from_inbox = yes acl_globals_only = no acl_shared_dict =file:/var/dovecot-acl/%d/shared-mailboxes.db imap_compress_deflate_level = 6 mail_log_events = flag_change mail_log_fields = uid box flags sieve =file:~/sieve;active=~/sieve/%n.sieve sieve_before = /var/vmail/global-sieve/global.sieve sieve_env_email_address = %u sieve_env_mailbox_prefix = %{userdb:mailbox_prefix} sieve_global = /var/vmail/sieve sieve_global_extensions = +editheader +vnd.dovecot.environment zlib_save = zstd zlib_save_level = 5 } protocols = " imap lmtp sieve submission" service auth-worker { user = dovecot } service auth { unix_listener auth-userdb { group = mail mode = 0666 user = vmail } } service doveadm { inet_listener dovadm-dom-mgmt { address = 10.100.1.71 port = 8080 ssl = no } inet_listener dovadm-dom { address = 10.101.0.71 port = 8080 ssl = no } vsz_limit = 256 M } service imap-login { inet_listener imap-dom { address = 10.101.0.71 port = 143 ssl = no } inet_listener imap { port = 0 } inet_listener imaps-dom { address = 10.101.0.71 port = 993 ssl = yes } inet_listener imaps { port = 0 } process_limit = 400 process_min_avail = 2 service_count = 20 vsz_limit = 512 M } service imap { process_limit = 2048 process_min_avail = 0 service_count = 1 vsz_limit = 4 G } service lmtp { inet_listener lmtp-dom { address = 10.101.0.71 port = 24 ssl = no } process_limit = 0 process_min_avail = 0 service_count = 0 unix_listener lmtp { mode = 0666 } vsz_limit = 256 M } service managesieve-login { inet_listener sieve-dom { address = 10.101.0.71 port = 4190 ssl = no } inet_listener sieve { port = 0 } process_limit = 0 process_min_avail = 0 service_count = 0 vsz_limit = 64 M } service managesieve { process_limit = 1024 process_min_avail = 0 service_count = 1 vsz_limit = 256 M } service submission-login { inet_listener submission-dom { address = 10.101.0.71 port = 587 ssl = no } inet_listener submission { port = 0 } inet_listener submissions-dom { address = 10.101.0.71 port = 465 ssl = yes } process_limit = 250 process_min_avail = 2 service_count = 1 vsz_limit = 256 M } service submission { process_limit = 1024 process_min_avail = 0 service_count = 1 vsz_limit = 256 M } ssl = required ssl_cert = </etc/ssl/certs/doveb0-rmt0-cn1.mail.rmt.domie02.com.pem ssl_client_ca_dir = /etc/ssl/certs ssl_key = # hidden, use -P to show it submission_max_mail_size = 30000 k submission_relay_host = 10.101.0.7 submission_relay_port = 587 submission_relay_ssl = starttls submission_relay_ssl_verify = no submission_relay_trusted = yes userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-ldap-users.conf.ext driver = ldap } userdb { args = /etc/dovecot/dovecot-ldap-groups.conf.ext driver = ldap } protocol lmtp { mail_plugins = " notify mail_log zlib acl sieve acl" } protocol lda { mail_plugins = " notify mail_log zlib acl sieve acl" } protocol imap { mail_max_userip_connections = 100 mail_plugins = " notify mail_log zlib acl" } protocol sieve { mail_max_userip_connections = 40 } protocol submission { mail_max_userip_connections = 70 } local 10.101.0.71 { doveadm_allowed_commands = doveadm_password = # hidden, use -P to show it } local 10.100.1.71 { doveadm_allowed_commands = doveadm_password = # hidden, use -P to show it } } Thank you, Nikolaos Pyrgiotis

2 1

sieve accepting instructions from email
by Marc 07 Jun '23

07 Jun '23

Before switching to sieve, I used to have something in procmail that would allow you to turn on an auto reply by sending an email. - send email to yourself with request - receive auth code - send auth code and auto reply text - receive confirmation the auto reply is on Is there some solution in sieve (plugin) to configure your sieve rules via such email commands?

2 1

Multiple backends with NFSv4.1 (supports file locking): should work without Director, right?
by pierre.alletru＠gmail.com 05 Jun '23

05 Jun '23

Hi Dovecot community, We're looking at running multiple Dovecot backend servers in parallel, all using the same shared NFSv4.1 mount to store mailboxes in the maildir format. We've read in multiple places that running multiple backends with a shared NFS can result in issues like index files corruption. The standard solution seems to use the Director feature, or some kind of IP based proxy/load balancer. But: 1 - The Director feature will be removed in future free versions of Dovecot (https://dovecot.org/mailman3/archives/list/dovecot@dovecot.org/thread/ILA3C…) 2 - NFSv4 and above support file locking (flock and fcntl, flock being emulated using fcntl). 3 - It looks like Dovecot does use file locking, though we're unsure if it does on everything and in particular on index files. Thus, we are wondering if the need for Director is still relevant with NFSv4? Shouldn't it work without Director thanks to file locking? Has anyone tried it? We're thinking that the documentation and various threads on the subject may be outdated, based on NFSv3 and lower (no file locking). If it doesn't work, anybody knows why? Isn't file locking there precisely to handle concurrency? Thanks!

10 17

attachments storage sub folders
by cor＠soverin.net 04 Jun '23

04 Jun '23

Hi all, we're using a separate attachment storage. Is there a way to control the subfolders that are created for each attachment? Currently the path is <user subfolder>/XX/YY/XXYY<hash>. In practice this means almost every single attachment gets its own 2 subfolders XX/YY. I'm seeing users with 5000 attachments and almost 10.000 folders. Normally this wouldn't be that big of a deal but we're using ZFS storage with metadata special device and this is causing a huge amount of additional folder metadata. It would already be helpful if we could just have a single XX/XX<hash> subfolder per user. Is that possible? Thanks, Cor dovecot 2.3.20 mail_attachment_dir = /data/attachments/%{userdb:folder} mail_attachment_fs = posix mail_attachment_hash = %{sha256:160} mail_attachment_min_size = 128k

1 0

Share
by liecj3＠bfh.ch 01 Jun '23

01 Jun '23

Hello dear Dovecot users I have a somewhat special request: I have a single file in mbox format which I want to make accessible via IMAP to anonymous logins. The mbox file is being updated outside of Dovecot and should not be changeable by Dovecot. So far I created a Docker container based on the official image (https://hub.docker.com/r/dovecot/dovecot) and configured the Dovecot according to https://doc.dovecot.org/configuration_manual/shared_mailboxes/public_shared/. The volume with the mbox file is mounted in the running container under /var/mail. Each time a client tries to access this public mailbox the following error is logged and no content is returned: May 26 21:57:06 imap(mutt)<16><Rkpg0Z/8pLfAqDAB>: Error: Mailbox Public/archive: open() failed with mbox: Read-only file system. Note that I don't need the file to be a shared mailbox. Instead I would also be happy to have all (anonymous) users mapped to the read-only mbox somewhere in the filesystem. Dockerfile: FROM dovecot/dovecot RUN mkdir -p /var/indexes/public RUN chown 1000:1000 /var/indexes/public ADD dovecot.conf /etc/dovecot/dovecot.conf /etc/dovecot/dovecot.conf: ## You should mount /etc/dovecot if you want to ## manage this file mail_home=/srv/mail/%Lu mail_location=sdbox:~/Mail mail_uid=1000 mail_gid=1000 #protocols = imap pop3 submission sieve lmtp protocols = imap first_valid_uid = 1000 last_valid_uid = 1000 passdb { driver = static args = password=pass } ssl=yes ssl_cert=<cert.pem ssl_key=<key.pem namespace { type = private inbox = yes separator = / } namespace { type = public prefix = Public/ location = mbox:/var/mail/:INDEX=/var/indexes/public subscriptions = no } listen = * log_path=/dev/stdout info_log_path=/dev/stdout debug_log_path=/dev/stdout

2 1

Using "forward_" variables in last_login_key
by Eirik Rye 01 Jun '23

01 Jun '23

Hello, In my setup, I am running dovecot with the following last_login config: plugin { last_login_dict = file:~/.last_login last_login_key = %s } I would like to distinguish between logins through webmail (Roundcube) and logins through regular IMAP clients. Roundcube sends "x-forward-service=webmail" in ID, and I have working logging for this by putting the following in login_log_format_elements: service=%{if;%{passdb:forward_service};eq;webmail;webmail;%s} (Is there may be a more elegant way to do this conditional?) This will print `service=webmail` for webmail logins, and `service=imap` for regular IMAP client logins. However, the same conditional does not work in last_login_key: last_login_key = %{if;%{passdb:forward_service};eq;webmail;webmail;%s} Using this, the login fails and the error log outputs the following error: Error: Failed to expand plugin setting last_login_key = '%{if;%{passdb:forward_service};eq;webmail;webmail;%s}': Unknown variable '%passdb' How can I tell which variables are available to use in this plugin? Are the forwarded variables not available? If not, any other suggestions on how to differentiate these logins in last_login? Looking at the remote_ip is not feasible for my setup. Best regards, Eirik

2 1

GSSAPI auth Line too long
by Thomas Lemarchand 31 May '23

31 May '23

Hello, On version 2.3.20 (80a5ac675d), I have a problem with submission-login when using GSSAPI auth : it's not working, probably due to AUTH line being too long. It appeared after I activated PAC on my Kerberos infrastructure. Now the Kerberos tickets contains MS-PAC data and are bigger. It's part of the RFC and is a valid use case : https://datatracker.ietf.org/doc/html/rfc4120#section-5.2.6 Logs : May 30 17:13:00 auth: Debug: auth client connected (pid=378) May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Sent: 220 mail.int.k8s.lemarchand.io Dovecot ready. May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Received new command: EHLO [192.168.202.16] May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: New command May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: Execute command May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: Pipeline blocked May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: 250 reply: Submitted May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: Replied May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: Ready to reply May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Trigger output May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: Next to reply May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Sending replies May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: Next to reply May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: Completed May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: Pipeline unblocked May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Connection state reset May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: 250 reply: Sent: 250-mail.int.k8s.lemarchand.io 8BITMIME AUTH GSSAPI PLAIN LOGIN BURL imap CHUNKING ENHANCEDSTATUSCODES SIZE P IPELINING May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: Finished May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: Destroy May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command EHLO: 250 reply: Destroy May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Trigger output May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: No more commands pending May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Sending replies May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: No more commands pending May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Client sent invalid command: Command line is too long May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command [unknown]: Invalid command May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command [unknown]: 500 reply: Submitted May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command [unknown]: Replied May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command [unknown]: Ready to reply May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Trigger output May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Sending replies May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command [unknown]: Next to reply May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command [unknown]: Completed May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command [unknown]: 500 reply: Sent: 500 5.5.2 Line too long May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command [unknown]: Finished May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command [unknown]: Destroy May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: command [unknown]: 500 reply: Destroy May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Trigger output May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: No more commands pending May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Sending replies May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: No more commands pending May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Remote closed connection: Connection closed May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Disconnected: Connection closed May 30 17:13:00 submission-login: Debug: smtp-server: conn 10.200.114.128:13587 [1]: Connection state reset My guess is that it's due to https://github.com/dovecot/core/blob/main/src/lib-smtp/smtp-common.h#L10 being too low (is it configurable ?), but I didn't read the code thoroughly. Red Hat IDM now activates MS-PAC by default, so any installation based on IDM (or FreeIPA) may have the same problem. What's your opinion ? Bug ? Mail sent using password auth :'( -- Thomas Lemarchand

4 7

Inconsistent listing of shared subfolders
by mschering＠intermesh.nl 30 May '23

30 May '23

Hi all, I have a problem with listing shared folders. In my web application I don't get the whole folder tree at once but get them level by level with: LIST "" "subfolder/%" RETURN (CHILDREN) Now I have an issue with shared folders. If I share folder test/sub with another user it returns it's (not shared) parent folder with this command: LIST "" "shared/someuser/%" RETURN (CHILDREN) But if I do the same with INBOX/sub it will not return the "INBOX" folder with the above command. Is that a bug or does anybody know why it behaves differently? Also, If I do: LIST "" "shared/someuser/*" RETURN (CHILDREN) it will return both the subfolder of test and inbox. My shared namespace is setup like this: namespace { type = shared separator = / prefix = shared/%%u/ # a) Per-user seen flags. Maildir indexes are shared. (INDEXPVT requires v2.2+) location = maildir:%%h/Maildir:INDEXPVT=~/Maildir/shared/%%u # b) Per-user seen flags. Maildir indexes are not shared. If users have direct filesystem level access to their mails, this is a safer option: #location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u:INDEXPVT=~/Maildir/shared/%%u subscriptions = no list = children } Thanks for any help! Best regards, Merijn

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