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Question about quota calculation
by Zakaria 16 Apr '25

16 Apr '25

Hi everyone, I wondered if anyone know the reason why dovecot quota command:- doveadm quota get -u email_address returns slightly smaller size than status command vsize:- doveadm mailbox status -t all "*" -u email_address I wondered if its a bug but this would be noticeable imparity between the two results? given in my case dovecot leaves out around 67 MB in my case through quota command and why is this? Which one would I should use to determine if user exceeded quota limit for certainty? Any recommendation? With thanks. Zak. Hi everyone, I wondered if anyone know the reason why dovecot quota command:- doveadm quota get -u email_address returns slightly smaller size than status command vsize:- doveadm mailbox status -t all "*" -u email_address I wondered if its a bug but this would be noticeable imparity between the two results? given in my case dovecot leaves out around 67 MB in my case through quota command and why is this? Which one would I should use to determine if user exceeded quota limit for certainty? Any recommendation? With thanks. Zak.

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Dovecot24 - passdb configuration syntax
by Juergen Edner 16 Apr '25

16 Apr '25

Hello, as Dovecot 2.4.1 has been published, I started investigation how I need to modify my existing Dovecot 2.3.x configuration, which worked flawlessly the last 5 years. With the help of the doveconf tool I've identified the parameters which need to be modified and I got rid of the error message at the end. Nevertheless, not getting any errors displayed, does not automatically mean, that it has correctly been configured. Here is the initial auth configuration and hopefully the right 2.4 version: Dovecot23: disable_plaintext_auth = yes auth_username_format = %Lu auth_mechanisms = plain login cram-md5 passdb { driver = passwd-file args = username_format=%Lu /path/to/aliases-file } passdb { driver = passwd-file args = scheme=cram-md5 /path/to/cram-md5-file } userdb { driver = passwd } Dovecot24: auth_allow_cleartext = no auth_username_format = %{user | lower} auth_mechanisms = plain login cram-md5 passdb aliases-file { passwd_file_path = /path/to/aliases-file } passdb md5-file { passwd_file_path = /path/to/cram-md5-file } userdb passwd-file { passwd_file_path = /etc/passwd } Here are my questions: - The first passdb configuration (aliases file) initially contained the "args = username_format=%Lu ..." option. Do I still need to convert this to a dedicated "auth_username_format = %{user | lower}" line or is this already covered by the global "auth_username_format" setting? - The second passdb configuration (cram-md5 file) initially contained the "args = scheme=cram-md5 ..." option. I couldn't find any replacement for it. Does this mean the only alternative would be to prefix all passwords in the password file with "{CRAM-MD5}"? - For the third userdb configuration (passwd file) I made use of the "passwd_file_path" parameter. Is this a valid replacement for the original "driver = passwd" entry or have I forgotten anything? BTW, I was curious if ChatGPT could do the job faster than me, but I can say "not yet". It made several errors and had to be corrected one by one but that might change in the future if more and more people are asking for support on this topic. Thanks Juergen -- Mail: juergen(a)eisfair.org

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Stats-writer permission denied
by Ken Wright 15 Apr '25

15 Apr '25

I've got a new Dovecot error (well, new to me, at least)! I ran tail /var/log/mail.err and got the following: net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission denied I checked the file, and it's owned by www-data and the www-data group, with read and write permissions for owner and group... just like I have specified in /etc/dovecot/conf.d/10-master.conf. I can't understand why permission is denied when the file permissions appear to be correct. Can anyone shed any light on this for me? Ubuntu 20.04 Dovecot 2.3.7.2 Ken

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shared folders in dovecot
by Anton Shevtsov 15 Apr '25

15 Apr '25

I used dovecot without shared folders some time ago. All work fine. old dovecot config: |mail_home=/var/mail/%d/%n mail_location = maildir:/var/mail/%d/%n:UTF-8:INBOX=/var/mail/%d/%n/Inbox |mail_plugins = acl |protocol imap { mail_plugins = $mail_plugins } | All work fine. Now I want to add shared folder functionality. I am defining namespaces and doing it wrong (maybe) new dovecot config: |mail_home=/var/mail/%d/%n mail_location = maildir:/var/mail/%d/%n:UTF-8:INBOX=/var/mail/%d/%n/Inbox |mail_plugins = acl |mail_debug=yes namespace inbox { type = private separator = / prefix = inbox = yes } namespace { type = shared separator = / prefix = shared/%%u/ # wrong #location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u:INDEXPVT=~/Maildir/shared/%%u |# wrong again location = maildir:%%h/:INDEX=~/%%u |subscriptions = no list = children } protocol imap { mail_plugins = $mail_plugins imap_acl acl } plugin { acl = vfile acl_shared_dict = file:/var/mail/%d/shared-mailboxes.db } | I can set access right for shared folder (screenshot - https://ibb.co/ccxQ63wN) but i can not see shared folder in subscriptions (screenshot - https://ibb.co/PRfpD7X) -- *Anton* I used dovecot without shared folders some time ago. All work fine. old dovecot config: mail_home=/var/mail/%d/%n mail_location = maildir:/var/mail/%d/%n:UTF-8:INBOX=/var/mail/%d/%n/Inbox mail_plugins = acl protocol imap { mail_plugins = $mail_plugins } All work fine. Now I want to add shared folder functionality. I am defining namespaces and doing it wrong (maybe) new dovecot config: mail_home=/var/mail/%d/%n mail_location = maildir:/var/mail/%d/%n:UTF-8:INBOX=/var/mail/%d/%n/Inbox mail_plugins = acl mail_debug=yes namespace inbox { type = private separator = / prefix = inbox = yes } namespace { type = shared separator = / prefix = shared/%%u/ # wrong #location = maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u:INDEXPVT=~/ Maildir/shared/%%u # wrong again location = maildir:%%h/:INDEX=~/%%u subscriptions = no list = children } protocol imap { mail_plugins = $mail_plugins imap_acl acl } plugin { acl = vfile acl_shared_dict = file:/var/mail/%d/shared-mailboxes.db } I can set access right for shared folder (screenshot - https://ibb.co/ccxQ63wN) but i can not see shared folder in subscriptions (screenshot - https://ibb.co/ PRfpD7X) -- Anton

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Reindex all e-mails for FTS?
by Alexander Skwar 14 Apr '25

14 Apr '25

Hello How do I reindex all e-mails (for a user or for all users) for FTS? Seems I can find new emails, but not old ones. I tried this: askwar@mail /o/mailcow-dockerized> time sudo docker compose exec dovecot-mailcow doveadm index -A '*' ________________________________________________________ Executed in 1.73 secs fish external usr time 0.00 millis 0.00 millis 0.00 millis sys time 12.90 millis 1.08 millis 11.83 millis As you can see, this was very fast — should it be…? I'd like to be able to search for a text which is in attachments and then I'd need to be able to find the email. This works fine for new emails, but not for old ones. To verify that the attachment would be readable by tika, I took an old e-mail, saved the PDF attachment, and then mailed it to me. Searching for the e-mail will find the new e-mail, but not the old one. The mailbox is not exactly small: askwar@mail /o/mailcow-dockerized> sudo docker compose exec dovecot-mailcow doveadm quota get -u a(a)skwar.xyz Quota name Type Value Limit % Userquota STORAGE 34908222 61685760 56 Userquota MESSAGE 458837 - 0 bd36093fccaa:/# du -sh /var/vmail_index/a\(a)skwar.xyz/ /var/vmail/skwar.xyz/a 2.4G /var/vmail_index/a(a)skwar.xyz/ 27G /var/vmail/skwar.xyz/a I've enabled full text search fts in dovecot with these settings: plugin { fts_autoindex = yes fts_autoindex_exclude = \Junk fts_autoindex_exclude2 = \Trash fts = flatcurve fts_tika = http://tika:9998/tika fts_tokenizer_email_address = maxlen=100 fts_tokenizer_generic = algorithm=simple maxlen=30 fts_languages = en es de fts_tokenizers = generic email-address fts_filters = normalizer-icu snowball stopwords fts_filters_en = lowercase snowball english-possessive stopwords fts_index_timeout = 300s } askwar@mail /o/mailcow-dockerized> docker --version Docker version 27.3.1, build ce12230 askwar@mail /o/mailcow-dockerized> sudo docker compose exec dovecot-mailcow dovecot --version 2.3.21.1 (d492236fa0) Thanks, Alexander

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Compile failure on git head : lib-settings/settings-history-core.h
by Genes Lists 14 Apr '25

14 Apr '25

Summary: -------- Our daily test builds of git head started failing on Archlinux using gcc 14.2.1+r753+g1cd744a6828f-1 Compile error occurs on git HEAD branch main: commit : beca41cc94dbc81cb2586aab311762bde39bdb11 Possible relevant commit: ------------------------ commit 9dca2f961f83a071d2ff516cd332cd4aa88484dd Build Error: ------------ ... CCLD test-dns-util make[3]: Leaving directory '.. /src/core/src/lib-dns' Making all in lib-settings make[3]: Entering directory '.. /src/lib-settings' GEN settings-history-core.h Line 3: Invalid version sort order make[3]: *** [Makefile:897: settings-history-core.h] Error 1 Thanks for any help. gene (more detail below) config / build details: ---------------------- git fetch --all; git pull git clean -fdx ./autogen.sh ./configure \ --enable-maintainer-mode \ --prefix=/usr \ --sbindir=/usr/bin \ --sysconfdir=/etc \ --localstatedir=/var \ --libexecdir=/usr/lib \ --with-rundir=/run/dovecot \ --with-moduledir=/usr/lib/dovecot/modules \ --disable-static \ --with-pam \ --with-sqlite \ --with-pgsql \ --with-mysql \ --with-ssldir=/etc/ssl \ --with-gssapi \ --with-ldap=yes \ --with-lua=plugin \ --with-bzlib \ --with-lz4 \ --with-zstd \ --with-solr \ --with-sodium \ --with-libcap \ --enable-experimental-mail-utf8 \ --enable-experimental-imap4rev2 Install prefix . : /usr File offsets ... : 64bit I/O polling .... : epoll I/O notifys .... : inotify SSL ............ : openssl GSSAPI ......... : yes passdbs ........ : static lua (plugin) passwd passwd-file pam ldap sql : -bsdauth userdbs ........ : static lua (plugin) prefetch passwd passwd-file ldap sql CFLAGS ......... : -std=gnu11 -g -O2 -fstack-protector-strong - U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -mfunction-return=keep -mindirect- branch=keep -Wall -W -Wmissing-prototypes -Wmissing-declarations - Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno- builtin-strftime -Wstrict-aliasing=2 SYSTEMD ........ : notify - /usr/lib/systemd/system/dovecot.service SQL drivers .... : pgsql mysql sqlite : -cassandra Full text search : solr make clean make -- Gene

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email-address Tokenizer Splits Hyphenated Local-Parts, Causing Inaccurate FTS Search Results
by Daniel 11 Apr '25

11 Apr '25

I’m using Dovecot FTS with the flatcurve backend in a mailcow: dockerized setup. When searching for an email address with a hyphenated local-part (e.g., ma-g(a)example.com) the email-address tokenizer splits the local-part on hyphens, producing tokens like ma, g, and ma-g(a)example.com. This prevents searching for ma-g as a single term. With fts_flatcurve_substring_search = yes, searching for ma-g matches unrelated addresses containing ma (e.g., manager(a)example.com) leading to irrelevant results. Dovecot version: 2.3.21.1 (d492236fa0) Including only relevant part of dovecot config: plugin { fts = flatcurve fts_autoindex = yes fts_autoindex_exclude = \Junk fts_autoindex_exclude2 = \Trash fts_autoindex_max_recent_msgs = 999999 fts_tokenizers = generic email-address fts_tokenizer_email_address = maxlen=100 fts_tokenizer_generic = algorithm=simple maxlen=100 fts_flatcurve_substring_search = yes fts_languages = en es de ru fts_filters = normalizer-icu snowball stopwords fts_filters_en = lowercase snowball english-possessive stopwords fts_filters_ru = lowercase snowball stopwords fts_index_timeout = 300s } service indexer-worker { process_limit = 12 vsz_limit = 512 MB } Steps to Reproduce: Index an email with ma-g(a)example.com in the From field also index email contains "ma" and "g" in the From field. Check tokenization: doveadm fts tokenize -u user(a)example.com "ma-g(a)example.com" Output: ma g example com ma-g(a)example.com Search: doveadm search -u user(a)example.com FROM ma-g Results include manager(a)example.com due to ma matching. Expected Behavior: FROM ma-g should match only emails with ma-g(a)example.com, treating ma-g as a single term or exact local-part. Expected tokens: doveadm fts tokenize -u user(a)example.com "ma-g(a)example.com" Output: ma-g ma g example com ma-g(a)example.com Actual Behavior: The tokenizer splits ma-g into ma and g. Substring search matches "ma" or "g" in unrelated addresses (e.g., manager(a)example.com, greg(a)example.com) Without substring search, ma-g matches nothing unless searching the full address. Impact: Searching hyphenated local-parts for short email address local-parts is unreliable, especially for common fragments like ma, flooding results with irrelevant matches. Request: Add a configuration option, such as "fts_tokenizer_email_address_keep_hyphenated = yes|no" (default: no, for compatibility), to include the hyphenated local-part of an email address as an additional token. For example, with "yes", tokenizing "ma-g(a)example.com" would produce "ma-g", "ma", "g", "example", "com", and "ma-g(a)example.com". This allows searches for "FROM ma-g" to match emails with "ma-g(a)example.com" exactly, while preserving "ma" and "g" for substring searches. Consider "yes" as a future default, as including hyphenated local-parts aligns with RFC 5322 and user expectations for precise email searches, especially for common hyphenated addresses like "first-last(a)domain.com". If changing defaults, provide upgrade notes for users relying on the current token set. Is there any workaround to search hyphenated local-parts accurately? Best regards, Daniel Levin

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Enable Full-Text search for attachments?
by Alexander Skwar 10 Apr '25

10 Apr '25

Hello Is it possible to enable a full-text search (FTS) for attachments (PDF, Text, Docx, …) using the open source dovecot server? If so, how would I do that? I've read https://doc.dovecot.org/2.3/configuration_manual/fts/ but that wasn't clear to me. Thanks, Alexander

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2.4.1: oauth2 - Error: lua: db-lua: 'auth_passdb_lookup' is not a function
by Luigi Trovato 10 Apr '25

10 Apr '25

Hello, I just upgraded 2.4.0 to 2.4.1 and when trying to authenticate with oauth2 I have this error: auth-worker(lonestar(a)lonestar.it,127.0.0.1)<28029><vtg3yW0yBNh/AAAB>: request [11]: Error: lua: db-lua: 'auth_passdb_lookup' is not a function imap-login: Info: Logged in: user=<lonestar(a)lonestar.it>, method=XOAUTH2, rip=127.0.0.1, lip=127.0.0.1, mpid=28281, secured, session=<vtg3yW0yBNh/AAAB> I actually don't have any auth_passdb_lookup defined in the lua script, only auth_password_verify and auth_userdb_lookup, but it was previously working without errors -- Ciao, Luigi Hello, I just upgraded 2.4.0 to 2.4.1 and when trying to authenticate with oauth2 I have this error: auth-worker(lonestar(a)lonestar.it,127.0.0.1)<28029><vtg3yW0yBNh/AAAB>: request [11]: Error: lua: db-lua: 'auth_passdb_lookup' is not a function imap-login: Info: Logged in: user=<lonestar(a)lonestar.it>, method=XOAUTH2, rip=127.0.0.1, lip=127.0.0.1, mpid=28281, secured, session=<vtg3yW0yBNh/AAAB> I actually don't have any auth_passdb_lookup defined in the lua script, only auth_password_verify and auth_userdb_lookup, but it was previously working without errors -- Ciao, Luigi

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2.4 Error: login_trusted_networks: Invalid network '::1'
by James 10 Apr '25

10 Apr '25

Good afternoon, With this line added to the default dovecot.conf: login_trusted_networks = ::1 I get this error: Apr 10 12:41:22 mailhost dovecot: [ID 702911 mail.info] master: Dovecot v2.4.1-4 (7d8c0e5759) starting up for imap, lmtp Apr 10 12:41:37 mailhost dovecot: [ID 702911 mail.error] imap-login: Error: getaddrinfo() failed: non-recoverable name resolution failure Apr 10 12:41:37 mailhost dovecot: [ID 702911 mail.error] imap-login: Error: login_trusted_networks: Invalid network '::1': user=<>, rip=2a02:1234:abcd:1::3, lip=2a02:1234:abcd:a::2, session=<sA2GEWsyNfIqAoAQ0BwAAQAAAAAAAACH> Version 2.4.1 Works with 2.3.21.1 and many versions before. It complains with any IPv6 address in login_trusted_networks.

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Multiple namespaces with individual quota values from LDAP
by Andreas Oster 10 Apr '25

10 Apr '25

Hi all, I have successfully managed to get individual user qota for inboxes with values from LDAP working on Dovecot 2.4. I achieved this with the help of a posting from Aki Tuomi: <-- I'd recommend moving the storage_size out of quota "User Quota", since it's then easier to override: quota "User quota" { driver = count ... } quota_storage_size = 10G Aki --> However, in my setup I am using a separate namespace for mail "archiving" on a slower storage. I would like to also restrict the available storage space for users individually in this namespace. To achieve this I ideally would like to fetch the value from a different LDAP attribute. Can this be achieved with dovecot 2.4 ? In version 2.3 this was not a problem. Thank you very much for your kind help. Best regards Andraes

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SQL userdb homedir
by Scott Q. 08 Apr '25

08 Apr '25

I am trying to use a stored procedure in sql for returning the various fields for the user. I'm concerned about what happens if the stored procedure fails to retrieve the homedir and other fields, for whatever reason. What should it return to notify dovecot of failure ? a single null field, all fields as null, empty result set ? Thank you I am trying to use a stored procedure in sql for returning the various fields for the user. I'm concerned about what happens if the stored procedure fails to retrieve the homedir and other fields, for whatever reason. What should it return to notify dovecot of failure ? a single null field, all fields as null, empty result set ? Thank you

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Per-User quota with LDAP
by Damien Brémont 07 Apr '25

07 Apr '25

Hi all, I'm trying to setup Per-User quota with LDAP on dovecot 2.4.1 When I try to recalc quota for user, data is retrieved from LDAP server # doveadm quota recalc -u user dovecot: auth: Debug: conn unix:/run/auth-userdb (pid=34516,uid=0): Server accepted connection (fd=20) dovecot: auth: Debug: master in: USER#0111#011user#011protocol=doveadm dovecot: auth(user): Debug: : Performing userdb lookup dovecot: auth(user): Debug: ldap: Performing passdb lookup dovecot: auth(user): Debug: ldap: pass search: base=ou=user,dc=madrid-ias,dc=eu scope=subtree filter=(&(objectClass=posixAccount)(uid=user)) fields=uid,homeDirectory,uidNumber,gidNumber,quotaBytes dovecot: auth(user): Debug: ldap: result: uid=user gidNumber=8 homeDirectory=/home/users_LDAP/user uidNumber=10017 *quotaBytes=32000000* dovecot: auth(user): Debug: ldap: Finished passdb lookup dovecot: auth(user): Debug: : Finished userdb lookup dovecot: auth: Debug: userdb out: USER#0111#011user#011home=/home/users_LDAP/user#011uid=10017#011gid=8#011*quota_storage_size=32000000B* dovecot: auth: Debug: conn unix:/run/auth-userdb (pid=34516,uid=0): auth-master client: Disconnected: Connection closed (fd=20) (created 159 msecs ago, handshake 159 msecs ago) Same when an email is delivered: Debug: master userdb out: USER#0113606183937#011user#011home=/home/users_LDAP/user#011uid=10017#011gid=8#011*quota_storage_size=32000000B*#011auth_mech=PLAIN#011auth_token=8a4a9216541654643f33119dd9a280c672c#011local_name=127.0.0.1 But finally the quota limit is still the default value # doveadm quota get -u user Quota name Type Value Limit % User quota STORAGE 6294796 *10485760 60* User quota MESSAGE 29190 - 0 All my dovecot configuration is available below. About Postfix, dovecot-lda is called with -d option: mailbox_command = /usr/lib/dovecot/dovecot-lda -f "$SENDER" -d "$USER" If you have any idea. Thanks in advance for you help. Best Damien BTW, some "%" seem to be missing in the 2.4 documentation https://doc.dovecot.org/main/core/plugins/quota.html before {ldap:quotaBytes}B *Dovecot version:* 2.4.1-4+ubuntu24.04 *dovecot -n:* # OS: Linux 6.8.0-57-generic x86_64 Ubuntu 24.04.2 LTS ext4 # 4 default setting changes since version 2.4.0 dovecot_config_version = 2.4.0 auth_mechanisms = plain login default_client_limit = 12015 default_process_limit = 3003 default_vsz_limit = 256M dovecot_storage_version = 2.3.0 fts_autoindex = yes fts_autoindex_max_recent_msgs = 999 fts_search_add_missing = yes ldap_base = ou=MyOU,dc=domain,dc=com ldap_uris = ldap://localhost log_debug = category=auth mail_driver = maildir mail_home = /home/users_LDAP/%{user}/Maildir mail_path = /home/users_LDAP/%{user}/Maildir mail_plugins { quota = yes } protocols = imap pop3 sieve ssl_min_protocol = TLSv1.3 passdb ldap { fields { user = %{ldap:uid} userdb_gid = %{ldap:gidNumber} userdb_home = %{ldap:homeDirectory} userdb_quota_storage_size = %{ldap:quotaBytes}B userdb_uid = %{ldap:uidNumber} } bind = yes filter = (&(objectClass=posixAccount)(uid=%{user})) } namespace inbox { mail_driver = maildir mail_path = /home/users_LDAP/%{user}/Maildir hidden = no inbox = yes list = yes prefix = separator = / subscriptions = yes type = private mailbox Drafts { special_use = "\\Drafts" } mailbox Junk { special_use = "\\Junk" } mailbox Trash { special_use = "\\Trash" } mailbox Sent { special_use = "\\Sent" } mailbox "Sent Messages" { special_use = "\\Sent" } } service imap-login { inet_listener imap { } inet_listener imaps { port = 993 ssl = yes } } service pop3-login { inet_listener pop3 { } inet_listener pop3s { } } service submission-login { inet_listener submission { } inet_listener submissions { } } service lmtp { unix_listener lmtp { } } service imap { } service pop3 { } service submission { } service auth { unix_listener auth-userdb { mode = 0777 user = mail } unix_listener /var/spool/postfix/private/auth { mode = 0666 } } service auth-worker { } service dict { unix_listener dict { } } ssl_server { cert_file = /etc/letsencrypt/live/cert/fullchain.pem key_file = /etc/letsencrypt/live/cert/privkey.pem } protocol lda { mail_plugins { sieve = yes } } protocol imap { mail_max_userip_connections = 50 mail_plugins { imap_sieve = yes imap_quota = yes } } service managesieve-login { vsz_limit = 64M inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } } service managesieve { } quota "User quota" { driver = count storage_size = 10G quota_warning warn-95 { quota_storage_percentage = 95 execute quota-warning { args = 95 %{user} } } quota_warning warn-80 { quota_storage_percentage = 80 execute quota-warning { args = 80 %{user} } } } service quota-warning { executable = script /usr/local/bin/quota-warning.sh user = dovecot unix_listener quota-warning { user = mail } } sieve_script personal { active_path = ~/.dovecot.sieve driver = file path = ~/sieve } Hi all, I'm trying to setup Per-User quota with LDAP on dovecot 2.4.1 When I try to recalc quota for user, data is retrieved from LDAP server # doveadm quota recalc -u user dovecot: auth: Debug: conn unix:/run/auth-userdb (pid=34516,uid=0): Server accepted connection (fd=20) dovecot: auth: Debug: master in: USER#0111#011user#011protocol=doveadm dovecot: auth(user): Debug: : Performing userdb lookup dovecot: auth(user): Debug: ldap: Performing passdb lookup dovecot: auth(user): Debug: ldap: pass search: base=ou=user,dc=madrid-ias,dc=eu scope=subtree filter=(&(objectClass=posixAccount)(uid=user)) fields=uid,homeDirectory,uidNumber,gidNumber,quotaBytes dovecot: auth(user): Debug: ldap: result: uid=user gidNumber=8 homeDirectory=/ home/users_LDAP/user uidNumber=10017 quotaBytes=32000000 dovecot: auth(user): Debug: ldap: Finished passdb lookup dovecot: auth(user): Debug: : Finished userdb lookup dovecot: auth: Debug: userdb out: USER#0111#011user#011home=/home/users_LDAP/ user#011uid=10017#011gid=8#011quota_storage_size=32000000B dovecot: auth: Debug: conn unix:/run/auth-userdb (pid=34516,uid=0): auth-master client: Disconnected: Connection closed (fd=20) (created 159 msecs ago, handshake 159 msecs ago) Same when an email is delivered: Debug: master userdb out: USER#0113606183937#011user#011home=/home/users_LDAP/ user#011uid=10017#011gid=8#011quota_storage_size=32000000B#011auth_mech=PLAIN#011auth_token=8a4a9216541654643f33119dd9a280c672c#011local_name=127.0.0.1 But finally the quota limit is still the default value # doveadm quota get -u user Quota name Type Value Limit % User quota STORAGE 6294796 10485760 60 User quota MESSAGE 29190 - 0 All my dovecot configuration is available below. About Postfix, dovecot-lda is called with -d option: mailbox_command = /usr/lib/dovecot/dovecot-lda -f "$SENDER" -d "$USER" If you have any idea. Thanks in advance for you help. Best Damien BTW, some "%" seem to be missing in the 2.4 documentation https:// doc.dovecot.org/main/core/plugins/quota.html before {ldap:quotaBytes}B Dovecot version: 2.4.1-4+ubuntu24.04 dovecot -n: # OS: Linux 6.8.0-57-generic x86_64 Ubuntu 24.04.2 LTS ext4 # 4 default setting changes since version 2.4.0 dovecot_config_version = 2.4.0 auth_mechanisms = plain login default_client_limit = 12015 default_process_limit = 3003 default_vsz_limit = 256M dovecot_storage_version = 2.3.0 fts_autoindex = yes fts_autoindex_max_recent_msgs = 999 fts_search_add_missing = yes ldap_base = ou=MyOU,dc=domain,dc=com ldap_uris = ldap://localhost log_debug = category=auth mail_driver = maildir mail_home = /home/users_LDAP/%{user}/Maildir mail_path = /home/users_LDAP/%{user}/Maildir mail_plugins { quota = yes } protocols = imap pop3 sieve ssl_min_protocol = TLSv1.3 passdb ldap { fields { user = %{ldap:uid} userdb_gid = %{ldap:gidNumber} userdb_home = %{ldap:homeDirectory} userdb_quota_storage_size = %{ldap:quotaBytes}B userdb_uid = %{ldap:uidNumber} } bind = yes filter = (&(objectClass=posixAccount)(uid=%{user})) } namespace inbox { mail_driver = maildir mail_path = /home/users_LDAP/%{user}/Maildir hidden = no inbox = yes list = yes prefix = separator = / subscriptions = yes type = private mailbox Drafts { special_use = "\\Drafts" } mailbox Junk { special_use = "\\Junk" } mailbox Trash { special_use = "\\Trash" } mailbox Sent { special_use = "\\Sent" } mailbox "Sent Messages" { special_use = "\\Sent" } } service imap-login { inet_listener imap { } inet_listener imaps { port = 993 ssl = yes } } service pop3-login { inet_listener pop3 { } inet_listener pop3s { } } service submission-login { inet_listener submission { } inet_listener submissions { } } service lmtp { unix_listener lmtp { } } service imap { } service pop3 { } service submission { } service auth { unix_listener auth-userdb { mode = 0777 user = mail } unix_listener /var/spool/postfix/private/auth { mode = 0666 } } service auth-worker { } service dict { unix_listener dict { } } ssl_server { cert_file = /etc/letsencrypt/live/cert/fullchain.pem key_file = /etc/letsencrypt/live/cert/privkey.pem } protocol lda { mail_plugins { sieve = yes } } protocol imap { mail_max_userip_connections = 50 mail_plugins { imap_sieve = yes imap_quota = yes } } service managesieve-login { vsz_limit = 64M inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } } service managesieve { } quota "User quota" { driver = count storage_size = 10G quota_warning warn-95 { quota_storage_percentage = 95 execute quota-warning { args = 95 %{user} } } quota_warning warn-80 { quota_storage_percentage = 80 execute quota-warning { args = 80 %{user} } } } service quota-warning { executable = script /usr/local/bin/quota-warning.sh user = dovecot unix_listener quota-warning { user = mail } } sieve_script personal { active_path = ~/.dovecot.sieve driver = file path = ~/sieve }

2 2

Pigeonhole: (Sub-)Folders containing emojis not found
by Alexander Skwar 07 Apr '25

07 Apr '25

Hello $ dovecot --version 2.3.21.1 (d492236fa0) I've got the following rule defined:require ["regex","imap4flags","fileinto"];if anyof (address :regex :comparator "i;octet" "from" ".*@(bls\\.ch|redditmail\\.com|mail\\.tagesanzeiger\\.ch|link\\.ch|app\\.intervista\\.ch|news\\.outdooractive\\.com|spschweiz\\.ch|mail\\.landbote\\.ch|sofalesungen\\.ch)$") { fileinto "🗣 MLs Foren/🗞 Newsletter"; addflag "$label6"; stop;} There are also others, of course. In the Sieve log file “a(a)skwar.xyz.sieve.xn--log-9o0a, I find that the filter did not work: error: msgid=<a48c8bad-1d8f-4c29-a41d-e58f2dc2eed6(a)ind1s01mta1013.xt.local>: fileinto action: failed to store into mailbox '🗣 MLs Foren/🗞 Newsletter': Mailbox doesn't exist: 🗣 MLs Foren/🗞 Newsletter. I'm attaching the message as well. The folders DO exist — both parent “🗣 MLs Foren” and subfolder “🗞 Newsletter”. Why's that? I'm using Mailcow v2025-03a; Dovecot: 2.3.21.1 (d492236fa0). I created the folders and filters in SOGo webmail, which is shipped with Mailcow. Thanks, Alexander -- Alexander -- Complete contact details at https://a.skwar.xyz/ Hello $ dovecot --version 2.3.21.1 (d492236fa0) I've got the following rule defined: require ["regex","imap4flags","fileinto"]; if anyof (address :regex :comparator "i;octet" "from" ".*@ (bls\\.ch|redditmail\\.com|mail\\.tagesanzeiger\\.ch|link\\.ch|app\\.intervista\\.ch|news\\.outdooractive\\.com|spschweiz\\.ch|mail\\.landbote\\.ch|sofalesungen\\.ch)$") { fileinto "🗣 MLs Foren/🗞 Newsletter"; addflag "$label6"; stop; } There are also others, of course. In the Sieve log file “a(a)skwar.xyz.sieve.xn--log-9o0a, I find that the filter did not work: error: msgid=<a48c8bad-1d8f-4c29-a41d-e58f2dc2eed6(a)ind1s01mta1013.xt.local>: fileinto action: failed to store into mailbox '🗣 MLs Foren/🗞 Newsletter': Mailbox doesn't exist: 🗣 MLs Foren/🗞 Newsletter. I'm attaching the message as well. The folders DO exist — both parent “🗣 MLs Foren” and subfolder “🗞 Newsletter”. Why's that? I'm using Mailcow v2025-03a; Dovecot: 2.3.21.1 (d492236fa0). I created the folders and filters in SOGo webmail, which is shipped with Mailcow. Thanks, Alexander -- Alexander -- Complete contact details at https://a.skwar.xyz/

1 1

dovecot-pigeonhole 2.4.1 example config files are deprecated
by Peter Varkoly 05 Apr '25

05 Apr '25

dovecot-pigeonhole version 2.4.1 The delivered example configuration files 20-managesieve.conf 90-sieve.conf 90-sieve-extprograms.conf have the syntax of 2.3 and dovecot 2.4.1 can not parse these. Following error messages occurs: Fatal: Error in configuration file /etc/dovecot/conf.d/90-sieve-extprograms.conf line 9: Unknown section name: plugin doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/90-sieve.conf line 24: Unknown section name: plugin 20-managesieve.conf does not cause error messages but does not correspond to what is described under https://doc.dovecot.org/2.4.1/core/plugins/imap_sieve.html -- Peter Varkoly SW Engineering(Systems) SUSE Software Solutions Germany GmbH Frankenstraße 146 D-90461 Nürnberg T +49-(0)911-740 53 0 E <varkoly(a)suse.com> https://www.suse.com/ (HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer dovecot-pigeonhole version 2.4.1 The delivered example configuration files 20-managesieve.conf 90-sieve.conf 90- sieve-extprograms.conf have the syntax of 2.3 and dovecot 2.4.1 can not parse these. Following error messages occurs: Fatal: Error in configuration file /etc/dovecot/conf.d/90-sieve- extprograms.conf line 9: Unknown section name: plugin doveconf: Fatal: Error in configuration file /etc/dovecot/conf.d/90-sieve.conf line 24: Unknown section name: plugin 20-managesieve.conf does not cause error messages but does not correspond to what is described under https://doc.dovecot.org/2.4.1/core/plugins/ imap_sieve.html -- Peter Varkoly SW Engineering(Systems) SUSE Software Solutions Germany GmbH Frankenstraße 146 D-90461 Nürnberg T +49-(0)911-740 53 0 E <varkoly(a)suse.com> https://www.suse.com/ (HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer

1 0

sieve-filter editheader
by Claudinei Luís Bianchini 03 Apr '25

03 Apr '25

Hi, I'm trying to use the editheader extension of sieve, without success. If you can help, I would appreciate it. My setup looks like this: cat 90-sieve.conf plugin { sieve = file:~/sieve;active=~/.dovecot.sieve sieve_plugins = sieve_extprograms sieve_extensions = +body +editheader # with this line it doesn't work either: # sieve_global_extensions = +editheader } dovecot restarted ### # dovecot.sieve # ### # require [ "fileinto", "editheader", "body", "envelope", "imap4flags", "regex", "variables", "relational" ]; # ... sievec dovecot.sieve : dovecot: line 8: error: require command: unknown Sieve capability 'editheader'. dovecot: error: validation failed. sievec(root): Fatal: failed to compile sieve script 'dovecot.sieve' dovecot -n : root@email:/etc/dovecot/conf.d# doveconf -n # 2.3.13 (89f716dc2): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.13 (cdd19fe3) # OS: Linux 5.10.0-23-amd64 x86_64 Debian 11.7 # Hostname: email.netcon.com.br auth_master_user_separator = * auth_mechanisms = PLAIN LOGIN deliver_log_format = from=%{from}, envelope_sender=%{from_envelope}, subject=%{subject}, msgid=%m, size=%{size}, delivery_time=%{delivery_time}ms, %$ dict { acl = mysql:/etc/dovecot/dovecot-share-folder.conf lastlogin = mysql:/etc/dovecot/dovecot-last-login.conf quotadict = mysql:/etc/dovecot/dovecot-used-quota.conf } disable_plaintext_auth = no first_valid_uid = 2000 last_valid_uid = 2000 listen = * [::] login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c %k session=<%{session}> mail_attribute_dict = file:%Lh/dovecot-attributes mail_gid = 2000 mail_location = maildir:%Lh/Maildir/:INDEX=%Lh/Maildir/ mail_plugins = quota mailbox_alias acl mail_log notify mail_uid = 2000 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 imapsieve vnd.dovecot.imapsieve namespace { inbox = yes location = mailbox Archive { auto = no special_use = \Archive } mailbox Archives { auto = no special_use = \Archive } mailbox "Deleted Messages" { auto = no special_use = \Trash } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox "Junk E-mail" { auto = no special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Items" { auto = no special_use = \Sent } mailbox "Sent Messages" { auto = no special_use = \Sent } mailbox Spam { auto = no special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } namespace { list = children location = maildir:%%Lh/Maildir/:INDEX=%%Lh/Maildir/Shared/%%Ld/%%Ln prefix = Shared/%%u/ separator = / subscriptions = yes type = shared } passdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } passdb { args = /etc/dovecot/dovecot-master-users driver = passwd-file master = yes } plugin { acl = vfile acl_shared_dict = proxy::acl imapsieve_mailbox1_before = file:/var/vmail/sieve/report_spam.sieve imapsieve_mailbox1_causes = COPY APPEND imapsieve_mailbox1_name = Junk imapsieve_mailbox2_before = file:/var/vmail/sieve/report_ham.sieve imapsieve_mailbox2_causes = COPY imapsieve_mailbox2_from = Junk imapsieve_mailbox2_name = * imapsieve_url = sieve://127.0.0.1:4190 last_login_dict = proxy::lastlogin last_login_key = # hidden, use -P to show it mail_log_events = delete undelete expunge copy mailbox_create mailbox_delete mailbox_rename mail_log_fields = uid box msgid size from subject flags mailbox_alias_new = Sent Messages mailbox_alias_new2 = Sent Items mailbox_alias_old = Sent mailbox_alias_old2 = Sent quota = dict:user::proxy::quotadict quota_grace = 10%% quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 Mailbox is full quota_status_success = DUNNO quota_warning = storage=100%% quota-warning 100 %u quota_warning2 = storage=95%% quota-warning 95 %u quota_warning3 = storage=90%% quota-warning 90 %u quota_warning4 = storage=85%% quota-warning 85 %u sieve = ~/sieve/dovecot.sieve sieve_before = /var/vmail/sieve/dovecot.sieve sieve_dir = ~/sieve sieve_global_dir = /var/vmail/sieve sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment sieve_max_redirects = 30 sieve_pipe_bin_dir = /etc/dovecot/sieve/pipe sieve_plugins = sieve_imapsieve sieve_extprograms sieve_vacation_send_from_recipient = yes } protocols = pop3 imap sieve lmtp service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0666 user = postfix } unix_listener auth-master { group = vmail mode = 0666 user = vmail } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service dict { unix_listener dict { group = vmail mode = 0660 user = vmail } } service imap-login { process_limit = 500 service_count = 1 } service lmtp { executable = lmtp -L inet_listener lmtp { address = 127.0.0.1 port = 24 } process_min_avail = 5 unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } user = vmail } service managesieve-login { inet_listener sieve { address = 127.0.0.1 port = 4190 } } service pop3-login { service_count = 1 } service quota-status { client_limit = 1 executable = quota-status -p postfix inet_listener { address = 127.0.0.1 port = 12340 } } service quota-warning { executable = script /usr/local/bin/dovecot-quota-warning.sh unix_listener quota-warning { group = vmail mode = 0660 user = vmail } } service stats { fifo_listener stats-mail { mode = 0644 user = vmail } inet_listener { address = 127.0.0.1 port = 24242 } unix_listener stats-writer { group = vmail mode = 0660 user = vmail } } ssl = required ssl_cert = </etc/letsencrypt/live/imap.netcon.com.br/fullchain.pem ssl_cipher_list = EECDH+CHACHA20:EECDH+AESGCM:EDH+AESGCM:AES256+EECDH ssl_key = # hidden, use -P to show it ssl_min_protocol = TLSv1.2 ssl_prefer_server_ciphers = yes syslog_facility = local5 userdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } protocol lda { lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_plugins = quota mailbox_alias acl mail_log notify sieve } protocol lmtp { lmtp_save_to_detail_mailbox = yes mail_plugins = quota mailbox_alias acl mail_log notify sieve recipient_delimiter = + } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_max_userip_connections = 30 mail_plugins = quota mailbox_alias acl mail_log notify imap_quota imap_acl last_login imap_sieve } protocol pop3 { mail_max_userip_connections = 30 mail_plugins = quota mailbox_alias acl mail_log notify last_login pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } root@email:/etc/dovecot/conf.d# -- Claudinei Luís Bianchini nei(a)netcon.com.br

2 1

Late E-Mails
by Kent Borg 03 Apr '25

03 Apr '25

This morning I noticed e-mail out of sequence. I looked in `/var/log/mail.log` and postfix seems to have handled them correctly, recording the same things for them as any other e-mail, and in sensible sequence with the surrounding timestamps. But in my e-mail client (Thunderbird) some were delayed when viewed as I always do by "Order Received". These are the examples I noticed, when compared to surrounding messages: * 1 delayed ~3-hours, then 4-hours after that… * 7 delayed ~16-hours, followed immediately by… * 2 delayed over 5-hours. Other notes: * Thunderbird was not running at the time that these came in (that computer was asleep). * I am running dsync between two servers and both servers show the same details in Thunderbird (so syncing seems working). * I don't notice any dovecot errors in the log in the vicinity of when the delayed e-mails were processed by postfix, nor when the surrounding e-mails were processed by postfix. * There were no reboots during this period. * I do see some other little timestamp "errors", but these seem to be mailing list messages getting an internal timestamp a couple minutes before the message got delivered to my server (I also will see spam with completely false timestamps, but that it not what is going on here). Does Dovecot sometimes not notice new mail? Thanks, -kb/ / This morning I noticed e-mail out of sequence. I looked in `/var/log/mail.log` and postfix seems to have handled them correctly, recording the same things for them as any other e-mail, and in sensible sequence with the surrounding timestamps. But in my e-mail client (Thunderbird) some were delayed when viewed as I always do by "Order Received". These are the examples I noticed, when compared to surrounding messages: * 1 delayed ~3-hours, then 4-hours after that… * 7 delayed ~16-hours, followed immediately by… * 2 delayed over 5-hours. Other notes: * Thunderbird was not running at the time that these came in (that computer was asleep). * I am running dsync between two servers and both servers show the same details in Thunderbird (so syncing seems working). * I don't notice any dovecot errors in the log in the vicinity of when the delayed e-mails were processed by postfix, nor when the surrounding e- mails were processed by postfix. * There were no reboots during this period. * I do see some other little timestamp "errors", but these seem to be mailing list messages getting an internal timestamp a couple minutes before the message got delivered to my server (I also will see spam with completely false timestamps, but that it not what is going on here). Does Dovecot sometimes not notice new mail? Thanks, -kb

1 0

Issue: Attachment from Later Email Appears on Earlier Email
by postfix_dovecot＠gmx.de 03 Apr '25

03 Apr '25

Hello, Today, I encountered a very strange phenomenon, and I'm not sure if Dovecot is involved: A user sent an email at 11:55 AM with a PDF attachment. When checking their inbox in Outlook, they noticed that this exact PDF had somehow been attached to an email that was originally received at 10:50 AM. I verified the timestamps in the logs, and they are correct. So essentially, the attachment from a later-sent email was appended to an earlier-received email sitting in the inbox-even though the two messages are completely unrelated. I have never seen anything like this before-how is this even possible? Does anyone have any advice? Thanks in advance! Jens Hello, Today, I encountered a very strange phenomenon, and I’m not sure if Dovecot is involved: A user sent an email at 11:55 AM with a PDF attachment. When checking their inbox in Outlook, they noticed that this exact PDF had somehow been attached to an email that was originally received at 10:50 AM. I verified the timestamps in the logs, and they are correct. So essentially, the attachment from a later-sent email was appended to an earlier-received email sitting in the inbox—even though the two messages are completely unrelated. I have never seen anything like this before—how is this even possible? Does anyone have any advice? Thanks in advance! Jens

2 1

[Dovecot] auth: Error: net_connect_unix(anvil-auth-penalty) failed: Permission denied
by mailing＠securitylabs.it 03 Apr '25

03 Apr '25

Hello, just upgraded one of my testing machine from dovecot 1.2.15 to 2.0.7. After some trouble with permissions now all seems working, but when I stop dovecot I have these errors in log: Nov 9 17:08:07 in dovecot: master: Warning: Killed with signal 15 (by pid=20362 uid=0 code=kill) Nov 9 17:08:07 in dovecot: pop3-login: Error: read(anvil) failed: EOF Nov 9 17:08:07 in dovecot: imap-login: Error: read(anvil) failed: EOF Nov 9 17:08:07 in dovecot: imap(mailing(a)securitylabs.it): Server shutting down. bytes=410/59361 Nov 9 17:08:07 in dovecot: imap(mailing(a)securitylabs.it): Server shutting down. bytes=79/26605 Nov 9 17:08:07 in dovecot: imap(mailing(a)securitylabs.it): Server shutting down. bytes=802/55708 Nov 9 17:08:07 in dovecot: imap(mailing(a)securitylabs.it): Server shutting down. bytes=258/1242 Nov 9 17:08:07 in dovecot: auth: Error: read(anvil-auth-penalty) failed: EOF Nov 9 17:08:07 in dovecot: auth: Error: net_connect_unix(anvil-auth-penalty) failed: Permission denied dovecot -n: # 2.0.7: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-xen-686 i686 Debian squeeze/sid auth_cache_negative_ttl = 2 mins auth_cache_size = 1000 M auth_cache_ttl = 2 mins auth_master_user_separator = * auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@& disable_plaintext_auth = no dotlock_use_excl = yes first_valid_uid = 100 last_valid_uid = 105 lock_method = dotlock log_timestamp = "%Y-%m-%d %H:%M:%S " login_greeting = Server ready. mail_fsync = never mail_gid = Debian-exim mail_location = maildir:~/Maildir:INDEX=/var/indexes/%d/%n mail_privileged_group = Debian-exim mail_uid = Debian-exim 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 namespace { inbox = yes location = prefix = separator = / type = private } namespace { location = maildir:~/Maildir/expunged prefix = EXPUNGED/ separator = / type = private } namespace { location = maildir:~/Maildir/deleted prefix = DELETED/ separator = / type = private } namespace { location = maildir:~/Maildir/deleted/expunged prefix = DELETED/EXPUNGED/ separator = / type = private } passdb { args = /usr/local/etc/dovecot-sql.conf driver = sql } passdb { args = /usr/local/etc/passwd.masterusers driver = passwd-file master = yes pass = yes } plugin { lazy_expunge = EXPUNGED/ DELETED/ DELETED/EXPUNGED/ mail_log_events = delete expunge mail_log_group_events = quota = maildir quota_warning = storage=80%% /usr/local/bin/dovecot-quota-warning.sh 80 quota_warning2 = storage=90%% /usr/local/bin/dovecot-quota-warning.sh 90 sieve = ~/.dovecot.sieve } pop3_no_flag_updates = yes protocols = imap pop3 service auth { unix_listener auth-userdb { group = Debian-exim mode = 0600 user = Debian-exim } } service imap-login { client_limit = 256 process_limit = 128 process_min_avail = 3 service_count = 1 } service imap { drop_priv_before_exec = yes process_limit = 256 vsz_limit = 256 B } service pop3-login { client_limit = 256 process_limit = 128 process_min_avail = 3 service_count = 1 } service pop3 { drop_priv_before_exec = yes process_limit = 256 vsz_limit = 256 B } ssl_cert = </usr/local/etc/dovecot.crt ssl_key = </usr/local/etc/dovecot.key userdb { args = /usr/local/etc/dovecot-sql.conf driver = sql } protocol imap { mail_max_userip_connections = 10 mail_plugins = " notify quota imap_quota mail_log lazy_expunge" } protocol pop3 { mail_max_userip_connections = 3 mail_plugins = " notify quota mail_log" pop3_uidl_format = %08Xu%08Xv } protocol lda { mail_plugins = quota sieve postmaster_address = postmaster(a)securitylabs.it } My /usr/local/var/run/dovecot directory: 4 drwxr-sr-x 4 root staff 4096 Nov 9 17:08 . 4 drwxrwsrwx 3 root staff 4096 Nov 9 17:05 .. 0 srw------- 1 root staff 0 Nov 9 17:05 anvil 0 srw------- 1 root staff 0 Nov 9 17:05 anvil-auth-penalty 0 srw------- 1 root staff 0 Nov 9 17:05 auth-client 0 srw------- 1 dovecot staff 0 Nov 9 17:05 auth-login 0 srw------- 1 root staff 0 Nov 9 17:05 auth-master 0 srw------- 1 Debian-exim Debian-exim 0 Nov 9 17:05 auth-userdb 0 srw------- 1 dovecot staff 0 Nov 9 17:05 auth-worker 0 srw------- 1 root staff 0 Nov 9 17:05 config 0 srw------- 1 root staff 0 Nov 9 17:05 dict 0 srw------- 1 root staff 0 Nov 9 17:05 director-admin 0 srw-rw-rw- 1 root staff 0 Nov 9 17:05 dns-client 0 srw------- 1 root staff 0 Nov 9 17:05 doveadm-server 0 lrwxrwxrwx 1 root staff 35 Nov 9 17:05 dovecot.conf -> /usr/local/etc/dovecot/dovecot.conf 4 drwxr-xr-x 2 root root 4096 Nov 9 17:05 empty 4 drwxr-x--- 2 root dovenull 4096 Nov 9 17:05 login My emails are delivered as user Debian-exim and users are virtual in a MySQL DB. This system is behind a proxy (so the master user)

3 2

lmtp problems with dovecot while seeking to build dovecot, postfix, mailman3, opendkim on Debian 12
by pjbondi＠systemdatabase.com 02 Apr '25

02 Apr '25

Hello to all: I have been trying to integrate and to stand up dovecot, postfix, mailman3 and opendkim. I have been studying the following: - https://www.frontline.ro/en/blog/how-to-configure-opendkim-with-postfix-on-… - https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/docs/mta.h… - https://www.linuxbabe.com/mail-server/build-email-server-from-scratch-debia… - https://www.linuxbabe.com/mail-server/install-dovecot-imap-server-debian This appears to be the best available coaching, but it would take me weeks to find the time to follow this post: - https://pieterhollander.nl/post/mailserver/ I was trying to place the Maildir outside my Debian 12 virtual machine for easier backup. The directory /Debian-12-dovecot-Maildir is setup as NFS share on my NAS. I can orchestrate a daily backup or an rclone of that to OneDrive or some other cloud target via my NAS. I have these errors: Apr 02 11:17:01 shackleton12 postfix/local[795238]: CA26A2D23: passing <mailman(a)systemdatabase.ca> to transport=lmtp Apr 02 11:17:01 shackleton12 postfix/local[795238]: warning: connect #1 to subsystem private/lmtp: Connection refused Apr 02 11:07:00 shackleton12 systemd[1]: Starting dovecot.service - Dovecot IMAP/POP3 email server... Apr 02 11:07:00 shackleton12 dovecot[789615]: Error: service(lmtp): Socket already exists: /var/spool/postfix/private/dovecot-lmtp Apr 02 11:07:00 shackleton12 dovecot[789615]: master: Error: service(lmtp): Socket already exists: /var/spool/postfix/private/dovecot-lmtp Apr 02 11:07:00 shackleton12 dovecot[789615]: Fatal: Failed to start listeners Apr 02 11:07:00 shackleton12 dovecot[789615]: master: Fatal: Failed to start listeners Apr 02 11:07:00 shackleton12 systemd[1]: dovecot.service: Main process exited, code=exited, status=89/n/a Apr 02 11:07:00 shackleton12 systemd[1]: dovecot.service: Failed with result 'exit-code'. Apr 02 11:07:00 shackleton12 systemd[1]: Failed to start dovecot.service - Dovecot IMAP/POP3 email server. postconf -n doveconf -n postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no compatibility_level = 3.6 inet_protocols = ipv4 local_recipient_maps = hash:/opt/mailman/mm/var/data/postfix_lmtp mailbox_size_limit = 0 mailbox_transport = lmtp:unix:private/dovecot-lmtp masquerade_domains = systemdatabase.ca milter_default_action = accept milter_protocol = 2 mydestination = $myhostname, systemdatabase.ca, localhost.systemdatabase.ca, localhost, systemdatabase.homelinux.com mydomain = systemdatabase.ca myhostname = systemdatabase.ca mynetworks = 127.0.0.0/8 myorigin = systemdatabase.ca non_smtpd_milters = $smtpd_milters owner_request_special = no proxy_interfaces = 192.168.1.8 readme_directory = no recipient_delimiter = + relay_domains = hash:/opt/mailman/mm/var/data/postfix_domains relayhost = [smtp.bellnet.ca]:25 smtp_tls_loglevel = 1 smtp_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1 smtp_tls_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1 smtp_tls_security_level = may smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) smtpd_milters = inet:localhost:8891 smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination permit_inet_interfaces smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination permit_inet_interfaces smtpd_tls_cert_file = /etc/letsencrypt/live/systemdatabase.ca-0001/fullchain.pem smtpd_tls_key_file = /etc/letsencrypt/live/systemdatabase.ca-0001/privkey.pem smtpd_tls_loglevel = 1 smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1 smtpd_tls_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1 smtpd_tls_security_level = may smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtputf8_enable = no transport_maps = hash:/opt/mailman/mm/var/data/postfix_lmtp unknown_local_recipient_reject_code = 550 doveconf -n # 2.3.19.1 (9b53102964): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.19 (4eae2f79) # OS: Linux 6.1.0-32-amd64 x86_64 Debian 12.10 nfs4 # Hostname: shackleton12.systemdatabase.ca auth_mechanisms = plain login auth_username_format = %n mail_location = maildir:/Debian-12-dovecot-Maildir/%d-%u-Maildir mail_privileged_group = mail 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 = } passdb { driver = pam } protocols = imap lmtp service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } ssl_cert = </etc/letsencrypt/live/systemdatabase.ca-0001/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 ssl_prefer_server_ciphers = yes userdb { driver = passwd }

2 1

Bug: dovecot 2.3.21.1 fails to build with recent ICU
by Marcel Telka 01 Apr '25

01 Apr '25

Hi, dovecot 2.3.21.1 fails to build with ICU 77. There are also reports it does not build with ICU 76 for the same reason: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=284832 There is no issue when built with ICU 75. The failure is this: /bin/bash ../../libtool --tag=CC --mode=link /usr/gcc/14/bin/gcc -std=gnu99 -m64 -O3 -Wno-incompatible-pointer-types -fstack-protector-strong -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -mfunction-return=keep -mindirect-branch=keep -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno-builtin-strftime -Wstrict-aliasing=2 -I/usr/openssl/3/include -no-undefined -m64 -o test-fts-icu test-fts-icu.o fts-icu.lo -licui18n ../lib-test/libtest.la ../lib/liblib.la -lsocket -lnsl -lsendfile libtool: link: /usr/gcc/14/bin/gcc -std=gnu99 -m64 -O3 -Wno-incompatible-pointer-types -fstack-protector-strong -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -mfunction-return=keep -mindirect-branch=keep -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno-builtin-strftime -Wstrict-aliasing=2 -I/usr/openssl/3/include -m64 -o test-fts-icu test-fts-icu.o .libs/fts-icu.o -licui18n ../lib-test/.libs/libtest.a ../lib/.libs/liblib.a -lsocket -lnsl -lsendfile Undefined first referenced symbol in file ucasemap_utf8ToLower_77 .libs/fts-icu.o (symbol belongs to implicit dependency /usr/lib/amd64/libicuuc.so.77) u_strFromUTF8Lenient_77 .libs/fts-icu.o (symbol belongs to implicit dependency /usr/lib/amd64/libicuuc.so.77) u_errorName_77 .libs/fts-icu.o (symbol belongs to implicit dependency /usr/lib/amd64/libicuuc.so.77) u_cleanup_77 .libs/fts-icu.o (symbol belongs to implicit dependency /usr/lib/amd64/libicuuc.so.77) ucasemap_close_77 .libs/fts-icu.o (symbol belongs to implicit dependency /usr/lib/amd64/libicuuc.so.77) u_strToUTF8WithSub_77 .libs/fts-icu.o (symbol belongs to implicit dependency /usr/lib/amd64/libicuuc.so.77) ucasemap_open_77 .libs/fts-icu.o (symbol belongs to implicit dependency /usr/lib/amd64/libicuuc.so.77) ld: fatal: symbol referencing errors. No output written to test-fts-icu collect2: error: ld returned 1 exit status The workaround is easy: to add -licuuc to LDFLAGS, however it would be great if dovecot builds without any workarounds needed. Thank you. -- +-------------------------------------------+ | Marcel Telka e-mail: marcel(a)telka.sk | | homepage: http://telka.sk/ | +-------------------------------------------+

3 2

Dovecot v2.4.1 released
by Aki Tuomi 31 Mar '25

31 Mar '25

Hi! We arey happy to release Dovecot v2.4.1! Some IMPORTANT things to notice (still): - We have changed the signing key for 2.4 going forward, releases are signed with EF0882079FD4ED32BF8B23B2A1B09EF84EDC5219, which can be found at https://repo.dovecot.org/DOVECOT-REPO-GPG-2.4 and is signed with the previous key. The old key has been renamed to https://repo.dovecot.org/DOVECOT-REPO-GPG-2.3. - New 2.4 packages **are not** compatible with old 2.3 configuration, please carefully review https://doc.dovecot.org/2.4.1/installation/upgrade/2.3-to-2.4.html before installing the new packages. - We are happy to provide experimental arm64 support in the form of a Docker image. There are now three kinds of images, latest, latest-dev and latest-root. - The latest docker image is now ran rootless, with UID 1000 as vmail. Please take this into consideration when upgrading. The latest-root image still runs as root. Latest 2.3 image can be used with tag 2.3-latest still We won't be sending separate mail about Pigeonhole anymore as we will release one anyways when we release Dovecot, and Pigeonhole versioning has been changed to match Dovecot versioning. Source codes available at - https://www.dovecot.org/releases/2.4/dovecot-2.4.1.tar.gz - https://www.dovecot.org/releases/2.4/dovecot-2.4.1.tar.gz.sig - https://pigeonhole.dovecot.org/releases/2.4/dovecot-pigeonhole-2.4.1.tar.gz - https://pigeonhole.dovecot.org/releases/2.4/dovecot-pigeonhole-2.4.1.tar.gz… Binary packages in https://repo.dovecot.org/ Docker images in https://hub.docker.com/r/dovecot/dovecot Kind regards, Aki Tuomi Open-Xchange oy --- Dovecot Core NEWS ----------------- * auth: Change unix_listener/auth-userdb/group = $SET:default_internal_group This change needs dovecot_config_version=2.4.1. * auth: lua - Remove support for single string result. * imap: Unconditionally advertise SPECIAL-USE capability. * lib-dcrypt: Install dcrypt_openssl.so into dovecot modules directory. * lib-master: For glibc, default MALLOC_MMAP_THRESHOLD_=131072. * lib-storage: Change default mail_cache_fields to: hdr.date hdr.subject hdr.from hdr.sender hdr.reply-to hdr.to hdr.cc hdr.bcc hdr.in-reply-to hdr.message-id date.received size.virtual imap.bodystructure mime.parts hdr.references hdr.importance hdr.x-priority hdr.x-open-xchange-share-url pop3.uidl pop3.order. This change needs dovecot_config_version=2.4.1. * lib-var-expand: Use moduledir instead of pkglibdir for crypt. * lmtp: Change the default lmtp_user_concurrency_limit to 10. This change needs dovecot_config_version=2.4.1. * lmtp: Change the default service_restart_request_count to 1. This change needs dovecot_config_version=2.4.1. + auth: Allow configuring passdb/userdb sql to use auth-workers. + config: Add default group @mailbox_defaults = english. + config: Improve "Unknown setting" error with more details and suggestions. + doveconf: Add -U parameter to ignore unknown settings in config file. + fts-flatcurve: Support lock files in VOLATILEDIR. + imap-acl: Add support for the IMAP LIST-MYRIGHTS capability (RFC 8440). + imap-client: Support ANONYMOUS authentication. + imap: Implement support for the REPLACE capability. - auth: ldap - Passdb fields were ignored with passdb_ldap_bind_userdn=yes. - auth: lua - Fix error result handling in lua passdb/userdb. - auth: oauth2 - When building oauth2 failure reply, memory would leak. - config: local_name handling would work wrong with multiple names and wildcards. - fts-flatcurve: A potential crash could occur when searching virtual mailboxes. Fixes: Panic: file fts-search.c: line 87 (level_scores_add_vuids): assertion failed: (array_count(&vuids_arr) == array_count(&br->scores)) - fts-flatcurve: Maybe queries were done wrong. - fts-flatcurve: Non-selectable mailboxes were not ignored when doing optimize/rescan. - fts-flatcurve: Signal 11 crash could happen with fts rescan. - fts: Fix crash caused by event object lifecycle mishandling. - imap-hibernate: Client counters would get reset on unhibernation, affecting imap_logout_format variables. - imap: Crash would occur with Maildir when trying to send INPROGRESS during mailbox syncing. - ldap: Dovecot could not be compiled without LDAP. - lib-dcrypt: Output stream encryption can cause assert crash if attempting to encrypt over 64 GiB of data with GCM. This is still not supported with GCM, but it fails better. - lib-http: HTTP client context memory usage was increasing. - lib-http: Pipeline corruption could happen after 100 Continue response. - lib-settings: Variable expansion initialization could crash with Panic: file settings.c: line 1560 (settings_var_expand_init_add): assertion failed: (I_MAX(num_tables, num_provs) == num_ctx) - lib-smtp: Pipelining initial SASL response after AUTH was broken. - lib-var-expand: If filter failed, memory leak would occur. - lib-var-expand: Older bison versions did not have error symbol for handling causing unexpected behaviour on the parser on error conditions. - quota: Quota calculations had minor bugs causing small errors. Pigeonhole NEWS --------------- - global: Fix settings handling bugs. Especially %variables weren't working in various settings. - ldap: Pigeonhole could not be built without LDAP.

5 8

Bug: Inconsistency in configuration between various clients.
by Louis Schmitz 27 Mar '25

27 Mar '25

We found out about this through a misconfiguration in our web panel. In the main config file the following line includes a subdirectory; !include conf.d/*.conf The web panel created the following two relevant configuration snippets in /etc/dovecot/conf.d/ 11-plesk-security-ssl.conf > ssl_dh=</opt/psa/etc/dhparams2048.pem > ssl_min_protocol=TLSv1.2 > ssl_cipher_list=EECDH+AESGCM+AES128:EECDH+AESGCM+AES256:EECDH+CHACHA20:EECDH+SHA256+AES128:EECDH+SHA384+AES256:EECDH+SHA1+AES128:EECDH+SHA1+AES256:EECDH+HIGH:AESGCM+AES128:AESGCM+AES256:CHACHA20:SHA256+AES128:SHA256+AES256:SHA1+AES128:SHA1+AES256:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK:!KRB5:!aECDH:!kDH:!EDH > ssl_prefer_server_ciphers=yes > ssl=yes > ssl_cert=</etc/dovecot/private/dovecot.pem > ssl_key=</etc/dovecot/private/dovecot.pem This sets a server wide certificate as being the cert in /etc/dovecot/private/dovecot.pem. Let's say our main server domain is 'acme.com' for example, its 'hostname' (linux hostname) is for example 's02.acme.com'. Then it would also create 14-plesk-sni-mail.acme.com.conf, containing something akin to: > local_name mail.acme.com { > ssl_cert = </opt/psa/var/certificates/scf7b9lcY > ssl_key = </opt/psa/var/certificates/scf7b9lcY > } These point to the ssl cert and key configured for that specific vhost (not the entire server), which can be different from that configured for the server. When some clients connected to the server (connecting to mail.acme.com) it would serve the /etc/dovecot/private/dovecot.pem certificate. This was renewed and the clients would work without issue. Other clients, however, used the certificate at /opt/psa/var/certificates/scf7b9lcY. This certificate is supposed to be the same, but expired and wasn't renewed along with the other one. This was tricky to figure out since the problems did not appear on our side, only when looking at a client. Once I went around the panel GUI and into the actual dovecot configuration files I found the culprit(s). I think, but do not know, that it could be related to which IP protocol (V4 or V6) is used to connect to dovecot. All clients who failed happened to connect over V6. The cases that did not used V4. This seems entirely unrelated and strange behaviour that must be a bug of some kind. Either both should use the one certificate, or the other, or there should be an error or warning if local_name includes a variant subdomain of the server name, the latter in addition to making a consistent choice. It appears that sometimes the first relevant ssl_key and ssl_cert are used, and other times the second when the option is included twice in the configuration, pointing to different matching certificates/keys. It's not apparently a race condition: The behaviour is very consistent for the same client connecting.

1 0

Input Buffer Full with OAuth login
by Brad Koehn 26 Mar '25

26 Mar '25

I’m running Dovecot 2.3.21.1 using Authentik for OAuth authentication. I’m using SOGo 5.12.0 as a UI, also with OAuth authentication. When SOGo connects to Dovecot and authenticates with OAuth, it fails and the following is logged: imap-login: Info: Disconnected: Input buffer full (no auth attempts in 0 secs): user=<>, rip=10.42.1.1, lip=10.42.1.196, TLS, session=<NZnp7zMxQuMKKgEB> My dovecot-oauth2.conf.ext looks like this: openid_configuration_url = https://auth.koehn.com/application/o/dovecot-oauth2/.well-known/openid-conf… introspection_url = https://auth.koehn.com/application/o/introspect/ introspection_mode = post client_id = [redacted] client_secret = [redacted] username_attribute = email debug = yes rawlog_dir = /tmp/oauth2 And my auth-oauth2.conf.ext looks like this: passdb { driver = oauth2 mechanisms = xoauth2 oauthbearer args = /etc/dovecot/conf.d/dovecot-oauth2.conf.ext } I’m using the Dovecot Debian packages from repo.dovecot.org. I’ve tried auth for introspection_mode, to no avail. There’s nothing extra in the logs when I turn on debug, and there’s nothing logged in the /tmp/oauth2 directory either, FWIW. Any ideas? — Brad I’m running Dovecot 2.3.21.1 using Authentik for OAuth authentication. I’m using SOGo 5.12.0 as a UI, also with OAuth authentication. When SOGo connects to Dovecot and authenticates with OAuth, it fails and the following is logged: imap-login: Info: Disconnected: Input buffer full (no auth attempts in 0 secs): user=<>, rip=10.42.1.1, lip=10.42.1.196, TLS, session=<NZnp7zMxQuMKKgEB> My dovecot-oauth2.conf.ext looks like this: openid_configuration_url = https://auth.koehn.com/application/o/dovecot- oauth2/.well-known/openid-configuration introspection_url = https://auth.koehn.com/application/o/introspect/ introspection_mode = post client_id = [redacted] client_secret = [redacted] username_attribute = email debug = yes rawlog_dir = /tmp/oauth2 And my auth-oauth2.conf.ext looks like this: passdb { driver = oauth2 mechanisms = xoauth2 oauthbearer args = /etc/dovecot/conf.d/dovecot-oauth2.conf.ext } I’m using the Dovecot Debian packages from repo.dovecot.org. I’ve tried auth for introspection_mode, to no avail. There’s nothing extra in the logs when I turn on debug, and there’s nothing logged in the /tmp/ oauth2 directory either, FWIW. Any ideas? — Brad

3 3

Dovecot and IP check at the user connection (auth-worker problems: no IP...)
by ik7xja＠gmail.com 26 Mar '25

26 Mar '25

Hi to all, I'm using Postfix and Dovecot for my little server. I'm experimenting many false user caming fron the entire world to access to my account. I'm only in a country and I would like to restrict accesso to user coming from IPs located in my country. Since the access is granteg by mysql and SQL in passdb and userdb, I've created a table with only the IPs of my country and check the user remote IP. The trick is working well when I try to access to my account beacuse the variable "%r" is not empy... But... But when there is a delivery of a new message, the auth-worker have no IP and the check fail: auth-worker<5>: sql(user(a)my.domain): unknown user and the new message, coming in my box from other servers come back to the sender as "unknown user" There is a way to user a different query in this auth-worker process (I guess is using the same SQL with the IP-check)? Or "force" an IP (like 127.0.0.1) in the auth-worker invocation? Thanks in advance for any advice.

1 1