- dovecot - dovecot.org

"Modseq 34839 no longer in transaction log"
by Kent Borg 29 Jan '25

29 Jan '25

My new custom-built .deb packages seem to work, or at least work better! When new e-mails come in, it quickly attempts a sync, but says it fails: > Jan 29 10:31:49 la dovecot[1199]: doveadm: Error: > doveadm(kentborg)<2465><gL2eARV0mmehCQAAA3PmQQ>: Warning: Failed to do > incremental sync for mai\ > lbox INBOX, retry with a full sync (Modseq 34839 no longer in > transaction log (highest=37557, last_common_uid=12476, nextuid=12614)) Is this a leftover problem from my earlier crashes? I tried a full sync ("doveadm replicator replicate -f kentborg") and rebooting both machines, but I still get the error when new e-mails come in. The number in the error increments by three the several times I have seen this so far. Is there a way to make this happy? Thanks, -kb P.S. I am only doing one-way syncing so far.

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Why does metrics exporter not work anymore?
by Christian Rößner 29 Jan '25

29 Jan '25

Hi, I am trying to get the metrics exporter to work in 2.4.0, but for some reason, I do not see any connection attempts to the named http server nor do I get any errors: $ doveconf -n # 2.4.0 (daeb6bc59c): /etc/dovecot/dovecot.conf # Pigeonhole version 2.4.0 (1b2d5bb9) # OS: Linux 6.10.14-linuxkit x86_64 Debian 12.9 # Hostname: b7638a15bee0 dovecot_config_version = 2.4.0 auth_allow_cleartext = yes auth_cache_verify_password_with_worker = yes auth_failure_delay = 0 secs auth_mechanisms = auth_mechanisms { plain = yes login = yes } auth_username_format = %{user | username | lower} debug_log_path = /dev/stdout default_internal_group = vmail default_internal_user = vmail default_login_user = vmail dovecot_storage_version = 2.4.0 first_valid_uid = 1000 imap_id_retain = yes info_log_path = /dev/stdout last_valid_uid = 1000 listen = listen { * = yes } lmtp_proxy = yes log_path = /dev/stdout mail_debug = yes mail_driver = sdbox mail_gid = vmail mail_home = /srv/mail/%Ln mail_path = ~/Mail mail_uid = vmail protocols { imap = yes pop3 = yes lmtp = yes } ssl = no verbose_proctitle = yes namespace inbox { inbox = yes separator = / } service lmtp { inet_listener lmtp { port = 24 ssl = no } } service imap-login { client_limit = 100 process_min_avail = 1 restart_request_count = unlimited inet_listener imap { port = 143 } } service pop3-login { client_limit = 100 process_min_avail = 1 restart_request_count = unlimited inet_listener pop3 { port = 110 } } event_exporter log { driver = log format = json time_format = rfc3339 } event_exporter conn_state { driver = http-post format = json http_post_url = http://nauthilus:8080/api/v1/custom/dovecot-session-cleaner time_format = rfc3339 http_client_request_absolute_timeout = 5sec } metric client_disconnect_http { exporter = conn_state exporter_include = exporter_include { name = yes hostname = yes timestamps = yes categories = yes fields = yes } filter = event=mail_user_session_finished AND (category=imap OR category=pop3 OR category=lmtp OR category=sieve) } metric imap_noop { exporter = conn_state exporter_include = exporter_include { name = yes hostname = yes timestamps = yes categories = yes fields = yes } filter = event=imap_command_finished AND cmd_name=NOOP } passdb lua { lua_file = /etc/dovecot/auth.lua } userdb prefetch { } userdb lua { auth_verbose = no lua_file = /etc/dovecot/auth.lua result_failure = return-fail result_internalfail = return-fail result_success = continue-ok skip = never } It is an example Docker setup found here: https://github.com/croessner/nauthilus-demo There are no error logs in dovecot. Thanks in advance Christian Rößner -- Rößner-Network-Solutions Zertifizierter ITSiBe / CISO Marburger Str. 70a, 36304 Alsfeld Fax: +49 6631 78823409, Mobil: +49 171 9905345 USt-IdNr.: DE225643613, https://roessner.website PGP fingerprint: 658D 1342 B762 F484 2DDF 1E88 38A5 4346 D727 94E5

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Fwd: dovecot: master: Warning: service(imap-login): process_limit (100) reached, client connections are being dropped
by Stephane De Greef 28 Jan '25

28 Jan '25

-------- Message transféré -------- Sujet : Re: dovecot: master: Warning: service(imap-login): process_limit (100) reached, client connections are being dropped Date : Tue, 28 Jan 2025 11:22:35 +0100 De : Stephane De Greef <stephane.degreef(a)pacapime.be> Pour : dovecot-owner(a)dovecot.org doveconf -n # 2.3.19.1 (9b53102964): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.19 (4eae2f79) # OS: Linux 6.1.0-30-amd64 x86_64 Debian 12.9 ext4 # Hostname: pacapime.ovh auth_mechanisms = plain login mail_gid = 8 mail_home = /var/mail/%n mail_location = maildir:/var/mail/%n mail_plugins = " quota notify push_notification" mail_uid = 500 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext namespace inbox { inbox = yes location = mailbox Archive { auto = subscribe special_use = \Archive } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } passdb { args = /etc/dovecot/app-senders-passwd driver = passwd-file } plugin { antispam_backend = pipe antispam_debug_target = syslog antispam_pipe_program = /usr/bin/rspamc antispam_pipe_program_args = -h;localhost:11334;-P;q1 antispam_pipe_program_notspam_arg = learn_ham antispam_pipe_program_spam_arg = learn_spam antispam_spam_pattern_ignorecase = junk;spam antispam_trash_pattern_ignorecase = trash;papierkorb;deleted messages antispam_verbose_debug = 0 quota = maildir:User quota quota_rule2 = SPAM:ignore quota_rule3 = Trash:ignore quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u quota_warning3 = -storage=100%% quota-warning below %u sieve = /var/mail/sievescript/%n/.dovecot.sieve sieve_before = /etc/dovecot/global_script/ sieve_dir = /var/mail/sievescript/%n/scripts/ } protocols = imap sieve service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-master { group = mail mode = 0660 user = vmail } } service quota-warning { executable = script /usr/bin/quota-warning.sh user = vmail } service stats { unix_listener stats-reader { group = mail mode = 0660 user = vmail } unix_listener stats-writer { group = mail mode = 0660 user = vmail } } ssl = required ssl_cert = </etc/yunohost/certs/pacapime.ovh/crt.pem ssl_cipher_list = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305 ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } userdb { args = username_format=%n /etc/dovecot/app-senders-passwd driver = passwd-file } protocol imap { imap_client_workarounds = mail_plugins = " quota notify push_notification imap_quota antispam" } protocol lda { auth_socket_path = /var/run/dovecot/auth-master mail_plugins = quota sieve postmaster_address = postmaster(a)pacapime.ovh } local_name pacapime.be { ssl_cert = </etc/yunohost/certs/pacapime.be/crt.pem ssl_key = # hidden, use -P to show it } local_name auth.pacapime.be { ssl_cert = </etc/yunohost/certs/auth.pacapime.be/crt.pem ssl_key = # hidden, use -P to show it } local_name ftp.pacapime.be { ssl_cert = </etc/yunohost/certs/ftp.pacapime.be/crt.pem ssl_key = # hidden, use -P to show it } local_name www.pacapime.be { ssl_cert = </etc/yunohost/certs/www.pacapime.be/crt.pem ssl_key = # hidden, use -P to show it } local_name adm.pacapime.ovh { ssl_cert = </etc/yunohost/certs/adm.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name coturn.pacapime.ovh { ssl_cert = </etc/yunohost/certs/coturn.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name doc.pacapime.ovh { ssl_cert = </etc/yunohost/certs/doc.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name drive.pacapime.ovh { ssl_cert = </etc/yunohost/certs/drive.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name exc.pacapime.ovh { ssl_cert = </etc/yunohost/certs/exc.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name graph.pacapime.ovh { ssl_cert = </etc/yunohost/certs/graph.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name mail.pacapime.ovh { ssl_cert = </etc/yunohost/certs/mail.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name mattermost.pacapime.ovh { ssl_cert = </etc/yunohost/certs/mattermost.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name paper.pacapime.ovh { ssl_cert = </etc/yunohost/certs/paper.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name pdf.pacapime.ovh { ssl_cert = </etc/yunohost/certs/pdf.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name pictures.pacapime.ovh { ssl_cert = </etc/yunohost/certs/pictures.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name qr.pacapime.ovh { ssl_cert = </etc/yunohost/certs/qr.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name round.pacapime.ovh { ssl_cert = </etc/yunohost/certs/round.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name rust.pacapime.ovh { ssl_cert = </etc/yunohost/certs/rust.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name sql.pacapime.ovh { ssl_cert = </etc/yunohost/certs/sql.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name stat.pacapime.ovh { ssl_cert = </etc/yunohost/certs/stat.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name talk.pacapime.ovh { ssl_cert = </etc/yunohost/certs/talk.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name test.pacapime.ovh { ssl_cert = </etc/yunohost/certs/test.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name tools.pacapime.ovh { ssl_cert = </etc/yunohost/certs/tools.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name video.pacapime.ovh { ssl_cert = </etc/yunohost/certs/video.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name webmin.pacapime.ovh { ssl_cert = </etc/yunohost/certs/webmin.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it } local_name www.pacapime.ovh { ssl_cert = </etc/yunohost/certs/www.pacapime.ovh/crt.pem ssl_key = # hidden, use -P to show it }

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Example configs and packaging scripts
by Aki Tuomi 28 Jan '25

28 Jan '25

Hi! To make the transition from 2.3 to 2.4 easier, especially for package maintainers, we have prepared one-time conversion of 2.3 example configurations to 2.4. Please find them at https://github.com/dovecot/tools/blob/main/dovecot-2.4.0-example-config.tar… Please review release notes and changelogs for needed changes in future releases. Also, would like to remind that https://repo.dovecot.org/ce-2.4-latest/debian/bookworm/pool/main/ contains the debian.tar.xz used to build our packages, and similarly for rhel based https://repo.dovecot.org/ce-2.4-latest/rhel/9/SRPMS/ has the source RPMs. Kind regards, Aki Tuomi

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dovecot: master: Warning: service(imap-login): process_limit (100) reached, client connections are being dropped
by Stephane De Greef 28 Jan '25

28 Jan '25

Hello, I would need a little help. I have the following message in the logs dovecot: master: Warning: service(imap-login): process_limit (100) reached, client connections are being dropped I have already modified the file /etc/dovecot/conf.d/10-master.conf The first 2 lines are default_process_limit = 200 default_client_limit = 1250 and if i make: grep -r process_limit /etc/ he found that: /etc/dovecot/conf.d/10-master.conf:default_process_limit = 200 /etc/dovecot/conf.d/10-master.conf: process_limit = 1024 /etc/dovecot/conf.d/10-master.conf: #process_limit = 1024 /etc/dovecot/conf.d/10-master.conf: process_limit = 1024 /etc/dovecot/conf.d/10-master.conf.original:default_process_limit = 150 /etc/dovecot/conf.d/10-master.conf.original: #process_limit = 1024 /etc/dovecot/conf.d/10-master.conf.original: #process_limit = 1024 /etc/dovecot/conf.d/10-master.conf.original: #process_limit = 1024 /etc/dovecot/conf.d/20-managesieve.conf: #process_limit = 1024 And so I don’t really understand why this error message remains at 100, I specify that the postfix and dovecot services were restarted after the modification,

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doveadm backup and sieve scripts
by Maksim Rodin 28 Jan '25

28 Jan '25

Hello, What is the best way to backup (migrate) sieve rules? I tried: "doveadm backup -u somebox@somedomain maildir:/backup_dir" "doveadm backup -u somebox@somedomain remote:newmailserver.somedomain" Messages are copied but sieve rules are not. dovecot --version: 2.3.21.1 doveconf -n: # 2.3.21.1 (d492236fa0): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.21.1 (49005e73) # OS: OpenBSD 7.5 amd64 # Hostname: mail first_valid_uid = 1000 mail_attachment_dir = /work/vmail/attaches mail_attachment_min_size = 10 k mail_gid = 2000 mail_home = /work/vmail/%n mail_location = sdbox:~/dbox mail_plugins = " zlib acl" mail_uid = 2000 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational r mbox_write_locks = fcntl mmap_disable = yes namespace { list = children location = sdbox:/work/vmail/%%d/%%n/dbox:INDEXPVT=~/dbox/shared/%%u prefix = shared/%%u/ separator = / subscriptions = no type = shared } namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } passdb { driver = bsdauth } passdb { args = /etc/dovecot/dovecot-shared.conf.ext driver = ldap } passdb { args = /etc/dovecot/dovecot-ldap_somedomain.conf.ext driver = ldap } plugin { acl = vfile acl_shared_dict = file:/var/db/dovecot/db/shared-mailboxes.db sieve = file:~/sieve;active=~/.dovecot.sieve zlib_save = lz4 zlib_save_level = 9 } protocols = imap lmtp submission sieve service decode2text { executable = script /usr/local/libexec/dovecot/decode2text.sh unix_listener decode2text { mode = 0666 } user = _dovecot } service lmtp { user = vmail } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } } ssl_cert = </etc/letsencrypt/live/somedomain/fullchain.pem ssl_key = # hidden, use -P to show it submission_relay_host = localhost submission_relay_trusted = yes userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-shared.conf.ext default_fields = uid=vmail gid=vmail home=/work/vmail/%n_%{domain_first} driver = ldap } userdb { args = uid=vmail gid=vmail driver = static } verbose_proctitle = yes protocol lmtp { mail_plugins = " zlib acl sieve" } protocol imap { mail_max_userip_connections = 100 mail_plugins = " zlib acl imap_acl" } protocol submission { mail_max_userip_connections = 100 } -- Best regards Maksim Rodin

1 0

Tests failed in 2.4.0 (Possibly time-zone-related?)
by Peter 27 Jan '25

27 Jan '25

I'm getting the following failed test: test-var-expand.c:464: Assert failed: labs(t0 - t1) < 10 3600 < 10 is not true var_expand(providers) ................................................ : FAILED This test appears to be a timestamp comparison as per this comment: /* Ensure the time is within 10 seconds */ being exactly one hour off makes me suspect a time-zone issue on the build machine. This machine is in NZDT which is currently in daylight savings time which makes me suspect that this is an issue that is specific to dovecot being built in a timezone in the southern hemisphere. Shouldn't the comparison be done on UTC time instead of localtime to avoid these issues? Peter

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2.4 , error with virtual plugin
by Luigi Trovato 26 Jan '25

26 Jan '25

Hello, even with updated config for virtual plugin: mail_plugins { virtual = yes } namespace virtual { prefix = virtual. separator = . mail_driver = virtual mail_path = ~/virtual } I get this error: imap(lonestar(a)lonestar.it)<2991><64ab1o8sDJl/AAAB>: Error: Namespace virtual: Unknown mail storage driver virtual imap(lonestar(a)lonestar.it)<2991><64ab1o8sDJl/AAAB>: Info: Disconnected: Namespace virtual: Unknown mail storage driver virtual in=0 out=442 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0 What could it be? -- Ciao, Luigi

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Errors using dovecot 2.4 container image
by Andreas Achtzehn 26 Jan '25

26 Jan '25

Dear Dovecot team, I ran into troubles using the newly released 2.4 docker image. The dovecot/dovenull users are apparently not part of the image -- hence the dovecot server fails to start up with a fatal error. I'm using a vanilla configuration, default_login_user, etc. are not set. Thanks for having a look! Best regards, Andreas

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Latest docker image broken
by Stephen Benjamin 26 Jan '25

26 Jan '25

I use watchtower to keep my docker images up to date and the image pushed to latest tag yesterday broke everything - I can’t find any docs saying anything about mail_location being removed or replaced…. Any idea? I’m unfortunately away from my laptop for a few days so I can’t do any deep debugging but I’d appreciate any pointer. doveconf: Fatal: Error in configuration file /etc/dovecot/dovecot.conf line 1: mail_location: Unknown setting: mail_location Sent from my iPhone

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Help with migration of Quota config to 2.4.0?
by dovecot.org＠schildbach.de 25 Jan '25

25 Jan '25

I've converted most of my config to 2.4.0, but one thing I don't get from the docs: ``` mail_plugins = $mail_plugins quota protocol imap { mail_plugins = $mail_plugins imap_quota } plugin { quota = maildir:User quota:noenforcing quota_rule = *:storage=7GB quota_rule2 = Trash:storage=+10%% } ``` How would this translate?

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Dovecot 2.4.0 compilation issues (Linux, GCC 8.3.1)
by Andreas M. Kirchwitz 25 Jan '25

25 Jan '25

Hello users of Dovecot! Currently, Dovecot 2.3.21.1 compiles and runs fine on a Red Hat Linux clone with GCC 8.3.1. Now tried the brandnew sources of Dovecot 2.4.0, but to my surprise it doesn't even compile and I have no clue where to begin my debugging. Besides some minor things (new OpenSSL version check not working, maybe because not using proper include files; and one library is missing -lrt to use clock_gettime), I'm totally stuck at compiling the new "src/lib-http/http-server-settings.c". It fails while including "src/lib/macros.h" with the message "error: size of unnamed array is negative" Dovecot 2.3.21.1 has no http-server-settings.c but a very similar macros.h which everbody seems to be happy about. So what is it that happens while compiling http-server-settings.c to make GCC fail? I ran "./configure" with just LDFLAGS="-lrt -Wl,--no-as-needed" added, and then simply "make". Nothing special here. I'm happy with all the default settings and auto-detected options. Full log of compilation messages is appended at the end of this message. Any help is highly appreciated. Currently I have no idea where to even start my search for a workaround or even a solution. Never had such problems with compiling Dovecot so far. Thanks a lot in advance ... Andreas ====================================================================== Compilation messages where the error occurs: ====================================================================== Making all in lib-http make[3]: Entering directory '/usr/local/src/dovecot-2.4.0/src/lib-http' CC http-server-settings.lo In file included from ../../src/lib/lib.h:37, from http-server-settings.c:3: ../../src/lib/lib.h: In function ‘time_to_uint32’: ../../src/lib/lib.h:145:14: warning: comparison of integer expressions of different signedness: ‘time_t’ {aka ‘long int’} and ‘unsigned int’ [-Wsign-compare] i_assert(ts <= UINT32_MAX); ^~ ../../src/lib/macros.h:198:45: note: in definition of macro ‘unlikely’ # define unlikely(expr) (__builtin_expect((expr) ? 1 : 0, 0) != 0) ^~~~ ../../src/lib/lib.h:145:2: note: in expansion of macro ‘i_assert’ i_assert(ts <= UINT32_MAX); ^~~~~~~~ In file included from http-server-settings.c:3: ../../src/lib/lib.h: In function ‘time_to_uint32_trunc’: ../../src/lib/lib.h:153:9: warning: comparison of integer expressions of different signedness: ‘time_t’ {aka ‘long int’} and ‘unsigned int’ [-Wsign-compare] if (ts > UINT32_MAX) ^ In file included from ../../src/lib/lib.h:37, from http-server-settings.c:3: http-server-settings.c: At top level: ../../src/lib/macros.h:173:14: error: size of unnamed array is negative (sizeof(char[1 - 2 * ((condition) ? 1 : 0)]) > 0 ? FALSE : FALSE) ^ ../../src/lib/macros.h:182:2: note: in expansion of macro ‘COMPILE_ERROR_IF_TRUE’ COMPILE_ERROR_IF_TRUE( \ ^~~~~~~~~~~~~~~~~~~~~ ../../src/lib-settings/settings-parser.h:78:27: note: in expansion of macro ‘COMPILE_ERROR_IF_TYPES_NOT_COMPATIBLE’ { .type = (_enum_type) + COMPILE_ERROR_IF_TYPES_NOT_COMPATIBLE( \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../../src/lib-settings/settings-parser.h:125:2: note: in expansion of macro ‘SETTING_DEFINE_STRUCT_TYPE’ SETTING_DEFINE_STRUCT_TYPE(SET_SIZE, SET_FLAG_HIDDEN, uoff_t, key, name, struct_name) ^~~~~~~~~~~~~~~~~~~~~~~~~~ http-server-settings.c:13:2: note: in expansion of macro ‘SETTING_DEFINE_STRUCT_SIZE_HIDDEN’ SETTING_DEFINE_STRUCT_##type("http_server_"#name, name, struct http_server_settings) ^~~~~~~~~~~~~~~~~~~~~~ http-server-settings.c:34:2: note: in expansion of macro ‘DEF’ DEF(SIZE_HIDDEN, socket_send_buffer_size), ^~~ ../../src/lib/macros.h:173:14: error: size of unnamed array is negative (sizeof(char[1 - 2 * ((condition) ? 1 : 0)]) > 0 ? FALSE : FALSE) ^ ../../src/lib/macros.h:182:2: note: in expansion of macro ‘COMPILE_ERROR_IF_TRUE’ COMPILE_ERROR_IF_TRUE( \ ^~~~~~~~~~~~~~~~~~~~~ ../../src/lib-settings/settings-parser.h:78:27: note: in expansion of macro ‘COMPILE_ERROR_IF_TYPES_NOT_COMPATIBLE’ { .type = (_enum_type) + COMPILE_ERROR_IF_TYPES_NOT_COMPATIBLE( \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../../src/lib-settings/settings-parser.h:125:2: note: in expansion of macro ‘SETTING_DEFINE_STRUCT_TYPE’ SETTING_DEFINE_STRUCT_TYPE(SET_SIZE, SET_FLAG_HIDDEN, uoff_t, key, name, struct_name) ^~~~~~~~~~~~~~~~~~~~~~~~~~ http-server-settings.c:13:2: note: in expansion of macro ‘SETTING_DEFINE_STRUCT_SIZE_HIDDEN’ SETTING_DEFINE_STRUCT_##type("http_server_"#name, name, struct http_server_settings) ^~~~~~~~~~~~~~~~~~~~~~ http-server-settings.c:35:2: note: in expansion of macro ‘DEF’ DEF(SIZE_HIDDEN, socket_recv_buffer_size), ^~~ make[3]: *** [Makefile:1007: http-server-settings.lo] Error 1 make[3]: Leaving directory '/usr/local/src/dovecot-2.4.0/src/lib-http' make[2]: *** [Makefile:587: all-recursive] Error 1 make[2]: Leaving directory '/usr/local/src/dovecot-2.4.0/src' make[1]: *** [Makefile:725: all-recursive] Error 1 make[1]: Leaving directory '/usr/local/src/dovecot-2.4.0' make: *** [Makefile:567: all] Error 2

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newbie dsync problems
by Kent Borg 25 Jan '25

25 Jan '25

I have a very basic postfix/dovecot server, with just a few users, and it works. But in the past I have had hardware failures…so I would like use dsync to a nearly matching server for some extra safety, and I have not yet been successful. I am trying to do this as root over ssh, with a private key for authentication. I do not managed to get the whole replicator thing working, so as part of simplifying things I am trying to run dsync manually, just on one user (myself). I hope this isn't a silly approach. What would the manual command look like? The closest example on the man page is: > $ doveadm sync -u username(a)example.com ssh -i id_dsa.dovecot \ > mailuser(a)example.com doveadm dsync-server -u username(a)example.com I try to change that to match my case and it has never heard of me: > root@la:/etc/dovecot# doveadm sync -1 -u kentborg(a)mail.borg.org ssh -i > /root/.ssh/id_rsa_rc.borg.org.dsync kentborg(a)mail.borg.org doveadm > dsync-server -u kentborg(a)mail.borg.org > doveadm(kentborg(a)mail.borg.org): Error: User doesn't exist > root@la:/etc/dovecot# I drop the machine part of the name and it knows who I am on this end but can't get to the other end: > root@la:/etc/dovecot# doveadm sync -1 -u kentborg ssh -i > /root/.ssh/id_rsa_rc.borg.org.dsync kentborg(a)mail.borg.org doveadm > dsync-server -u kent\ > borg(a)mail.borg.org > kentborg(a)mail.borg.org's password: I think I have root's ssh keys set up correctly, I can run this: > root@la:/etc/dovecot# ssh -i /root/.ssh/id_rsa_rc.borg.org.dsync > mail.borg.org > PTY allocation request failed on channel 0 > C-c C-croot@la:/etc/dovecot# …and on the remote end I see some debugging output I put in the remote script, outputting an empty username. Makes sense. If I try to put that in this (incomplete) dsync command: > root@la:/etc/dovecot# doveadm sync -u kentborg -1 ssh -i > /root/.ssh/id_rsa_rc.borg.org.dsync mail.borg.org > Error: Extraneous arguments found: 3 5 > doveadm(kentborg)<1029674><QvOnDPmKkmcqtg8AA8+vgQ>: Error: > read(remote) failed: EOF (version not received) > doveadm(kentborg)<1029674><QvOnDPmKkmcqtg8AA8+vgQ>: Error: Remote > command returned error 64: ssh -i /root/.ssh/id_rsa_rc.borg.org.dsync > mail.borg\ > .org dsync-server > root@la:/etc/dovecot# And the remote end outputs the username as "VERSION dsync 3 5", okay, maybe progress. But when I try to make the command more complete and send a username to the remote end, and now I am no longer talking to the remote end: > root@la:/etc/dovecot# doveadm sync -u kentborg -1 ssh -i > /root/.ssh/id_rsa_rc.borg.org.dsync remoteprefix(a)mail.borg.org > remoteprefix(a)mail.borg.org's password: Suggestions? Thanks, -kb

2 8

TLS Connections Between Dovecot & MariaDB
by duluxoz 25 Jan '25

25 Jan '25

Hi All, I'm using a MariaDB backend to a Dovecot server, with TLS required by the MariaDB server for connections. My sql_dovecot.conf.ext file is using the following connection line: `connect = host=mariadb.example.com dbname=mail_server user=vmail password={REDACTED} ssl_ca=/etc/pki/tls/certs/root_ca.crt`. I can't work out from the doco or Google what else I need in that line, but I suspect it'll be something like: `ssl_cert=/etc/pki/tls/certs/vmail_rsa.pem ssl_key=/etc/pki/tls/certs/vmail_rsa.key`. Could someone please confirm this and let me know the actual extra commands/options - thanks Cheers Dulux-Oz

2 3

Virtual folders in top level hierarchy
by Robert Sanchez 25 Jan '25

25 Jan '25

Hi, I've got a virtual "Flagged" folder but it appears as a subfolder of "virtual" instead of being alongside Inbox, Sent, etc. I've seen some previous messages where this was asked, but they didn't really seem to achieve what I want. My expectation was that calling the defined "virtual.Flagged" folder in the inbox namespace would link it there, but either that is not the expected behavior or I'm doing something wrong. This is my current config: namespace virtual { location = virtual:/etc/dovecot/virtual:INDEX=~/virtual:CONTROL=~/virtual:VOLATILEDIR=~/virtual/ prefix = virtual. separator = . list = yes hidden = no } namespace inbox { # (...) default Drafts, Junk, etc. # If you have a virtual "Flagged" mailbox: mailbox virtual.Flagged { special_use = \Flagged auto = subscribe comment = All my flagged messages } } I've also tried "hidden = yes" and "list = no", but I don't see any differences in the client. This is Dovecot 2.3.21 (47349e2482) on Ubuntu 24.04, btw. Thanks.

1 0

Proper syntax for using `allow_nets` with dovecot passdb sql
by Kevin Farley 24 Jan '25

24 Jan '25

Hi there, I posted this question in ServerFault (https://serverfault.com/questions/1170095/proper-syntax-for-using-allow-net…) but haven't gotten an answer after 10 days so thought I'd try here, I appreciate any help you can offer! I want to allow for two auth methods in dovecot via SQL. First, the traditional route where the password is hashed with |SHA512-CRYPT| and compared to the DB response. Second, where the request is coming from a user already authenticated by a different part of the local system, and the hash itself is passed and compared as |PLAIN|. It works perfectly with the following |auth-sql.conf.ext| and associated sql files... |# Passdb for traditional method passdb { driver = sql args = /etc/dovecot/conf.d/dovecot-sql.conf.ext } # Passdb for hybrid method (direct hash comparison) passdb { driver = sql args = /etc/dovecot/conf.d/dovecot-sql-hybrid.conf.ext } # Userdb prefetch to use attributes from the passdb query userdb { driver = prefetch } # Userdb static as fallback for default attributes userdb { driver = static args = uid=vmail gid=vmail home=/srv/mail/%d/%n } | The problem I'm having is that I want to secure the second hybrid |PLAIN| method so that it can only be used by the local host using the |allow_nets| argument. In the documentation <https://doc.dovecot.org/2.3/configuration_manual/authentication/allow_nets/…> it shows that I should simply add it to the |args| like this... |args = /etc/dovecot/conf.d/dovecot-sql-hybrid.conf.ext allow_nets=local,127.0.0.1/32 | But as soon as I do this, the logs show that it's trying to open the entire string as if the |allow_nets...| argument is part of the path, and fails to find the file. I've tried moving the |allow_nets| argument to the beginning, but that had the same result. What is the correct syntax for using |allow_nets| with |passdb sql|? # 2.3.16 (7e2e900c1a): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.16 (09c29328) # OS: Linux 5.14.0-503.21.1.el9_5.x86_64 x86_64 Rocky Linux release 9.5 (Blue Onyx) xfs Thanks, Kevin.

1 0

doveadm mailbox list permission failure for virtual user
by leo1subscr＠zudiewiener.com 24 Jan '25

24 Jan '25

I'm using Dovecot 2.3.21 (47349e2482) on Ubuntu and have convigured virtual mail users. Everything is working finem but a few doevadm commands fail sudo doveadm mailbox list returns doveadm(root): Error: chdir(/root/) failed: Permission denied (euid=1001(vmail) egid=1001(vmail) missing +x perm: /root, dir owned by 0:0 mode=0700)

3 2

Fwd: Fwd: [OFFLIST] Re: connection refused, no error anywhere
by Marco Fioretti 23 Jan '25

23 Jan '25

Hi Robert, I corrected the service imap-login section of both dovecot.conf AND conf.d/10-master.conf as you suggested, The files in ssl_cert and ssl_key exist and are readable by dovecot. I have even changed for testing the permission of /etc/letsencrypt/live /etc/letsencrypt/archive to 0755 and restarted dovecot. However, the output of ss -tuln | grep 993 is still null. What next? Thanks ---------- Forwarded message --------- Da: Robert Nowotny <rnowotny(a)rotek.at> Date: mar 21 gen 2025 alle ore 23:47 Subject: RE: Fwd: [OFFLIST] Re: connection refused, no error anywhere To: Marco Fioretti <marco.fioretti(a)gmail.com> To resolve the connection refused error when accessing Dovecot on the new server, you need to adjust the Dovecot configuration to enable the appropriate IMAP service ports. 1. Enable IMAPS (Port 993) for Secure Connections: - Modify the `service imap-login` section in your Dovecot configuration (likely in `/etc/dovecot/conf.d/10-master.conf`) to include an `imaps` listener: ```conf service imap-login { inet_listener imap { port = 0 # Disables plain IMAP (port 143) } inet_listener imaps { port = 993 ssl = yes } } ``` - This configuration disables plaintext IMAP on port 143 and enables IMAPS on port 993 with SSL. 2. Ensure SSL Certificates Are Correct: - Verify the paths to your SSL certificate and key in `/etc/dovecot/conf.d/10-ssl.conf`: ```conf ssl_cert = </etc/letsencrypt/live/example.com/fullchain.pem ssl_key = </etc/letsencrypt/live/example.com/privkey.pem ``` - Confirm the files exist and have proper permissions (readable by Dovecot). 3. Restart Dovecot: ```bash sudo systemctl restart dovecot ``` 4. Verify Dovecot is Listening: ```bash sudo ss -tuln | grep 993 ``` - You should see Dovecot listening on port 993. 5. Test the Connection Using SSL: ```bash openssl s_client -connect example.com:993 ``` - This should establish a secure connection to the IMAPS port. Additional Recommendations: - Disable Plaintext IMAP: Keeping `port = 0` for the `imap` listener ensures unencrypted IMAP is disabled, enhancing security. - Firewall Configuration: Confirm UFW allows port 993: ```bash sudo ufw allow 993/tcp ``` By enabling IMAPS on port 993 and ensuring SSL is properly configured, secure email access will be restored. If you must use port 143 (not recommended), set `port = 143` in the `imap` listener and enforce STARTTLS by adding `ssl = required` in your SSL configuration. *Von:* Marco Fioretti via dovecot <dovecot(a)dovecot.org> <dovecot(a)dovecot.org> *Gesendet:* Dienstag, 21. Januar 2025 um 23:22 MEZ *An:* Dovecot <dovecot(a)dovecot.org> <dovecot(a)dovecot.org> *Betreff:* FW: [OFFLIST] Re: connection refused, no error anywhere ---------- Forwarded message --------- Da: Marco Fioretti <marco.fioretti(a)gmail.com> <marco.fioretti(a)gmail.com> Date: mar 21 gen 2025 alle ore 19:33 Subject: Re: [OFFLIST] Re: connection refused, no error anywhere To: Michael Peddemors <michael(a)linuxmagic.com> <michael(a)linuxmagic.com> Hi Michel, I cannot say which NGO it is. What I know is that everything with that configuration was working fine, as far as they know, on the old server. So, any help to change the configuration to make it work with the current version of dovecot on Ubuntu 24.04LTS is very welcome... Il giorno mar 21 gen 2025 alle ore 19:11 Michael Peddemors <michael(a)linuxmagic.com> ha scritto: Which NGO? Don't listen on port 143 any more, make sure to only listen on 587/465/993/995 with TLS/SSL.. NGO's are often targeted.. On 2025-01-21 09:50, Marco Fioretti via dovecot wrote: Greetings, I was just tasked with rebuilding from scratch the mail server of an NGO, on a brand new Ubuntu 24.04 LTS VPS. I have copied the whole dovecot configuration to the new server, and now am stuck because: - dovecot IS running, dovecot service status shows no errors, but: - if I try to connect with mutt from my desktop I get "connection refused" - the ufw firewall does allow imap/imaps connections, and there are no errors in its log - even "telnet localhost 143" fails: Trying ::1... Connection failed: Connection refused Trying 127.0.0.1... telnet: Unable to connect to remote host: Connection refused - I see no related errors in /var/log/mail.log or /var/log/syslog. output of dovecot -n is pasted below, I only changed the actual domain name to "example.com" TIA for any pointer, I really need to get this server back online as soon as possible... Marco # 2.3.21 (47349e2482): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.21 (f6cd4b8e) doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -Pn > dovecot-new.conf doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10-ssl.conf:9: ssl_dh_parameters_length is no longer needed # OS: Linux 6.8.0-51-generic x86_64 Ubuntu 24.04.1 LTS ext4 # Hostname: example.com auth_debug = yes auth_verbose = yes auth_verbose_passwords = plain mail_location = maildir:/var/mail/mymail_storage/base/ mbox_write_locks = fcntl passdb { args = /etc/imap.v_users driver = passwd-file } passdb { driver = pam } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 0 } } ssl_cert = </etc/letsencrypt/live/example.com/fullchain.pem ssl_cipher_list = ALL ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes userdb { args = /etc/imap.v_users driver = passwd-file } userdb { driver = passwd } verbose_ssl = yes _______________________________________________ dovecot mailing list -- dovecot(a)dovecot.org To unsubscribe send an email to dovecot-leave(a)dovecot.org -- "Catch the Magic of Linux..." ------------------------------------------------------------------------ Michael Peddemors, President/CEO LinuxMagic Inc. Visit us at http://www.linuxmagic.com @linuxmagic A Wizard IT Company - For More Info http://www.wizard.ca "LinuxMagic" a Reg. TradeMark of Wizard Tower TechnoServices Ltd. ------------------------------------------------------------------------ 604-682-0300 Beautiful British Columbia, Canada _______________________________________________ dovecot mailing list -- dovecot(a)dovecot.org To unsubscribe send an email to dovecot-leave(a)dovecot.org

6 13

dovecot not listening, but doing passw checks? Was: connection refused, no error anywhere
by Marco Fioretti 22 Jan '25

22 Jan '25

Greetings, I just woke up and went back to try to diagnose the problem I first reported in my other thread, and noticed something weird. After your suggestions, the situation is as follow: 0) FTR, postfix is working, if I open the local mailboxes with mutt running on the server I do see email coming in as expected, from mailing lists and our correspondents 1) output of dovecot -n is below 2) both "ss -tuln | grep 993" and "netstat -tanp" show NO activity /presence on port 993 3) BUT, running "service dovecot status" (see output below, I only changed server and user name) I noticed a failed authentication attempt from SOMEUSER2, happened ~15/20 minutes before I checked, where "SOMEUSER" (without the trailing "2") is an ACTUAL user of the old server, and 200.89.159.59 an IP address I don't know (not my desktop's for sure, and AFAIK no legitimate user is trying to use the server at this time, they know I'm rebuilding it...) Now the question is, OK, that attempt may be some attacker trying to get in, this happens but... HOW is he succeeding to TRY to connect, if dovecot doesn't appear to be listening at all??? And of course, does this help in any way to figure out what is wrong with my configuration? Thanks, Marco ######################################### OUTPUT of dovecot -n (actual domain name changed to example.com) # 2.3.21 (47349e2482): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.21 (f6cd4b8e) doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -Pn > dovecot-new.conf doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10-ssl.conf:9: ssl_dh_parameters_length is no longer needed # OS: Linux 6.8.0-51-generic x86_64 Ubuntu 24.04.1 LTS ext4 # Hostname: nexaima auth_debug = yes auth_verbose = yes auth_verbose_passwords = plain mail_debug = yes mail_location = maildir:/var/mail/mymail_storage/base/ mbox_write_locks = fcntl passdb { args = /etc/imap.v_users driver = passwd-file } passdb { driver = pam } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } } ssl_cert = </etc/letsencrypt/live/example.com/fullchain.pem ssl_cipher_list = ALL ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes userdb { args = /etc/imap.v_users driver = passwd-file } userdb { driver = passwd } verbose_ssl = yes ###################################################### FULL OUTPUT OF "service dovecot status": root@example:/# service dovecot status ● dovecot.service - Dovecot IMAP/POP3 email server Loaded: loaded (/usr/lib/systemd/system/dovecot.service; enabled; preset: enabled) Active: active (running) since Tue 2025-01-21 23:41:45 UTC; 5h 24min ago Docs: man:dovecot(1) https://doc.dovecot.org/ Main PID: 35241 (dovecot) Status: "v2.3.21 (47349e2482) running" Tasks: 5 (limit: 4543) Memory: 3.6M (peak: 5.5M) CPU: 503ms CGroup: /system.slice/dovecot.service ├─35241 /usr/sbin/dovecot -F ├─35242 dovecot/anvil ├─35243 dovecot/log ├─35246 dovecot/config └─35323 dovecot/stats Jan 22 04:49:06 example dovecot[35243]: auth-worker(37492): Debug: conn unix:auth-worker (pid=37491,uid=111): auth-worker<2>: pam(SOMEUSER2,200.89.159.59): #1/1 style=1 > Jan 22 04:49:06 example auth[37492]: pam_unix(dovecot:auth): check pass; user unknown Jan 22 04:49:06 example auth[37492]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=SOMEUSER2 rhost=200.89.159.59 Jan 22 04:49:08 example dovecot[35243]: auth-worker(37492): conn unix:auth-worker (pid=37491,uid=111): auth-worker<2>: pam(SOMEUSER2,200.89.159.59): pam_authenticate() f> Jan 22 04:49:08 example dovecot[35243]: auth-worker(37492): Debug: conn unix:auth-worker (pid=37491,uid=111): auth-worker<2>: pam(SOMEUSER2,200.89.159.59): Finished pass> Jan 22 04:49:08 example dovecot[35243]: auth-worker(37492): Debug: conn unix:auth-worker (pid=37491,uid=111): auth-worker<2>: Finished: password_mismatch Jan 22 04:49:08 example dovecot[35243]: auth: Debug: pam(SOMEUSER2,200.89.159.59): Finished passdb lookup Jan 22 04:49:08 example dovecot[35243]: auth: Debug: auth(SOMEUSER2,200.89.159.59): Auth request finished Jan 22 04:49:10 example dovecot[35243]: auth: Debug: client passdb out: FAIL 2 user=SOMEUSER2 Jan 22 04:50:06 example dovecot[35243]: auth-worker(37492): Debug: conn unix:auth-worker (pid=37491,uid=111): Disconnected: Connection closed (fd=-1) lines 1-27/27 (END)

3 5

Fwd: [OFFLIST] Re: connection refused, no error anywhere
by Marco Fioretti 22 Jan '25

22 Jan '25

---------- Forwarded message --------- Da: Marco Fioretti <marco.fioretti(a)gmail.com> Date: mar 21 gen 2025 alle ore 19:33 Subject: Re: [OFFLIST] Re: connection refused, no error anywhere To: Michael Peddemors <michael(a)linuxmagic.com> Hi Michel, I cannot say which NGO it is. What I know is that everything with that configuration was working fine, as far as they know, on the old server. So, any help to change the configuration to make it work with the current version of dovecot on Ubuntu 24.04LTS is very welcome... Il giorno mar 21 gen 2025 alle ore 19:11 Michael Peddemors < michael(a)linuxmagic.com> ha scritto: > Which NGO? > > Don't listen on port 143 any more, make sure to only listen on > 587/465/993/995 with TLS/SSL.. > > NGO's are often targeted.. > > > > On 2025-01-21 09:50, Marco Fioretti via dovecot wrote: > > Greetings, > > > > I was just tasked with rebuilding from scratch the mail server of an NGO, > > on a brand new Ubuntu 24.04 LTS VPS. > > > > I have copied the whole dovecot configuration to the new server, and now > am > > stuck because: > > > > - dovecot IS running, dovecot service status shows no errors, but: > > > > - if I try to connect with mutt from my desktop I get "connection > refused" > > > > - the ufw firewall does allow imap/imaps connections, and there are no > > errors in its log > > > > - even "telnet localhost 143" fails: > > Trying ::1... > > Connection failed: Connection refused > > Trying 127.0.0.1... > > telnet: Unable to connect to remote host: Connection refused > > > > - I see no related errors in /var/log/mail.log or /var/log/syslog. > > > > > > output of dovecot -n is pasted below, I only changed the actual domain > name > > to "example.com" > > > > TIA for any pointer, I really need to get this server back online as soon > > as possible... > > > > Marco > > > > # 2.3.21 (47349e2482): /etc/dovecot/dovecot.conf > > # Pigeonhole version 0.5.21 (f6cd4b8e) > > doveconf: Warning: NOTE: You can get a new clean config file with: > doveconf > > -Pn > dovecot-new.conf > > doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10-ssl.conf:9: > > ssl_dh_parameters_length is no longer needed > > # OS: Linux 6.8.0-51-generic x86_64 Ubuntu 24.04.1 LTS ext4 > > # Hostname: example.com > > auth_debug = yes > > auth_verbose = yes > > auth_verbose_passwords = plain > > mail_location = maildir:/var/mail/mymail_storage/base/ > > mbox_write_locks = fcntl > > passdb { > > args = /etc/imap.v_users > > driver = passwd-file > > } > > passdb { > > driver = pam > > } > > service auth { > > unix_listener /var/spool/postfix/private/auth { > > group = postfix > > mode = 0660 > > user = postfix > > } > > } > > service imap-login { > > inet_listener imap { > > port = 0 > > } > > } > > ssl_cert = </etc/letsencrypt/live/example.com/fullchain.pem > > ssl_cipher_list = ALL > > ssl_key = # hidden, use -P to show it > > ssl_prefer_server_ciphers = yes > > userdb { > > args = /etc/imap.v_users > > driver = passwd-file > > } > > userdb { > > driver = passwd > > } > > verbose_ssl = yes > > _______________________________________________ > > dovecot mailing list -- dovecot(a)dovecot.org > > To unsubscribe send an email to dovecot-leave(a)dovecot.org > > > -- > "Catch the Magic of Linux..." > ------------------------------------------------------------------------ > Michael Peddemors, President/CEO LinuxMagic Inc. > Visit us at http://www.linuxmagic.com @linuxmagic > A Wizard IT Company - For More Info http://www.wizard.ca > "LinuxMagic" a Reg. TradeMark of Wizard Tower TechnoServices Ltd. > ------------------------------------------------------------------------ > 604-682-0300 Beautiful British Columbia, Canada > >

1 0

Fwd: connection refused, no error anywhere
by Marco Fioretti 22 Jan '25

22 Jan '25

Hi Nick, honestly, I don't know why that port was set to 0, I just inherited the whole server... however, even changing that number to 143 and restarting dovecot makes no difference in the output of netstat I just pasted in another reply.... Il giorno mar 21 gen 2025 alle ore 19:00 Nick Howitt via dovecot < dovecot(a)dovecot.org> ha scritto: > Any reason why the imap-listener port is set to 0 and not 143 or > commented out? > > Have you checked if dovecot is listening on 143? > > > On 21/01/2025 17:50, Marco Fioretti via dovecot wrote: > > Greetings, > > > > I was just tasked with rebuilding from scratch the mail server of an NGO, > > on a brand new Ubuntu 24.04 LTS VPS. > > > > I have copied the whole dovecot configuration to the new server, and now > am > > stuck because: > > > > - dovecot IS running, dovecot service status shows no errors, but: > > > > - if I try to connect with mutt from my desktop I get "connection > refused" > > > > - the ufw firewall does allow imap/imaps connections, and there are no > > errors in its log > > > > - even "telnet localhost 143" fails: > > Trying ::1... > > Connection failed: Connection refused > > Trying 127.0.0.1... > > telnet: Unable to connect to remote host: Connection refused > > > > - I see no related errors in /var/log/mail.log or /var/log/syslog. > > > > > > output of dovecot -n is pasted below, I only changed the actual domain > name > > to "example.com" > > > > TIA for any pointer, I really need to get this server back online as soon > > as possible... > > > > Marco > > > > # 2.3.21 (47349e2482): /etc/dovecot/dovecot.conf > > # Pigeonhole version 0.5.21 (f6cd4b8e) > > doveconf: Warning: NOTE: You can get a new clean config file with: > doveconf > > -Pn > dovecot-new.conf > > doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10-ssl.conf:9: > > ssl_dh_parameters_length is no longer needed > > # OS: Linux 6.8.0-51-generic x86_64 Ubuntu 24.04.1 LTS ext4 > > # Hostname: example.com > > auth_debug = yes > > auth_verbose = yes > > auth_verbose_passwords = plain > > mail_location = maildir:/var/mail/mymail_storage/base/ > > mbox_write_locks = fcntl > > passdb { > > args = /etc/imap.v_users > > driver = passwd-file > > } > > passdb { > > driver = pam > > } > > service auth { > > unix_listener /var/spool/postfix/private/auth { > > group = postfix > > mode = 0660 > > user = postfix > > } > > } > > service imap-login { > > inet_listener imap { > > port = 0 > > } > > } > > ssl_cert = </etc/letsencrypt/live/example.com/fullchain.pem > > ssl_cipher_list = ALL > > ssl_key = # hidden, use -P to show it > > ssl_prefer_server_ciphers = yes > > userdb { > > args = /etc/imap.v_users > > driver = passwd-file > > } > > userdb { > > driver = passwd > > } > > verbose_ssl = yes > > _______________________________________________ > > dovecot mailing list --dovecot(a)dovecot.org > > To unsubscribe send an email todovecot-leave(a)dovecot.org > _______________________________________________ > dovecot mailing list -- dovecot(a)dovecot.org > To unsubscribe send an email to dovecot-leave(a)dovecot.org >

1 0

Fwd: connection refused, no error anywhere
by Marco Fioretti 22 Jan '25

22 Jan '25

---------- Forwarded message --------- Da: Marco Fioretti <marco.fioretti(a)gmail.com> Date: mar 21 gen 2025 alle ore 19:27 Subject: Re: connection refused, no error anywhere To: Marc <Marc(a)f1-outsourcing.eu> Hi Marc, this is the output of netstat -tanp (I only removed the line showing the details of my ssh connection): Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 516/systemd-resolve tcp 0 0 127.0.0.54:53 0.0.0.0:* LISTEN 516/systemd-resolve tcp 0 0 127.0.0.1:10023 0.0.0.0:* LISTEN 28575/postgrey --in tcp6 0 0 :::80 :::* LISTEN 26990/apache2 tcp6 0 0 ::1:10023 :::* LISTEN 28575/postgrey --in and indeed it there is no tracce of dovecot there, but what should I do then? "service dovecot status" says the service IS active... Thanks! Il giorno mar 21 gen 2025 alle ore 19:00 Marc <Marc(a)f1-outsourcing.eu> ha scritto: > You are sure dovecot is running on the ports (netstat -tanp). You are sure > this firewall is ok? Maybe flush it, just to be sure. > > > Greetings, > > > > I was just tasked with rebuilding from scratch the mail server of an > > NGO, > > on a brand new Ubuntu 24.04 LTS VPS. > > > > I have copied the whole dovecot configuration to the new server, and now > > am > > stuck because: > > > > - dovecot IS running, dovecot service status shows no errors, but: > > > > - if I try to connect with mutt from my desktop I get "connection > > refused" > > > > - the ufw firewall does allow imap/imaps connections, and there are no > > errors in its log > > > > - even "telnet localhost 143" fails: > > Trying ::1... > > Connection failed: Connection refused > > Trying 127.0.0.1... > > telnet: Unable to connect to remote host: Connection refused > > > > - I see no related errors in /var/log/mail.log or /var/log/syslog. > > > > > > output of dovecot -n is pasted below, I only changed the actual domain > > name > > to "example.com" > > > > TIA for any pointer, I really need to get this server back online as > > soon > > as possible... > > > > Marco > > > > # 2.3.21 (47349e2482): /etc/dovecot/dovecot.conf > > # Pigeonhole version 0.5.21 (f6cd4b8e) > > doveconf: Warning: NOTE: You can get a new clean config file with: > > doveconf > > -Pn > dovecot-new.conf > > doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10- > > ssl.conf:9: > > ssl_dh_parameters_length is no longer needed > > # OS: Linux 6.8.0-51-generic x86_64 Ubuntu 24.04.1 LTS ext4 > > # Hostname: example.com > > auth_debug = yes > > auth_verbose = yes > > auth_verbose_passwords = plain > > mail_location = maildir:/var/mail/mymail_storage/base/ > > mbox_write_locks = fcntl > > passdb { > > args = /etc/imap.v_users > > driver = passwd-file > > } > > passdb { > > driver = pam > > } > > service auth { > > unix_listener /var/spool/postfix/private/auth { > > group = postfix > > mode = 0660 > > user = postfix > > } > > } > > service imap-login { > > inet_listener imap { > > port = 0 > > } > > } > > ssl_cert = </etc/letsencrypt/live/example.com/fullchain.pem > > ssl_cipher_list = ALL > > ssl_key = # hidden, use -P to show it > > ssl_prefer_server_ciphers = yes > > userdb { > > args = /etc/imap.v_users > > driver = passwd-file > > } > > userdb { > > driver = passwd > > } > > verbose_ssl = yes >

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connection refused, no error anywhere
by Marco Fioretti 21 Jan '25

21 Jan '25

Greetings, I was just tasked with rebuilding from scratch the mail server of an NGO, on a brand new Ubuntu 24.04 LTS VPS. I have copied the whole dovecot configuration to the new server, and now am stuck because: - dovecot IS running, dovecot service status shows no errors, but: - if I try to connect with mutt from my desktop I get "connection refused" - the ufw firewall does allow imap/imaps connections, and there are no errors in its log - even "telnet localhost 143" fails: Trying ::1... Connection failed: Connection refused Trying 127.0.0.1... telnet: Unable to connect to remote host: Connection refused - I see no related errors in /var/log/mail.log or /var/log/syslog. output of dovecot -n is pasted below, I only changed the actual domain name to "example.com" TIA for any pointer, I really need to get this server back online as soon as possible... Marco # 2.3.21 (47349e2482): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.21 (f6cd4b8e) doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -Pn > dovecot-new.conf doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10-ssl.conf:9: ssl_dh_parameters_length is no longer needed # OS: Linux 6.8.0-51-generic x86_64 Ubuntu 24.04.1 LTS ext4 # Hostname: example.com auth_debug = yes auth_verbose = yes auth_verbose_passwords = plain mail_location = maildir:/var/mail/mymail_storage/base/ mbox_write_locks = fcntl passdb { args = /etc/imap.v_users driver = passwd-file } passdb { driver = pam } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 0 } } ssl_cert = </etc/letsencrypt/live/example.com/fullchain.pem ssl_cipher_list = ALL ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes userdb { args = /etc/imap.v_users driver = passwd-file } userdb { driver = passwd } verbose_ssl = yes

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Mail with single \r, partial fetch, error "Broken virtual size in mailbox"
by Ewald Dieterich 17 Jan '25

17 Jan '25

I run Dovecot 2.3.21 with the mdbox mailbox format. If I do a certain partial fetch on a mail with a single carriage return \r Dovecot closes the connection and logs the following error: Error: Mailbox INBOX: Deleting corrupted cache record uid=1: UID 1: Broken virtual size in mailbox INBOX: read(/var/spool/dovecot/user/storage/m.1): FETCH BODY[]<18.100> got too little data: 5 vs 6 This happens every time, doveadm force-resync doesn't help. Here's how to reproduce the issue: Deliver a mail with a single carriage return \r (here after the header/body separator, but that's not important): echo -ne "Subject: Test\r\n\r\n\rBody\r\n" | doveadm save -u user Then do a partial fetch from a specific offset: . fetch 1 body[]<18.100> * 1 FETCH (BODY[]<18> {6} ody Connection closed by foreign host. Offset 18 with length 6 should "Body\r\n", that's why the response is 1 byte short ("got too little data: 5 vs 6" in the error message), by why is \r causing this? Other offsets seem to work.

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find mailbox (path) of message
by Marc 13 Jan '25

13 Jan '25

How should I use 'doveadm search -u' to get the mailbox path where the message is stored?

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