- dovecot - dovecot.org

"doveadm quota get" performance hit after enablig flat-curve plugin for mail account with 1.3k subfolders
by grabsoon＠gmail.com 28 Nov '25

28 Nov '25

Hello I have some performance problem with doveadm quota get -u user@domain after migrating from 2.3.21 to 2.4.1 and enabling fts-flatcurve plugin for mail account with 1330 folders and subfolders. Quota on 2.3.21 was stored in maildirsize. After upgrading dovecot to 2.4.2 quota driver is set to count When I run doveadm quota get -u user@domain command it takes about 15 minutes. Mail account quota is used about 6.7GB and about 10k messeges. Doveadm process use 100% CPU when it try to count quota values. When I run command doveadm with "strace" to trace callbacks it looks like: 14:51:00.577061 newfstatat(AT_FDCWD, "/maildovecot/*******/Maildir/Foldery przechowywania/Zakupy/drogerie/rossmann/fts-flatcurve/index.714", {st_mode=S_IFDIR|0700, st_size=4096, ...}, 0) = 0 14:51:00.577295 openat(AT_FDCWD, "/maildovecot/*******/Maildir/Foldery przechowywania/Zakupy/drogerie/rossmann/fts-flatcurve/index.714", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 13 14:51:00.577680 rmdir("/maildovecot/*******/Maildir/Foldery przechowywania/Zakupy/drogerie/rossmann/fts-flatcurve/index.714") = -1 ENOTEMPTY (Directory not empty) 14:51:00.577765 rmdir("/maildovecot/*******/Maildir/Foldery przechowywania/Zakupy/drogerie/rossmann/fts-flatcurve/index.714") = -1 ENOTEMPTY (Directory not empty) 14:51:00.577847 rmdir("/maildovecot/*******/Maildir/Foldery przechowywania/Zakupy/drogerie/rossmann/fts-flatcurve/index.714") = -1 ENOTEMPTY (Directory not empty) 14:51:00.577929 rmdir("/maildovecot/*******Maildir/Foldery przechowywania/Zakupy/drogerie/rossmann/fts-flatcurve/index.714") = -1 ENOTEMPTY (Directory not empty) or 14:33:44.529146 newfstatat(AT_FDCWD, "/maildovecot//******//Maildir/Foldery przechowywania/programy lojalnosciowe/vitay/fts-flatcurve/cur", 0x7fff0d9cf270, 0) = -1 ENOENT (No such file or directory) and it loops 2374 times grep fts-flatcurve strace_quota | grep rossmann | wc -l 2374 My configuration: quota "User quota" { driver = count quota_storage_grace = 10M quota_mail_size = 50M quota_message_count = 1500000 quota_warning warn-80-storage { quota_storage_percentage = 80 quota_warning_resource = storage quota_warning_threshold = over execute quota-warning { args = 80 size %{user} %{userdb:quota_storage_size} } } quota_warning warn-90-storage { quota_storage_percentage = 90 quota_warning_resource = storage quota_warning_threshold = over execute quota-warning { args = 90 size %{user} %{userdb:quota_storage_size} } } quota_warning warn-90-message { quota_message_percentage = 95 quota_warning_resource = message quota_warning_threshold = over execute quota-warning { args = 90 inodes } } } service quota-warning { executable = script /dovecot/bin/quota.sh user = mail unix_listener quota-warning { user = mail } } cat conf.d/90-fts.conf language_tokenizers = generic email-address language_tokenizer_generic_algorithm = simple language_filters = lowercase snowball stopwords fts_autoindex = yes fts_autoindex_max_recent_msgs = 100 fts_message_max_size = 20M fts_driver = flatcurve fts_decoder_driver = script fts_decoder_script_socket_path = decode2text service decode2text { executable = script /dovecot/bin/attachment2text.sh unix_listener decode2text { mode = 0666 user = dovecot group = dovecot } } fts_header_excludes { Authentication-Results = yes Received = yes DKIM-* = yes X-* = yes Comments = yes Date = yes Message-ID = yes Received = yes } mailbox TRASH { fts_autoindex = no } mailbox SPAM { fts_autoindex = no } mailbox confirmed-spam { fts_autoindex = no } mailbox confirmed-ham { fts_autoindex = no } language en { default = yes filters = lowercase snowball english-possessive stopwords } fts flatcurve { commit_limit = 500 min_term_size = 2 optimize_limit = 10 rotate_count = 5000 rotate_time = 5s substring_search = no } My questions are: Why "doveadm quota get" tries to open "fts-flatcurve" directories and tries to find "cur" or "ndex.714" directory? Is there any options to exclude all "fts-flatcurve" directories from quota ? Do you observe performance hit for mail accounts with many folders and subfolders after enabling fts-flatcurve?

1 0

Sieve default script configuration
by Bernard 26 Nov '25

26 Nov '25

Hello, Using Dovecot v2.4.1 (Devuan stable), I am facing difficulties debugging what is wrong with my configuration. Here is the error: Error: sieve: file storage: Performing t_readlink() on active sieve symlink '(null)' failed: readlink() failed: Bad address Error: sieve: Failed to access active Sieve script in parsonal storage 'default': Internal error occurred. Refer to server log for more information. [2025-11-13 19:08:48] (temporary failure) This happens on the mailbox which has no personal Sieve file in its personal directory, hence falling back to the default sieve configured that way: sieve_script default { type = default name = default driver = file path = /etc/sieve/ } /etc/sieve contains: drwxr-xr-x 2 root root 4096 Nov 13 18:57 /etc/sieve/ -rw-r--r-- 1 root root 2209 Aug 19 2021 default.sieve -rw-r--r-- 1 root root 2276 Nov 13 18:57 default.svbin I read: - https://doc.dovecot.org/2.4.2/installation/upgrade/2.3-to-2.4.html#converte… converting sieve_default to a sieve_script block with type = default - https://doc.dovecot.org/2.4.2/core/plugins/sieve.html#script-storage-type-d… doveadm sieve list -A returns: vmail default ACTIVE doveadm sieve get -A default returns the sieve file contents /etc/sieve was previously belonging to vmail:vmail. Switching to root:root did not yield any change. Moreover, running sievec on the default.sieve file with vmail:vmail permissions yielded default.svbin with root:root ownership. The error message is cryptic to me: what is this symlink problem? Cheers, Bernard Rosset

3 13

issue getting unseen count from a mailbox
by Louis-David Mitterrand 26 Nov '25

26 Nov '25

Hi, I'm using wmbiff to monitor my imap mailboxes with a script that polls every minute: eval "ssh $WMHOST \"doveadm mailbox status -u ldm 'messages unseen' $(printf %q "$WMBOX")\" 2>/dev/null" |\ awk -F'[ =]' '{old=$3; new=$5} END {print old, new+0}' |\ { read old new; if [ $new -gt 0 ] ;then echo $new new; else echo $old; fi; } If I haven't polled the mailbox before with mutt or another MUA then only the total message count will be returned, however if I peek at the mailbox with a MUA (without looking at any message) then the script returns the new message count. How can I have dovecot (2.4.1 debian) always return the unseen message count in any case? Thanks,

1 0

imap_id_log for 2.4.1
by Adrian M 26 Nov '25

26 Nov '25

Hello, I was using imap_id_log to log user-agent in 2.3, but this seems to be replaced in 2.4 by imap_id_received, however I am unable to find any example how this is supposed to be configured. Please help me clarify this. Hello, I was using imap_id_log to log user-agent in 2.3, but this seems to be replaced in 2.4 by imap_id_received, however I am unable to find any example how this is supposed to be configured. Please help me clarify this.

3 3

Problem migrating some users from old to new dovecot server with doveadm backup
by Javier Miguel Rodríguez 25 Nov '25

25 Nov '25

Hello This is my setup: * Old server: RHEL 7 x64, dovecot 2.3.13 from dovecot RPM repo * New Server: RHEL 9 x64, dovecot-2.3.16-15.el9.x86_64 (rhel rpm) I am migrating several thousand mailboxes with doveadm backup, >99% worked, but 3 of them fail: doveadm(mbejdom)<KlUSFVAuEGnASxcAVKmH5w>: Error: read(myserver) failed: EOF (last sent=mailbox, last recv=mailbox) doveadm(mportcal)<rFRoEw0zEGl+XBcAVKmH5w>: Error: read(myserver) failed: EOF (last sent=mailbox, last recv=mailbox) doveadm(agalmun)<1l2fMZFoEWnoGhgAVKmH5w>: Error: read(myserver) failed: EOF (last sent=mailbox, last recv=mailbox) When I enable debug in doveadm backup this is what I get in one of them: Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: Mailbox ELAICH: Recreated /buzones/indices_correo/18/c4/mportcal/mailboxes/ELAICH/dovecot.index (file_seq=3) because: .log read 20380..8244 > rewrite_min_log_bytes 8192 Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:21:00 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Error: read(myserver) failed: EOF (last sent=mailbox, last recv=mailbox) Nov 13 06:21:00 doveadm(304593): Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:21:00 doveadm(304593): Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:21:00 doveadm(304593): Debug: auth-master: conn unix:/var/run/dovecot//auth-userdb (pid=303177,uid=0): Disconnected: Connection closed (fd=9) In the old server I get this log: Nov 13 06:00:33 myserver dovecot: doveadm: Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0 (backtrace_append+0x42) [0x7f51347cc4c2] -> /usr/lib64/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7f51347cc5ce] -> /usr/lib64/dovecot/libdovecot.so.0(+0xf262e) [0x7f51347d962e] -> /usr/lib64/dovecot/libdovecot.so.0(+0xf26d1) [0x7f51347d96d1] -> /usr/lib64/dovecot/libdovecot.so.0(i_error+0) [0x7f513472bea8] -> /usr/lib64/dovecot/libdovecot.so.0(+0x114376) [0x7f51347fb376] -> /usr/lib64/dovecot/libdovecot.so.0(+0x1143cb) [0x7f51347fb3cb] -> /usr/lib64/dovecot/libdovecot.so.0(buffer_create_dynamic+0x15) [0x7f51347cedc5] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](dsync_mailbox_export_init+0xa40) [0x56263eacc600] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](dsync_brain_sync_mailbox_open+0x47c) [0x56263eac13ac] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](dsync_brain_slave_recv_mailbox+0x285) [0x56263eac23e5] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](dsync_brain_run+0x292) [0x56263eabf932] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x46f61) [0x56263eabff61] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x5bb9f) [0x56263ead4b9f] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x65) [0x7f51347f1775] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x12b) [0x7f51347f310b] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x59) [0x7f51347f1879] -> /usr/lib64/dovecot/libdovecot.so.0 (io_loop_run+0x38) [0x7f51347f1ab8] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x29ceb) [0x56263eaa2ceb] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x2b8c7) [0x56263eaa48c7] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x42bc4) [0x56263eabbbc4] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x65) [0x7f51347f1775] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x12b) [0x7f51347f310b] -> /usr/lib64/dovecot/libdovecot.so.0 (io_loop_handler_run+0x59) [0x7f51347f1879] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f51347f1ab8] -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f513475d493] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](main+0x1fc) [0x56263ea94a3c] -> /lib64/libc.so.6(__libc_start_main+0xf5) [0x7f5134039555] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x1bb02) [0x56263ea94b02] I have tried doveadm force-resync but still get the same error. What can I do to troubleshoot what is happening? I attach doveconf -n output of the old server: auth_cache_negative_ttl = 10 secs auth_cache_size = 10 M auth_cache_ttl = 2 mins auth_master_user_separator = * auth_worker_max_count = 5500 base_dir = /var/run/dovecot/ default_client_limit = 5000 default_process_limit = 6500 disable_plaintext_auth = no doveadm_password = # hidden, use -P to show it imap_capability = +XLIST imap_client_workarounds = tb-extra-mailbox-sep delay-newmail tb-lsub-flags imap_id_log = * imap_max_line_length = 92 k lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_attribute_dict = file:/indices_correo/%2.26Hn/%2.200Hn/%n/dovecot-attributes mail_fsync = never mail_gid = entrega mail_home = /buzones_primarios/%2.26Hn/%2.200Hn/%n/home_usuario mail_location = mdbox:/buzones_primarios/%2.26Hn/%2.200Hn/%n:ALT=/buzones_secundarios/%2.26Hn/%2.200Hn/%n:INDEX=/indices_correo/%2.26Hn/%2.200Hn/%n:ITERINDEX mail_log_prefix = "%s(%u)<%{session}>: " mail_max_userip_connections = 2500 mail_plugins = " zlib acl quota virtual" mail_uid = entrega 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 mdbox_rotate_interval = 1 days mdbox_rotate_size = 60 M namespace { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox SPAM { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = /etc/dovecot/deny deny = yes driver = passwd-file } passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } passdb { args = /etc/usuario_maestro.txt driver = passwd-file master = yes } passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } plugin { acl = vfile lda_mailbox_autosubscribe = yes quota = dict:Cuota de usuario::file:/indices_correo/cuotas/%n quota_rule2 = Trash:storage=+10%% quota_warning = storage=90%% aviso_cuota 90 %u sieve = /buzones_primarios/%2.26Hn/%2.200Hn/%n/home_usuario/dovecot.sieve sieve_dir = /buzones_primarios/%2.26Hn/%2.200Hn/%n/home_usuario/sieve/ sieve_max_redirects = 20 zlib_save = gz zlib_save_level = 1 } pop3_no_flag_updates = yes protocols = pop3 imap sieve service anvil { client_limit = 25000 } service auth { client_limit = 32000 unix_listener auth-master { user = entrega } unix_listener auth-userdb { user = entrega } user = root } service aviso_cuota { executable = script /usr/local/bin/quota-warning.sh unix_listener aviso_cuota { mode = 0666 } user = entrega } service config { process_min_avail = 4 } service doveadm { inet_listener { port = 12354 } } service imap-login { executable = /usr/libexec/dovecot/imap-login group = dovenull process_min_avail = 2 service_count = 0 vsz_limit = 1 G } service imap { executable = /usr/libexec/dovecot/imap process_limit = 8000 process_min_avail = 12 vsz_limit = 1 G } service managesieve-login { executable = /usr/libexec/dovecot/managesieve-login inet_listener sieve { port = 2000 } process_limit = 2000 vsz_limit = 1 G } service managesieve { executable = /usr/libexec/dovecot/managesieve process_limit = 5000 } service pop3-login { executable = /usr/libexec/dovecot/pop3-login process_limit = 5000 process_min_avail = 2 service_count = 0 vsz_limit = 1 G } service pop3 { executable = /usr/libexec/dovecot/pop3 process_limit = 5000 } service stats { fifo_listener stats-mail { mode = 0600 user = entrega } } ssl_cert = </etc/pki/tls/certificado.pem ssl_cipher_list = ECDHE-RSA-AES128-SHA256:AES128-GCM-SHA256:RC4:HIGH:!MD5:!aNULL:!EDH ssl_min_protocol = TLSv1.2 userdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } userdb { args = /etc/dovecot/dovecot-ldap-userdb.conf driver = ldap } verbose_proctitle = yes protocol sieve { managesieve_implementation_string = dovecot managesieve_logout_format = bytes=%i/%o managesieve_max_line_length = 64 k } protocol lda { hostname = mydomain.tldr info_log_path = log_path = mail_fsync = optimized mail_plugins = sieve zlib quota virtual postmaster_address = me(a)mydomain.tldr syslog_facility = mail } protocol imap { imap_metadata = yes mail_plugins = zlib quota imap_quota virtual } protocol pop3 { mail_plugins = zlib quota virtual pop3_enable_last = yes pop3_uidl_format = %g } Regards Javier Hello This is my setup: o Old server: RHEL 7 x64, dovecot 2.3.13 from dovecot RPM repo o New Server: RHEL 9 x64, dovecot-2.3.16-15.el9.x86_64 (rhel rpm) I am migrating several thousand mailboxes with doveadm backup, >99% worked, but 3 of them fail: doveadm(mbejdom)<KlUSFVAuEGnASxcAVKmH5w>: Error: read(myserver) failed: EOF (last sent=mailbox, last recv=mailbox) doveadm(mportcal)<rFRoEw0zEGl+XBcAVKmH5w>: Error: read(myserver) failed: EOF (last sent=mailbox, last recv=mailbox) doveadm(agalmun)<1l2fMZFoEWnoGhgAVKmH5w>: Error: read(myserver) failed: EOF (last sent=mailbox, last recv=mailbox) When I enable debug in doveadm backup this is what I get in one of them: Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: Mailbox ELAICH: Recreated /buzones/indices_correo/18/c4/mportcal/mailboxes/ELAICH/dovecot.index (file_seq=3) because: .log read 20380..8244 > rewrite_min_log_bytes 8192 Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:20:59 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:21:00 doveadm(mportcal)<mIcAIbtqFWnRpQQAVKmH5w>: Error: read(myserver) failed: EOF (last sent=mailbox, last recv=mailbox) Nov 13 06:21:00 doveadm(304593): Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:21:00 doveadm(304593): Debug: dict(file)<mportcal>: Waiting for dict to finish pending operations Nov 13 06:21:00 doveadm(304593): Debug: auth-master: conn unix:/var/run/dovecot//auth-userdb (pid=303177,uid=0): Disconnected: Connection closed (fd=9) In the old server I get this log: Nov 13 06:00:33 myserver dovecot: doveadm: Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0 (backtrace_append+0x42) [0x7f51347cc4c2] -> /usr/lib64/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7f51347cc5ce] -> /usr/lib64/dovecot/libdovecot.so.0(+0xf262e) [0x7f51347d962e] -> /usr/lib64/dovecot/libdovecot.so.0(+0xf26d1) [0x7f51347d96d1] -> /usr/lib64/dovecot/libdovecot.so.0(i_error+0) [0x7f513472bea8] -> /usr/lib64/dovecot/libdovecot.so.0(+0x114376) [0x7f51347fb376] -> /usr/lib64/dovecot/libdovecot.so.0(+0x1143cb) [0x7f51347fb3cb] -> /usr/lib64/dovecot/libdovecot.so.0(buffer_create_dynamic+0x15) [0x7f51347cedc5] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](dsync_mailbox_export_init+0xa40) [0x56263eacc600] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](dsync_brain_sync_mailbox_open+0x47c) [0x56263eac13ac] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](dsync_brain_slave_recv_mailbox+0x285) [0x56263eac23e5] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](dsync_brain_run+0x292) [0x56263eabf932] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x46f61) [0x56263eabff61] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x5bb9f) [0x56263ead4b9f] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x65) [0x7f51347f1775] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x12b) [0x7f51347f310b] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x59) [0x7f51347f1879] -> /usr/lib64/dovecot/libdovecot.so.0 (io_loop_run+0x38) [0x7f51347f1ab8] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x29ceb) [0x56263eaa2ceb] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x2b8c7) [0x56263eaa48c7] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x42bc4) [0x56263eabbbc4] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x65) [0x7f51347f1775] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x12b) [0x7f51347f310b] -> /usr/lib64/dovecot/libdovecot.so.0 (io_loop_handler_run+0x59) [0x7f51347f1879] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f51347f1ab8] -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f513475d493] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](main+0x1fc) [0x56263ea94a3c] -> /lib64/libc.so.6(__libc_start_main+0xf5) [0x7f5134039555] -> dovecot/doveadm-server [192.168.10.62 mportcal slave_recv_mailbox](+0x1bb02) [0x56263ea94b02] I have tried doveadm force-resync but still get the same error. What can I do to troubleshoot what is happening? I attach doveconf -n output of the old server: auth_cache_negative_ttl = 10 secs auth_cache_size = 10 M auth_cache_ttl = 2 mins auth_master_user_separator = * auth_worker_max_count = 5500 base_dir = /var/run/dovecot/ default_client_limit = 5000 default_process_limit = 6500 disable_plaintext_auth = no doveadm_password = # hidden, use -P to show it imap_capability = +XLIST imap_client_workarounds = tb-extra-mailbox-sep delay-newmail tb-lsub-flags imap_id_log = * imap_max_line_length = 92 k lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_attribute_dict = [1]file:/indices_correo/%2.26Hn/%2.200Hn/%n/dovecot-attributes mail_fsync = never mail_gid = entrega mail_home = /buzones_primarios/%2.26Hn/%2.200Hn/%n/home_usuario mail_location = mdbox:/buzones_primarios/%2.26Hn/%2.200Hn/%n:ALT=/buzones_secundarios/%2.26Hn/%2.200Hn/%n:INDEX=/indices_correo/%2.26Hn/%2.200Hn/%n:ITERINDEX mail_log_prefix = "%s(%u)<%{session}>: " mail_max_userip_connections = 2500 mail_plugins = " zlib acl quota virtual" mail_uid = entrega 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 mdbox_rotate_interval = 1 days mdbox_rotate_size = 60 M namespace { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox SPAM { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = /etc/dovecot/deny deny = yes driver = passwd-file } passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } passdb { args = /etc/usuario_maestro.txt driver = passwd-file master = yes } passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } plugin { acl = vfile lda_mailbox_autosubscribe = yes quota = dict:Cuota de usuario::[2]file:/indices_correo/cuotas/%n quota_rule2 = Trash:storage=+10%% quota_warning = storage=90%% aviso_cuota 90 %u sieve = /buzones_primarios/%2.26Hn/%2.200Hn/%n/home_usuario/dovecot.sieve sieve_dir = /buzones_primarios/%2.26Hn/%2.200Hn/%n/home_usuario/sieve/ sieve_max_redirects = 20 zlib_save = gz zlib_save_level = 1 } pop3_no_flag_updates = yes protocols = pop3 imap sieve service anvil { client_limit = 25000 } service auth { client_limit = 32000 unix_listener auth-master { user = entrega } unix_listener auth-userdb { user = entrega } user = root } service aviso_cuota { executable = script /usr/local/bin/quota-warning.sh unix_listener aviso_cuota { mode = 0666 } user = entrega } service config { process_min_avail = 4 } service doveadm { inet_listener { port = 12354 } } service imap-login { executable = /usr/libexec/dovecot/imap-login group = dovenull process_min_avail = 2 service_count = 0 vsz_limit = 1 G } service imap { executable = /usr/libexec/dovecot/imap process_limit = 8000 process_min_avail = 12 vsz_limit = 1 G } service managesieve-login { executable = /usr/libexec/dovecot/managesieve-login inet_listener sieve { port = 2000 } process_limit = 2000 vsz_limit = 1 G } service managesieve { executable = /usr/libexec/dovecot/managesieve process_limit = 5000 } service pop3-login { executable = /usr/libexec/dovecot/pop3-login process_limit = 5000 process_min_avail = 2 service_count = 0 vsz_limit = 1 G } service pop3 { executable = /usr/libexec/dovecot/pop3 process_limit = 5000 } service stats { fifo_listener stats-mail { mode = 0600 user = entrega } } ssl_cert = </etc/pki/tls/certificado.pem ssl_cipher_list = ECDHE-RSA-AES128-SHA256:AES128-GCM-SHA256:RC4:HIGH:!MD5:!aNULL:!EDH ssl_min_protocol = TLSv1.2 userdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } userdb { args = /etc/dovecot/dovecot-ldap-userdb.conf driver = ldap } verbose_proctitle = yes protocol sieve { managesieve_implementation_string = dovecot managesieve_logout_format = bytes=%i/%o managesieve_max_line_length = 64 k } protocol lda { hostname = mydomain.tldr info_log_path = log_path = mail_fsync = optimized mail_plugins = sieve zlib quota virtual postmaster_address = [3]me(a)mydomain.tldr syslog_facility = mail } protocol imap { imap_metadata = yes mail_plugins = zlib quota imap_quota virtual } protocol pop3 { mail_plugins = zlib quota virtual pop3_enable_last = yes pop3_uidl_format = %g } Regards Javier References Visible links 1. file://indices_correo/%2.26Hn/%2.200Hn/%n/dovecot-attributes 2. file://indices_correo/cuotas/%n 3. mailto:me@mydomain.tldr

2 2

dovecot Build on macOS Fails With "No rule to make target `-L/opt/local/lib', needed by `test-regex'"
by Steven Smith 25 Nov '25

25 Nov '25

I’m trying to update the MacPorts dovecot to version 2.4.2. The build uses the standard calls './configure ; make all’, with standard build flags LDFLAGS='-L/opt/local/lib …' I get this build error, which makes it appear that the Makefile in ./src/lib-regex is creating a incorrect target from the build flags. > :info:build Making all in lib-regex > :info:build make[3]: Entering directory `/opt/local/var/macports/build/dovecot-f6decbdd/work/dovecot-2.4.2/src/lib-regex' > :info:build make[3]: *** No rule to make target `-L/opt/local/lib', needed by `test-regex'. Stop. The cause of this is that the Makefile ./src/lib-regex/Makefile incorrectly includes the library path option -L/opt/local/lib as a library dependency: > LIBICU_LIBS = -L/opt/local/lib -licui18n -licuuc > LIBOBJS = > LIBPCRE_CFLAGS = > LIBPCRE_LIBS = -L/opt/local/lib -lpcre2-32 > LIBS = > LIBSODIUM_CFLAGS = > LIBSODIUM_LIBS = -L/opt/local/lib -lsodium I'm trying to update the MacPorts dovecot to version 2.4.2. The build uses the standard calls './configure ; make all', with standard build flags LDFLAGS='-L/opt/local/lib ...' I get this build error, which makes it appear that the Makefile in ./src/lib-regex is creating a incorrect target from the build flags. :info:build Making all in lib-regex :info:build make[3]: Entering directory `/opt/local/var/macports/build/dovecot-f6decbdd/work/dovecot-2.4.2/src/lib-regex' :info:build make[3]: *** No rule to make target `-L/opt/local/lib', needed by `test-regex'. Stop. The cause of this is that the Makefile ./src/lib-regex/Makefile incorrectly includes the library path option -L/opt/local/lib as a library dependency: LIBICU_LIBS = -L/opt/local/lib -licui18n -licuuc LIBOBJS = LIBPCRE_CFLAGS = LIBPCRE_LIBS = -L/opt/local/lib -lpcre2-32 LIBS = LIBSODIUM_CFLAGS = LIBSODIUM_LIBS = -L/opt/local/lib -lsodium

1 0

Fresh mailbox missing directories tmp/new/cur
by Andreas Pflug 24 Nov '25

24 Nov '25

My configuration is this: mail_driver = maildir mail_path=/mailboxes/%{user} mailbox_list_layout=fs mailbox_directory_name=mbxInternal After connecting to Dovecot with Thunderbird for the first time, the following directory structure is created: ./dovecot.index.log ./Trash ./Trash/mbxInternal ./Trash/mbxInternal/dovecot.index.cache ./Trash/mbxInternal/cur ./Trash/mbxInternal/dovecot-uidlist ./Trash/mbxInternal/new ./Trash/mbxInternal/tmp ./Trash/mbxInternal/dovecot.index.log ./Trash/mbxInternal/dovecot-keywords ./dovecot.mailbox.log ./dovecot-uidvalidity ./subscriptions ./dovecot-uidvalidity.69245ab1 ./dovecot.list.index.log ./dovecot-uidlist Trying to copy a mail (using thunderbird) to the Trash will succeed, but trying to copy to INBOX gives the error Error: Mailbox INBOX: open(/mailboxes/me/tmp/1763990412.M635852P115610.mailstore) failed: No such file or directory which isn't surprising, the tmp/cur/new directories aren't there. After creating a subfolder, I have ./tmp ./dovecot.mailbox.log ./dovecot-uidvalidity ./INBOX ./INBOX/subfolder ./INBOX/subfolder/mbxInternal ./INBOX/subfolder/mbxInternal/new ./INBOX/subfolder/mbxInternal/cur ./INBOX/subfolder/mbxInternal/dovecot-uidlist ./INBOX/subfolder/mbxInternal/dovecot.index.log ./INBOX/subfolder/mbxInternal/tmp ./cur ./subscriptions ./dovecot.list.index.log ./Junk ./Junk/mbxInternal ./Junk/mbxInternal/cur ./Junk/mbxInternal/ ./new all directories are there as expected, and copying to INBOX works as well. Tested with Dovecot 2.4.1 (Debian13) and Thunderbird 140.5 NB: with mailbox_directory_name and mailbox_list_layout unset, cur/new/tmp directories are created immediately. Regards Andreas

1 0

multiple passdbs on 2.4.1
by Lou Duchez 23 Nov '25

23 Nov '25

I recently upgraded from 2.3 to 2.4.1, a little unwillingly (thanks Fedora), and I've almost got 2.4.1 working on my failover mail server. The failover server's job is, if the main mail server is inaccessible, mail gets delivered to the failover instead. Then the main server will retrieve mail from the failover server when it can. This has worked very well for many years. The way I implemented it was, I had two passdb's on the failover server: one for ordinary users who might need to access the failover server directly (login and password required), and one so that the main mail server could grab mail from the failover server (no password required). This broke when I went to 2.4.1; now, no matter what I do, Dovecot honors only one of the passdbs. Here is the configuration as it stands now. The intention is that, if the user properly authenticates with the first passdb, they're authenticated and the second passdb isn't consulted. But if the user doesn't authenticate with the first passdb, Dovecot moves on to the second passdb. # the passdb for normal users to check their mail on the failover server passdb passwd-file { passwd_file_path = /vmail/Maildir/passwdfile passdb_result_success = return-ok passdb_result_failure = continue-fail } # the passdb for the main server to grab mail from the failover server passdb passwd-file { passwd_file_path = /vmail/Maildir/passwdfile passdb_skip = authenticated fields { nopassword = yes allow_nets = xxx.xxx.xxx.xxx/32 } passdb_result_success = return-ok passdb_result_failure = return-fail } As things stand now, Dovecot always moves on to the second passdb and authenticates the user, or not, according to the outcome of the second passdb. The outcome of the first passdb does not seem to matter. Curiously, if I comment out the second passdb, the first passdb authenticates users as expected. I've tried all kinds of gyrations with passdb_result_success and passdb_result_failure, and none of them seem to work. The options I have there right now are, to the best of my knowledge, the ones that best match the flow I want to be seeing. There's a chance there's a bug in 2.4.1, but I bet I'm doing something wrong. What am I doing wrong?

3 7

Migrate deliver conf from 2.3 to 2.4 help and get panic
by Barry Scott 21 Nov '25

21 Nov '25

I'm trying to migrate my dovecot config from Fedora 42's dovecot-2.3.21.1-5.fc42.x86_64 to Fedora 43's dovecot-2.4.1-6.fc43.x86_64. I use this command to run the LDA via deliver.sh: ---- #!/bin/sh exec /usr/libexec/dovecot/deliver -c $HOME/fetchmail/barry(a)barrys-emacs.org/dovecot-deliver-rc -e "$@" ---- It's called from a procmail script like this: ---- LDA="$HOME/fetchmail/$MAILACCOUNT/deliver.sh" :0 * ^List-Id:.*<dovecot.dovecot.org> | $LDA -m "Others.Dovecot" ---- The dovecot-deliver-rc that I use for 2.3 is ---- log_path = /home/barry-mail/fetchmail/barry(a)barrys-emacs.org/logs/deliver.log protocol lda { postmaster_address = barry(a)barrys-emacs.org mail_location = maildir:~/Maildir lda_mailbox_autocreate = yes } ---- But for 2.4 that config is invalid. For 2.4 I iterated to this: ---- dovecot_config_version = 2.4.0 dovecot_storage_version = 2.4.0 protocol lda { postmaster_address = barry(a)barrys-emacs.org lda_mailbox_autocreate = yes log_path = /home/barry-mail/fetchmail/barry(a)barrys-emacs.org/logs/deliver.log mail_driver = maildir mail_home = /home/barry-mail mail_path = /home/barry-mail/Maildir } ---- But that crashed /usr/libexec/dovecot/deliver ---- Panic: file mailbox-list.c: line 1163: unreached Error: Raw backtrace: libdovecot.so.0(backtrace_append+0x40) [0x7efe1a0f8320] libdovecot.so.0(backtrace_get+0x2f) [0x7efe1a0f846f] libdovecot.so.0(+0x101322) [0x7efe1a101322] libdovecot.so.0(+0x101365) [0x7efe1a101365] libdovecot.so.0(+0x2ad0f) [0x7efe1a02ad0f] libdovecot.so.0(+0x2b062) [0x7efe1a02b062] libdovecot-storage.so.0(+0x13dd5) [0x7efe1a28cdd5] libdovecot-storage.so.0(+0x6bfcc) [0x7efe1a2e4fcc] libdovecot-storage.so.0(mail_storage_create+0x504) [0x7efe1a2b56b4] libdovecot-storage.so.0(raw_storage_create_from_set+0x1ab) [0x7efe1a31672b] deliver(main+0x800) [0x557e6bbab6a0] libc.so.6(+0x35b5) [0x7efe19e0f5b5] libc.so.6(__libc_start_main+0x88) [0x7efe19e0f668] deliver(_start+0x25) [0x557e6bbac0e5] ---- Is the config for 2.4 in principle correct? Where do I report the crash? Barry

2 1

control and index
by Marek Greško 21 Nov '25

21 Nov '25

Hello, I just upgraded my server from Fedora 42 to Fedora 43 and found out there is an upgrade to dovecot 2.4 which requires completely new config. I am in doubt how I should convert it. My main issue is now hot co convert this line: mail_location = maildir:/var/maildir/%u:INDEX=/var/dovecot-index/%u:CONTROL=/var/dovecot-control/%u I am uncertain whether the first part should look like: mail_home = /var/maildir/ mail_driver = maildir mail_path = /var/maildir/%{user} But I am completely lost how to convert INDEX and CONTROL section. Could someone help me in this matter? Thanks Marek Hello, I just upgraded my server from Fedora 42 to Fedora 43 and found out there is an upgrade to dovecot 2.4 which requires completely new config. I am in doubt how I should convert it. My main issue is now hot co convert this line: mail_location = maildir:/var/maildir/%u:INDEX=/var/dovecot-index/%u:CONTROL=/var/dovecot-control/%u I am uncertain whether the first part should look like: mail_home = /var/maildir/ mail_driver = maildir mail_path = /var/maildir/%{user} But I am completely lost how to convert INDEX and CONTROL section. Could someone help me in this matter? Thanks Marek

3 3