- dovecot - dovecot.org

Fwd: maintainer-feedback requested: [Bug 280929] mail/dovecot move bogus warning "Time moved forwards" to debug
by Larry Rosenman 01 Sep '24

01 Sep '24

Comments from the dovecot community? Aug 19, 2024 11:07:30 AM bugzilla-noreply(a)freebsd.org: Bugzilla Automation <bugzilla(a)FreeBSD.org> has asked Larry Rosenman <ler(a)FreeBSD.org> for maintainer-feedback: Bug 280929: mail/dovecot move bogus warning "Time moved forwards" to debug https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280929 --- Description --- Dovecot complains about time moving forward, which seems to be due to a broken mechanism (on FreeBSD) used to measure timeouts. This warning spams the maillog up to several hundred times per day. There's an ongoing thread about this issue in the freebsd forums: https://forums.freebsd.org/threads/dovecot-time-moved-forwards.82886 In post #33 RypPn points out the offending line in main.c and in post #34 msplsh suggests instead of completely removing/commenting out the line, it would be more sensible to move it from 'warning' to 'debug'. This is what this patch does: change the log facility to 'debug' to mute that bogus message for standard configurations, but keep it in 'debug' for anyone who might want to debug that issue in the future. I tested the patch as a local patch in poudriere and it builds fine on 13.3-RELEASE with the quarterly and latest branch.

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Debug: open(/proc/self/io) failed: Permission denied
by Alex 31 Aug '24

31 Aug '24

Hi, I've seen a few emails over the years related to this error message, but they are typically associated with doveadm. In my case, it's related to dovecot itself. I've just set up dovecot-2.3.20-1.fc37.x86_64 on fedora37 and unable to receive mail. The main config was copied over from another dovecot system on fedora37 with virtually identical settings, including the same SSL cert. I've also tried to just migrate the important stuff and otherwise leave the defaults, but I'm having the same problem. imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Loading modules from directory: /usr/lib64/dovecot imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Module loaded: /usr/lib64/dovecot/lib20_listescape_plugin.so imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Effective uid=1001, gid=1001, home=/home/bcc-user imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: open(/proc/self/io) failed: Permission denied imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=mbox:~/mail:INBOX=/var/spool/mail/bcc-user imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: fs: root=/home/bcc-user/mail, index=, indexpvt=, control=, inbox=/var/spool/mail/bcc-user, alt= imap(bcc-user)<2977522><rappeBf6vLZEw8Eq>: Debug: Mailbox Trash: Mailbox opened I've set the /var/spool/mail/bcc-user permissions to 600, bcc-user:mail. The /home/bcc-user directory is 611, bcc-user:bcc-user. Here is my doveconf -n: # 2.3.20 (80a5ac675d): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.20 (149edcf2) # OS: Linux 6.1.15-200.fc37.x86_64 x86_64 Fedora release 37 (Thirty Seven) auth_debug = yes auth_verbose = yes mail_debug = yes mail_gid = mail mail_home = mail/ mail_location = mbox:~/mail:INBOX=/var/spool/mail/%u mail_max_userip_connections = 500 mail_plugins = " listescape" mail_privileged_group = mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext mbox_write_locks = fcntl 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 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 } process_min_avail = 6 service_count = 0 vsz_limit = 512 M } ssl_cert = </etc/letsencrypt/fullchain.cer ssl_cipher_list = ALL:!LOW:!EXP:!aNULL:!RC4::!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes userdb { driver = passwd } verbose_ssl = yes Any ideas greatly appreciated. I was very surprised to be having problems after having done this so many times before.

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Connection closed (user disabled)
by Roberto J. Bolivar Plenge 28 Aug '24

28 Aug '24

Hello everyone Thank you in advance for your help. Why do I get the following error: Aug 23 10:37:51 cp-cl02 dovecot[2337577]: pop3-login: Disconnected: Connection closed (user disabled): user=<loliva(a)romaseguro.pe>, method=PLAIN, rip=x.x.x.x, lip=x.x.x.x, TLS: Connection closed, session=<8na4jlsg3HK1Q1LE>. I never observed this before: Connection closed (user disabled): I wish to know what is causing it and how can I fix it. Thank you.

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Dovecot with LDAP and Solr: Force Solr user key
by Michele Giacomoli 27 Aug '24

27 Aug '24

Good morning everyone. I am configuring dovecot with ldap and solr as fts plugins. The LDAP configuration works correctly and users can log in both via the userPrincipalName attribute and via mail. In this configuration the LDAP realm and the email domain differ, and on the server the LDAP realm domain is privileged. This means that the mail dir is located in ./ldap_realm/username and in the same way postfix delivers the emails to dovecot using username@ldap_realm as envelope recipient. Consequently the emails are indexed on solr using "username@ldap_realm" as user key. However if I log in in imap using the email address as username and try to do some searches dovecot sends a select to solr using the email address as key and not the ldap user, and consequently I do not get any results from the search. So my question is: is it possible to configure dovecot to force queries to solr so that "username@ldap_realm" is always used as the key even when logging in via email? Dovecot version is: 2.3.7.2 Solr version: 7.2.1 Ldap configuration: [...] user_filter = (&(|(userPrincipalName=%u)(mail=%u))(objectClass=person)(!(userAccountControl=514))(memberOf=cn=Mail,ou=Groups,dc=example,dc=org)) pass_filter = (&(|(userPrincipalName=%u)(mail=%u))(objectClass=person)(!(userAccountControl=514))(memberOf=cn=Mail,ou=Groups,dc=example,dc=org)) pass_attrs = userPassword=password user_attrs = =home=/data/mail/%Ld/%Ln/Maildir/,=mail=maildir:/data/mail/%Ld/%Ln/Maildir/ Solr configuration: plugin { fts = solr fts_solr = url=http://solr_host:8983/solr/dovecot/ fts_autoindex=yes } Best regards -- Logo Mynet *Michele Giacomoli* Reparto IT 32.000 km di fibra ottica nel nord Italia al servizio delle aziende *www.mynet.it* <https://www.mynet.it/> - *www.vogliadifibra.it* <https://www.vogliadifibra.it/>

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2.3.21(.1) build error on aarch64 (using slackware ARM -current)
by shawn.kubik＠shaw.ca 22 Aug '24

22 Aug '24

I've spent the last week trying to rebuild Dovecot on my Raspberry Pi 3 (aarch64; running Slackware ARM -current) and am running into the following build error. I suspected it may be my recent update to Slackware but I've been able to build the same source tarball on an x86 system running slackware64-current without any problems, so it *seems* specific to aarch64. I've tried both building from the 2.3.21 (and 2.3.21.1) tarball(s) as well as pulling the latest code from github and they all fail similarly, though in different spots it appears. I am building from source instead of using the available Slackware packages bc those packages don't have support for postgresql built in, but has mysql/mariadb support, which I am not using and is not installed on my systems. While it does run, when I try to connect to it, it fails citing a missing mariadb.so file. gcc -v output: Reading specs from /usr/lib64/gcc/aarch64-slackware-linux-gnu/14.2.0/specs COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/aarch64-slackware-linux-gnu/14.2.0/lto-wrapper Target: aarch64-slackware-linux-gnu Configured with: ../configure --with-arch=armv8-a --verbose --prefix=/usr --mandir=/usr/man --infodir=/usr/info --libdir=/usr/lib64 --enable-bootstrap --enable-checking=release --enable-libstdcxx-dual-abi --enable-shared --enable-languages=ada,c,c++,d,fortran,go,lto,m2,objc,obj-c++,rust --enable-objc-gc --enable-threads=posix --enable-__cxa_atexit --enable-gnu-unique-object --enable-clocale=gnu --enable-plugin --enable-lto --with-arch-directory= --with-system-zlib --with-gnu-ld --with-isl --with-default-libstdcxx-abi=new --disable-libunwind-exceptions --disable-libstdcxx-pch --disable-libssp --disable-werror --disable-gtktest --disable-install-libiberty --host=aarch64-slackware-linux-gnu --build=aarch64-slackware-linux-gnu --target=aarch64-slackware-linux-gnu Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 14.2.0 (GCC) ldd --version output: ldd (GNU libc) 2.40 Copyright (C) 2024 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Written by Roland McGrath and Ulrich Drepper. Configure is: ./configure \ --with-pgsql \ --localstatedir=/var \ --with-lucene \ --with-libcap \ --with-inotify=inotify \ --disable-static \ --build=$ARCH-slackware-linux || exit 1 And the output at the point of failure is: libtool: compile: gcc -DHAVE_CONFIG_H -I. -I../../../.. -I../../../../src/lib -I../../../../src/lib-test -I../../../../src/lib-settings -I../../../../src/lib-mail -I../../../../src/lib-imap -I../../../../src/lib-imap-client -I../../../../src/lib-index -I../../../../src/lib-storage -I../../../../src/lib-storage/list -I../../../../src/lib-storage/index -I../../../../src/lib-ssl-iostream -std=gnu99 -g -O2 -fstack-protector-strong -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno-builtin-strftime -Wstrict-aliasing=2 -MT imapc-sync.lo -MD -MP -MF .deps/imapc-sync.Tpo -c imapc-sync.c -fPIC -DPIC -o .libs/imapc-sync.o free(): double free detected in tcache 2 during GIMPLE pass: slp imapc-sync.c: In function ‘imapc_initial_sync_check’: imapc-sync.c:294:1: internal compiler error: Aborted 294 | imapc_initial_sync_check(struct imapc_sync_context *ctx, bool nooped) | ^~~~~~~~~~~~~~~~~~~~~~~~ 0x1b4a3df internal_error(char const*, ...) ???:0 0x7f80a139fc pthread_kill@@GLIBC_2.34 ???:0 0x7f809c419b gsignal ???:0 0x7f809abfa7 abort ???:0 0x7f80a06943 __libc_message_impl ???:0 0x7f80a1e2c7 malloc_printerr ???:0 0x7f80a2053b _int_free ???:0 0x7f80a22b7f __free ???:0 0xfa35d7 _slp_tree::~_slp_tree() ???:0 0xfa3aa7 vect_free_slp_instance(_slp_instance*) ???:0 0xfb9a7f vect_slp_analyze_operations(vec_info*) ???:0 0xfc06a7 vect_slp_function(function*) ???:0 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. make[5]: *** [Makefile:597: imapc-sync.lo] Error 1 make[5]: Leaving directory '/data/local/src/Dovecot/dovecot-2.3.21/src/lib-storage/index/imapc' make[4]: *** [Makefile:733: all-recursive] Error 1 make[4]: Leaving directory '/data/local/src/Dovecot/dovecot-2.3.21/src/lib-storage/index' make[3]: *** [Makefile:1107: all-recursive] Error 1 make[3]: Leaving directory '/data/local/src/Dovecot/dovecot-2.3.21/src/lib-storage' make[2]: *** [Makefile:573: all-recursive] Error 1 make[2]: Leaving directory '/data/local/src/Dovecot/dovecot-2.3.21/src' make[1]: *** [Makefile:704: all-recursive] Error 1 make[1]: Leaving directory '/data/local/src/Dovecot/dovecot-2.3.21' make: *** [Makefile:548: all] Error 2 Can someone please help me figure this out? If more output is required let me know and I can provide it. Thank You!

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limits to auth of submission
by horizon＠secubox.org 21 Aug '24

21 Aug '24

Hello I am using a plaintext db as the auth db. The db content is like this line: user@mail.com:{CRYPT}$****::::::userdb_quota_rule=*:bytes=1G How can I limit some people can auth with postfix submission (port 587), and some others can't? Thank you.

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Seeking Suggestions for Optimizing Dovecot Performance
by leoniemeeyr＠gmail.com 21 Aug '24

21 Aug '24

Hi everyone, I hope you’re all doing well! I’ve been working with Dovecot for a while now and I’m looking to optimize its performance on my server. I’d love to hear any tips or suggestions you might have to help me get the best performance out of it. Specifically, I’m interested in: 1. Configuration Tweaks: Any key settings that you’ve found to be particularly beneficial for performance? 2. Best Practices: Are there any common practices or tools that help in monitoring and improving performance? 3. Resource Management: How do you handle resource allocation to ensure smooth operation under heavy loads? Any advice or experiences you can share would be greatly appreciated! Thanks in advance for your help. Best Regards https://www.igmguru.com/blog/msbi-vs-power-bi

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2.3.21.1 and oauth
by v＠minakov.pro 21 Aug '24

21 Aug '24

Hello! I'm using dovecot with keycloak for oauth authentication. My config is: client_id = dovecot client_secret = MY_SECRET introspection_url = https://MY_KEYCLOAK/realms/master/protocol/openid-connect/token/introspect introspection_mode = post pass_attrs = pass=%{oauth2:access_token} Everything worked great on version 2.3.20. After upgrading to version 2.3.21.1 oauth stopped working with errors: auth: Debug: http-client: conn [::1]:443 [1]: Got 401 response for request [Req1: POST https://MY_KEYCLOAK/realms/master/protocol/openid-connect/token/introspect] Unauthorized (took 5 ms + >Aug 16 00:23:58 auth: Error: oauth2(MY_EMAIL,127.0.0.1,<HADwdb8f+PN/AAAB>): oauth2 failed: Introspection failed: No username returned I tried all combination of configurations, debugging and versions of keycloak. Seems something was broken in this version of dovecot.

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dovecot-indexer writting as root
by Joan Moreau 20 Aug '24

20 Aug '24

Hi I have that issue times to times Full case described properly here : https://github.com/grosjo/fts-xapian/issues/168 Can you help understand the root cause of that ? THank you

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SQL Multiple passwords
by Aubry 19 Aug '24

19 Aug '24

Hi, From what I understood from the archive and from my tests, we cannot have multiple passwords for a given account. (I get the error: Password query returned multiple matches) But it looks like it can be done via a PAM module. Does anyone succeeded setup multiple password with PAM or any other method with a SQL backend ? Regards, Aubry

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