- 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.

3 5

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.

2 4

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/>

1 1

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!

2 2

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.

1 0

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

1 0

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

3 6

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

6 7

Re: Frequency Control for IMAP connection
by Joseph Tam 16 Aug '24

16 Aug '24

From: Corey H <coreyh(a)alwaysdata.net> > $ sudo tail -10000 /var/log/mail.log|grep **(a)**mail.com|wc -l > 3544 > > logs like this: > > Aug 15 19:54:10 mx dovecot: imap-login: Login: user=<**(a)**mail.com>, > method=PLAIN, rip=**, lip=**, mpid=4151830, TLS, > session=<UPotgLcfTOjYUzTN> > > How can I implement a Frequency Control on client connections to slow > down his requests? Is this a MacOSX client? I think they have a habit of doing this when doing global mailbox searches. Instead of doing a sane serial march through mailboxes, it opens up as many mailboxes as it can, then closes them when the IMAP server denies then when they hit the max. If Aki doesn't can't offer a solution, neither can I, but maybe you can play around with mail_max_userip_connections to stop them from swamping all your connections. You might have to resort to firewall or other general network controls to actually rate limit connections. Joseph Tam <jtam.home(a)gmail.com>

2 1

dovecot-2.3.2.1 and dovecot-pigeonhole-0.5.2 bug?
by Jan Nowak 16 Aug '24

16 Aug '24

Hello, we have a problem after updating the software with the operation of sieve scripts sending a copy of the e-mails, e-mails are not transferred. Configuration: dovecot-2.3.2.1 + dovecot-pigeonhole-0.5.2 + FreeBSD 11.2 log: Sep 06 13:28:17 lda(XXX@XXX)<38615><XXX+XXX>: Info: sieve: msgid=<XXX-XXX-XXX-7788-XXX@XXXXnet>: stored mail into mailbox 'INBOX' Sep 06 13:28:17 lda(XXX@XXX)<38615><XXX+XXX>: Info: sieve: Execution of script /usr/home/XXX/mail/XXX(a)XXX/.dovecot.sieve failed, but implicit keep was successful (user logfile /usr/home/XXX/mail/XXX(a)XXX/.dovecot.sieve.log may reveal additional details) .dovecot.sieve.log: error: msgid=<XXX-XXX-XXX-7788-XXX@XXXXnet>: failed to redirect message to <XXXXX(a)XXXXXX.com>: smtp(127.0.0.1:25): DATA failed: 552 Message header not CRLF terminated (permanent failure). On old configuration: dovecot 2.2 + dovecot-pigeonhole- 0.4 + FreeBSD 11.2 we don't have problem. Has anyone had a similar problem, knows the solution?

5 12

The future of SIS
by Sebastian Marsching 16 Aug '24

16 Aug '24

Hi, I am currently in the process of planning a new deployment of Dovecot. I was planning to use mdbox or sdbox with “mail_attachment_fs = sis posix”, but I stumbled across the following notice in the documentation for Dovecot 3.0 (https://doc.dovecot.org/3.0/settings/core/#core_setting-mail_attachment_fs) > Changed in version 2.4.0 (CE): SIS is deprecated and writing of SIS files is disabled. Reading is supported for now, any missing SIS attachments are replaced with files filled with spaces. > > Changed in version 3.0.0 (Pro): SIS is deprecated and writing of SIS files is disabled. Reading is supported for now, any missing SIS attachments are replaced with files filled with spaces. And https://doc.dovecot.org/3.0/installation_guide/upgrading/from-2.3-to-3.0/ says: > Saving new mails’ attachments via fs-sis is disabled, but reading SIS attachments is still supported. Missing SIS attachments are replaced with files filled with spaces. What is not entirely clear from this comment is whether this only applied to “sis posix” or also to “sis-queue posix”. Does anybody whether sis-queue is also affected by this? I saw that the notice was added to the dovecot/documentation Git repository in April 2023, but I couldn’t find any further information there or the main branch of the dovecot/core repository. Maybe, the code for 2.4 / 3.0 has not made it into that branch or repository yet. SIS sounds like a neat concept and I would like to use it, but obviously I do not want to use a soon-to-be-deprecated feature in a completely new deployment. So, does anybody know an alternative solution for attachment deduplication (except file-system level deduplication)? Thanks, Sebastian

19 43

vacation is not using from in envelope
by Marc 16 Aug '24

16 Aug '24

How to get dovecot use the from in sieve in the envelope?

3 5

Frequency Control for IMAP connection
by Corey H 15 Aug '24

15 Aug '24

Hello one of our users makes too quick IMAP connections to the server. $ sudo tail -10000 /var/log/mail.log|grep **(a)**mail.com|wc -l 3544 logs like this: Aug 15 19:54:10 mx dovecot: imap-login: Login: user=<**(a)**mail.com>, method=PLAIN, rip=**, lip=**, mpid=4151830, TLS, session=<UPotgLcfTOjYUzTN> How can I implement a Frequency Control on client connections to slow down his requests? Thank you.

2 1

2.3.21.1 build failure on MacOS X 14.6.1
by Daniel J. Luke 15 Aug '24

15 Aug '24

Hi - I get a build failure from dbox-storage.c because the stat struct doesn't have st_atim/st_ctim This simple patch fixes it (and should also work on linux/glibc hosts, but I haven't tested it there). --- src/lib-storage/index/dbox-common/dbox-storage.c.orig 2024-08-14 14:59:57 +++ src/lib-storage/index/dbox-common/dbox-storage.c 2024-08-14 15:01:23 @@ -293,8 +293,8 @@ if the directory exists. In case, get also the ctime */ struct stat stats; if (stat(path, &stats) == 0) { - last_temp_file_scan = stats.st_atim.tv_sec; - change_time = stats.st_ctim.tv_sec; + last_temp_file_scan = stats.st_atime; + change_time = stats.st_ctime; } else { if (errno != ENOENT) e_error(user->event, "stat(%s) failed: %m", path); -- Daniel J. Luke

2 1

v2.3.21 compile error
by Goetz Schultz 14 Aug '24

14 Aug '24

Hi, I am trying to compile said version above under FreeBSD 14.1 . Config setting is: ./configure --with-pgsql --with-sql However, during compile the process halts with below errors: <quote> test-mail-index-transaction-update.c:648:17: error: incompatible pointer to integer conversion assigning to 'uint32_t' (aka 'unsigned int') from 'char *(*)(int, int)' [-Wint-conversion] 648 | hdr.day_stamp = tests[i].old_day_stamp + timezone; | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ test-mail-index-transaction-update.c:650:49: warning: arithmetic on a pointer to the function type 'char *(int, int)' is a GNU extension [-Wgnu-pointer-arith] 650 | mail_index_update_day_headers(t, tests[i].now + timezone); | ^ ~~~~~~~~ test-mail-index-transaction-update.c:650:36: error: incompatible pointer to integer conversion passing 'char *(*)(int, int)' to parameter of type 'time_t' (aka 'long') [-Wint-conversion] 650 | mail_index_update_day_headers(t, tests[i].now + timezone); | ^~~~~~~~~~~~~~~~~~~~~~~ </quote> Other info: gcc -v FreeBSD clang version 18.1.5 (https://github.com/llvm/llvm-project.git llvmorg-18.1.5-0-g617a15a9eac9) Target: x86_64-unknown-freebsd14.1 Thread model: posix InstalledDir: /usr/bin Any clue or pointer (no pun intended) what's going wrong and how to fix it? -- Thanks and regards Goetz R Schultz Quis custodiet ipsos custodes? ---------------------------->8------------------------------ /"\ \ / ASCII Ribbon Campaign X against HTML e-mail / \ ---------------------------->8------------------------------ ---------------------------->8------------------------------ /"\ \ / ASCII Ribbon Campaign X against HTML e-mail / \ This message is transmitted on 100% recycled electrons. ---------------------------->8------------------------------ Unsigned message - no responsibillity that content is not altered

3 5

[bug?] doveadm -f json who output
by Jasper Spaans 14 Aug '24

14 Aug '24

Hi, I'm trying to parse the output of `doveadm -f json who`[0] and am running into a small issue when it returns data about multiple users: the stream that is emitted in that case is not valid json. dovecot -version tells me dovecot 2.3.21 (47349e2482), more specifically, this is the version shipped in ubuntu 24.04, 1:2.3.21+dfsg1-2ubuntu5 doveadm -f json who [{"username":"<REDACTED>","connections":"4","service":"imap","pids":"(272307 270876 270872 270869)","ips":"(2001:<REDACTED>:7488)"}],{"username":"<REDACTED>","connections":"2","service":"imap","pids":"(271469 271465)","ips":"(2a02:<REDACTED>:9c28)"} When trying to pretty print this with jq, it complains about invalid json: doveadm -f json who|jq [ { "username": "<REDACTED>", "connections": "4", "service": "imap", "pids": "(272307 270876 270872 270869)", "ips": "(2001:<REDACTED>0:7488)" } ] jq: parse error: Expected value before ',' at line 1, column 167 Is this expected behaviour? I would have expected a list of user objects, and then it seems like the list-closing bracket that is currently at the end of the first user object should have been at the end of the last user object. I can code around this in my parser, but would rather not. Best, Jasper [0] actually I'm parsing the output of the doveadm http api, but that just seems to copy the data from the json format in there verbatim

2 1

Dovecot refuses to install/run on machine without IPv6
by Kurt Fitzner 14 Aug '24

14 Aug '24

Hi, I just tried to install Dovecot (version 2.3.19.1 9b53102964) on a Debian 12 server I'm building. It failed because Dovecot's default listen address is explicitly "*, ::" and it appears to have no logic to determine if there actually is an IPv6-enabled interface or that IPv6 is enabled on the target machine before it tries to listen on it. If dovecot wants to listen on IPv6 by default, that's neither here nor there, but if this is default behaviour it should check first. I'm curious if it's the same behaviour for machines without IPv4. Kurt Fitzner

5 5

CVE-2024-23184: Having a large number of address headers (From, To, Cc, Bcc, etc.) becomes excessively CPU intensive
by Aki Tuomi 14 Aug '24

14 Aug '24

Affected product: Dovecot IMAP Server Internal reference: DOV-6464 Vulnerability type: CWE-770 (Allocation of Resources Without Limits or Throttling) Vulnerable version: 2.2, 2.3 Vulnerable component: lib-mail Report confidence: Confirmed Solution status: Fixed in 2.3.21.1 Researcher credits: Vendor internal discovery Vendor notification: 2024-01-30 CVE reference: CVE-2024-23184 CVSS: 5.0 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N) Vulnerability Details: Having a large number of address headers (From, To, Cc, Bcc, etc.) becomes excessively CPU intensive. With 100k header lines CPU usage is already 12 seconds, and in a production environment we observed 500k header lines taking 18 minutes to parse. Since this can be triggered by external actors sending emails to a victim, this is a security issue. The main problem is that each header line's address is added to the end of a linked list. This is done by walking the whole linked list, which becomes more inefficient the more addresses there are. Workaround: One can implement restrictions on address headers on MTA component preceding Dovecot. Fix: Install non-vulnerable version of Dovecot. Patch can be found at https://github.com/dovecot/core/compare/8e4c42d%5E...1481c04.patch

2 1

Dovecot CVE-2024-23185: Very large headers can cause resource exhaustion when parsing message
by Aki Tuomi 14 Aug '24

14 Aug '24

Affected product: Dovecot IMAP Server Internal reference: DOV-6601 Vulnerability type: CWE-770 (Allocation of Resources Without Limits or Throttling) Vulnerable version: 2.2, 2.3 Vulnerable component: lib-mail Report confidence: Confirmed Solution status: Fixed in 2.3.21.1 Researcher credits: Vendor internal discovery Vendor notification: 2024-01-31 CVE reference: CVE-2024-23185 CVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) Vulnerability Details: Very large headers can cause resource exhaustion when parsing message. The message-parser normally reads reasonably sized chunks of the message. However, when it feeds them to message-header-parser, it starts building up "full_value" buffer out of the smaller chunks. The full_value buffer has no size limit, so large headers can cause large memory usage. It doesn't matter whether it's a single long header line, or a single header split into multiple lines. This bug exists in all Dovecot versions. Incoming mails typically have some size limits set by MTA, so even largest possible header size may still fit into Dovecot's vsz_limit. So attackers probably can't DoS a victim user this way. A user could APPEND larger mails though, allowing them to DoS themselves (although maybe cause some memory issues for the backend in general). Workaround: One can implement restrictions on headers on MTA component preceding Dovecot. Fix: Install non-vulnerable version of Dovecot. Patch can be found at https://github.com/dovecot/core/compare/f020e13%5E...ce88c33.patch

1 0

Pigeonhole v0.5.21.1 released
by Aki Tuomi 14 Aug '24

14 Aug '24

Hi all, we are releasing new version of Pigeonhole. https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.21.1… https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.21.1… Binary packages in https://repo.dovecot.org/ Docker images in https://hub.docker.com/r/dovecot/dovecot Kind regards, Aki Tuomi Open-Xchange oy --- - sieve: When saving to local storage failed after a successful action in sieve (e.g. redirect, vacation), the mail was reported as successfully delivered, although it was lost locally.

1 0

Extra listener for client cert ?
by Laura Smith 13 Aug '24

13 Aug '24

Is it possible to, and (if yes) has anyone had experience with setting up an extra listener that requires client certs. The problem I've got is I still need to support Outlook clients. Fortunately these are located in fixed locations on desktop computers. Meanwhile, I would like to harden the configuration for road warriors who are all using devices and OSs that play nicer with client certs than Outlook does (well, Outlook doesn't play at all !). So I was thinking of opening 993 on a seperate IP address with that listener requiring client certificates. The alternative is, of course a VPN, which is still under consideration as an option. But even then, with the security onion, I'd still rather have both .... :)

1 0

Synchronize email folders
by Odhiambo Washington 13 Aug '24

13 Aug '24

I moved services to a new server (VPS) when I had issues with my hardware. Now I have copied data from the disk of the old server into the VPS. On the VPS, mail is delivered to /var/spool/virtual/DOMAIN/USER/Maildir/ I have the old emails in /root/DOMAIN/USER/Maildir. What is the easiest way to import the old emails into the current active folders without causing chaos with MuAs?? -- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 In an Internet failure case, the #1 suspect is a constant: DNS. "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]

3 3

Contents of folder symlinked not showing up
by Curt.Blank＠curtronics.com 10 Aug '24

10 Aug '24

I have the directory structure below. I was using uw-imap with Thunderbird. Due to cert issues with Thunderbird which have yet to be resolved at the moment I am using dovecot (2.3-6.11) with Apple's MacOS Mail app. dovecot server is running openSuSE Tumbleweed. With uw-imap & Thunderbird the directory structure and all the mbox's shown below showed up and were accessible in Thunderbird. With dovecot & Apple's MacOS Mail app I see the Archive directory but nothing underneath it. I do not see the In and Out directory nor any of the Year directories. At this point I do not know if the problem lies with dovecot not providing them via IMAP or if Apple's MacOS Mail is just not displaying them. So I am looking for information as to where the problem lies and what the solution is. dovecot -n is included below. /home/<user>/mail/Archive -> /Archive (soft symlink to different mount point) /Archive <directory> | +-> In <directory> | | | +-> 2018 <directory> | | | | | +-> 0118 <mbox> | | +-> 0218 <mbox> | | +-> 0318 <mbox> | | +-> 0418 <mbox> | | +-> 0518 <mbox> | | +-> 0618 <mbox> | | +-> 0718 <mbox> | | +-> 0818 <mbox> | | +-> 0918 <mbox> | | +-> 1018 <mbox> | | +-> 1118 <mbox> | | +-> 1218 <mbox> | | | +-> 2019 <directory> | | | | | +-> 0119 <mbox> | | +-> 0219 <mbox> | | +-> 0319 <mbox> | | +-> 0419 <mbox> | | +-> 0519 <mbox> | | +-> 0619 <mbox> | | +-> 0719 <mbox> | | +-> 0819 <mbox> | | +-> 0919 <mbox> | | +-> 1019 <mbox> | | +-> 1119 <mbox> | | +-> 1219 <mbox> | | | +-> etc. | | | +-> Out <directory> | +-> 2018 <directory> | | | +-> 0118 <mbox> | +-> 0218 <mbox> | +-> 0318 <mbox> | +-> 0418 <mbox> | +-> 0518 <mbox> | +-> 0618 <mbox> | +-> 0718 <mbox> | +-> 0818 <mbox> | +-> 0918 <mbox> | +-> 1018 <mbox> | +-> 1118 <mbox> | +-> 1218 <mbox> | +-> 2019 <directory> | | | +-> 0119 <mbox> | +-> 0219 <mbox> | +-> 0319 <mbox> | +-> 0419 <mbox> | +-> 0519 <mbox> | +-> 0619 <mbox> | +-> 0719 <mbox> | +-> 0819 <mbox> | +-> 0919 <mbox> | +-> 1019 <mbox> | +-> 1119 <mbox> | +-> 1219 <mbox> | +-> etc. | # 2.3.21 (47349e2482): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.21 (f6cd4b8e) # OS: Linux 6.9.7-1-default x86_64 # Hostname: cjbnew.curtronics.com <http://cjbnew.curtronics.com/> mail_location = mbox:~/mail:INBOX=/var/spool/mail/%u 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 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 } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve } protocols = imap ssl_cert = </etc/ssl/certs/imapd.crt ssl_cipher_list = ALL:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_options = no_compression ssl_prefer_server_ciphers = yes userdb { driver = passwd }

1 0

Event Export (auth_request_finished)
by Serhii 10 Aug '24

10 Aug '24

I am trying to implement logging of all failed authentication attempts to catch bruteforce automatically. Currently, I have the following configuration: > event_exporter log { > format = json > format_args = time-rfc3339 > transport = log > } > > metric auth_fail { > filter = event=auth_request_finished and not success=yes > exporter = log > } However, in logs I only see events similar to this: > { > "event": "auth_request_finished", > "hostname": "cheems", > "start_time": "2024-08-04T00:00:04.079723Z", > "end_time": "2024-08-04T00:00:12.224906Z", > "categories": [ > "service:auth", > "auth" > ], > "fields": { > "duration": 8145091, > "policy_result": "ok", > "mechanism": "LOGIN", > "transport": "trusted", > "service": "smtp", > "local_ip": "195.201.247.11", > "real_local_ip": "195.201.247.11", > "remote_ip": "185.29.xx.xx", > "real_remote_ip": "185.29.xx.xx", > "original_user": "example(a)example.com", > "user": "example(a)example.com", > "translated_user": "example(a)example.com" > } > } But for me it doesn't look like what is specified in docs[1]: > Field | Description > --- > error | Set when error happens > success | yes, when authentication succeeded > policy_penalty | Time of penalty added by policy server > policy_result | Values: ok, delayed, refused Why I don't see neither "success" and "error" field in logs? Also, why policy_result is ok despite I am logging only failed authentication attempts? From postfix I can see that those attempts were actually failed: > Aug 04 00:00:14 cheems postfix/smtpd[2362656]: warning: unknown[185.29.xx.xx]:54330: SASL LOGIN authentication failed: (reason unavailable), sasl_username=example(a)example.com [1]: https://doc.dovecot.org/admin_manual/list_of_events/#auth-request-finished -- Send unsolicited bulk mail to carle34(a)at.encryp.ch

2 2

lda not sending email on sieve correctly
by Eduardo Diaz Rodriguez 10 Aug '24

10 Aug '24

Hi to all I was using dovecot like 15 years on multiples debian places, and I have the same issue on debian 12 and debian 11. on my configuration I use exim with 2 process to send email, and at the same time use mailscanner to scan all the email that runs on the server. exim1 get the email, and put on the mailscanner directory and mailscanner scan the email and put on another directory to be send by exim2... Debian-+ 242594 1 0 Jul17 ? 00:00:15 /usr/sbin/exim4 -bd -oY -odq -oX 587:25 -oP /var/run/exim4/exim.pid Debian-+ 242597 1 0 Jul17 ? 00:00:01 /usr/sbin/exim4 -oP /run/exim4/eximqr.pid -q15m -oY -DOUTGOING I enable vacation the users, and works ok, but the issue is related the email sent by dovecot… The mail sent by dovecot lacks of the headers and the SPF and DKMI headers but if I sent the email form my command line using /usr/sbin/sendmail the email has the all the headers…. The mail issue here is with the norms for spam from google the nobody get the vacations emails reply. as far I see on the logs of sendmail I see only the email on the exim4 -DOutgoing (log) (I don't know why) because if I send the mail using send mail go to the whole process I don't know why dovecot send the mail to exim -DOUTGOING and not use sendmail on command line.. There any way to create a warper to capture the mail and sending "like this one" /usr/local/bin/dovecot-sendmail-wrapper I enable the debugn on send mail to see what is doing dovect but no luck Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: Debug: program exec:/usr/sbin/exim: Created Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: Debug: program exec:/usr/sbin/exim: Establishing connection Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: Debug: program exec:/usr/sbin/exim: Forked child process Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: Debug: program exec:/usr/sbin/exim (870409): Connected to program Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: Debug: program exec:/usr/sbin/exim (870409): Finished streaming payload to program Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: Debug: program exec:/usr/sbin/exim (870409): Finished input to program Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: Debug: program exec:/usr/sbin/exim (870409): Disconnected Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: Debug: program exec:/usr/sbin/exim (870409): Waiting for program to finish after 0 msecs (timeout = 30000 msecs) Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: Debug: program exec:/usr/sbin/exim (870409): Child process ended Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: Debug: program exec:/usr/sbin/exim (870409): Destroy Aug 8 02:13:27 servidorabm dovecot: lda(luis.alvarez)<870407><rujXC6cNtGYHSA0A40PlXQ>: sieve: msgid=<2118db23-b529-4b96-8d36-4a9ed7596a03(a)pk25.com>: vacation action: sent vacation response to <ediaz(a)pk25.com> I include a example: This is the mail headers sent using dovecot sendmail ================================================================================================================= X-Spam-Status: No X-Pk25-MailScanner-From: X-Pk25-MailScanner: Found to be clean X-Pk25-MailScanner-ID: 1sbqWj-005lt1-2y X-Pk25-MailScanner-Information: Please contact the ISP for more information Received: from mail-108-mta106.mxroute.com ([136.175.108.106]) by pk25.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) id 1sbqWj-005lt1-2y forediaz(a)pk25.com; Thu, 08 Aug 2024 01:57:12 +0200 Received: from filter006.mxroute.com ([136.175.111.3] filter006.mxroute.com) (Authenticated sender: mN4UYu2MZsgR) by mail-108-mta106.mxroute.com (ZoneMTA) with ESMTPSA id 1912f46520a0000a78.001 for<ediaz(a)pk25.com> (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384); Wed, 07 Aug 2024 23:57:03 +0000 X-Zone-Loop: a8a214dd47cb92b5b7d264d79136c8507fa7c5926b2e X-Originating-IP: [136.175.111.3] X-Sieve: Pigeonhole Sieve 0.5.13 (cdd19fe3) Message-ID:<dovecot-sieve-1723075020-644445-0(a)servidorabm.interno.abmarquitectos.com> Date: Thu, 08 Aug 2024 01:57:00 +0200 From:<luis.alvarez(a)abmarquitectos.com> To: "Eduardo Diaz Rodriguez"<ediaz(a)pk25.com> In-Reply-To:<071afcb4-79f6-40d6-b12a-e5b23528d951(a)pk25.com> References:<071afcb4-79f6-40d6-b12a-e5b23528d951(a)pk25.com> Auto-Submitted: auto-replied (vacation) Precedence: bulk X-Auto-Response-Suppress: All MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-ABM-MailScanner-Information: Please contact the ISP for more information X-ABM-MailScanner-ID: 1sbqWa-003eIu-Kz X-ABM-MailScanner: Found to be clean X-ABM-MailScanner-From: X-Authenticated-Id:smtp@abmarquitectos.com X-SA-Exim-Connect-IP: 136.175.108.106 X-SA-Exim-Mail-From: X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on servidor1.interno.pk25.com X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=BAYES_00,DMARC_NONE, SPF_HELO_NONE autolearn=no autolearn_force=no version=4.0.0 Subject: Respuesta =?utf-8?q?autom=C3=A1tica:?= Vacaciones / Out of office X-SA-Exim-Version: 4.2.1 (built Wed, 06 Jul 2022 17:57:39 +0000) X-SA-Exim-Scanned: Yes (on pk25.com) EstarÃ© de vacaciones del dÃa 5 al dÃa 23 de agosto ambos incluidos con un acceso muy limitado a mi email. Para cualquier asunto urgente, por favor contactar con el (+34) 91 4114375. Gracias I will be on holiday from the 5th to the 23rd of August (both inclusive) with very limited access to my email. For any urgent matters, please contact me on (+34) 91 4114375. Thank you ------------- ===================================================================================================== This is the email send using command line /usr/sbin/sendmail ediaz(a)pk25.com ===================================================================================================== X-Spam-Status: No X-Pk25-MailScanner-From:luis.alvarez@abmarquitectos.com X-Pk25-MailScanner: Found to be clean X-Pk25-MailScanner-ID: 1sbps4-005iuR-14 X-Pk25-MailScanner-Information: Please contact the ISP for more information Received-SPF: pass (pk25.com: domain of abmarquitectos.com designates 136.175.108.60 as permitted sender) client-ip=136.175.108.60;envelope-from=luis.alvarez(a)abmarquitectos.com; helo=mail-108-mta60.mxroute.com; Received: from mail-108-mta60.mxroute.com ([136.175.108.60]) by pk25.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from<luis.alvarez(a)abmarquitectos.com>) id 1sbps4-005iuR-14 forediaz(a)pk25.com; Thu, 08 Aug 2024 01:15:10 +0200 Received: from filter006.mxroute.com ([136.175.111.3] filter006.mxroute.com) (Authenticated sender: mN4UYu2MZsgR) by mail-108-mta60.mxroute.com (ZoneMTA) with ESMTPSA id 1912f1fde1f0000a78.001 for<ediaz(a)pk25.com> (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384); Wed, 07 Aug 2024 23:15:03 +0000 X-Zone-Loop: 9cbc8cfacf0e7622cc097cbc7366c12df531448419ec X-Originating-IP: [136.175.111.3] DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=abmarquitectos.com; s=x; h=Date:From:Message-Id:Sender:Reply-To:Subject:To: Cc:MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=6Vz2aHGFyNLtBTf9yGi/HE3IFNHwpvLh04DkcjY69c0=; b=YhXHjPytW0sUJxsgSer+Mmh8NK IBDuHoqQAsb2Ox3Q2fEtp3lQYx7SEiEzvOfUgzO8dsx9pa7n0nOnGck9R8zVZbjqQEXVourhjGZTA 5TbdPMBlti1o+qO4480DiQGJYF+nszamgMeNhwgePapYRUw0L8wE1cmIHgI5Fn+TnKITHuOZDiTjC Rq/eIQqQONoDNbJrfs3jQozuZ/Kd7yParMiAeJe8WYZUpZxW751kma1z+2xmlrTgWqrT60U9HkGfD 1n7kKug+qf13A3CDbbxmgt/AleosIO4jEyHw+RX+c/hry8jrxBfmE48Z9lLvtT9vgFwh8YFVo9Q1G AgEbd2hw==; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=abmarquitectos.com; s=abmarquitectos; h=Date:From:Message-Id:Sender: Reply-To:Subject:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=6Vz2aHGFyNLtBTf9yGi/HE3IFNHwpvLh04DkcjY69c0=; b=H8em8qDC0sVv5r7Oaw9KrCXrGY BhZUhR7naN8XxA58pfOEeE7k5rLZlDMtpsBmrQrCvYaFRqxUJjGNl0gR2ctWvNmmEDUsPMOQzSAsW ELU0jxQDfFaRBTor/Vq6aoN8vy8tlWb6aSLBUtN5p1vYsf/PlV+MtNV/uoll526FurjxWheTYeGBg r0QbSboEDVxMfBQ98aETqXgW4ZqkPBT73UD0azlppxDATAUbQYyZwosFGcptm7OzMyVmaARgiv52t 8hC58avWCiRJpjjyPf3y2PqmQ+LmoaZjgUS64rb1wp3U3xH18Z3WVZGTn3WVY2TG5cPx7gkEz8nft sS7qUGng==; Message-Id:<E1sbprp-003e0r-0P(a)abmarquitectos.com> From: Luis Alvarez<luis.alvarez(a)abmarquitectos.com> Date: Thu, 08 Aug 2024 01:14:54 +0200 X-ABM-MailScanner-Information: Please contact the ISP for more information X-ABM-MailScanner-ID: 1sbprp-003e0r-0P X-ABM-MailScanner: Found to be clean X-ABM-MailScanner-From:luis.alvarez@abmarquitectos.com X-DKIM: signer='abmarquitectos.com' status='pass' reason='' DKIMCheck: Server passes DKIM test, 0 Spam score X-Authenticated-Id:smtp@abmarquitectos.com X-SA-Exim-Connect-IP: 136.175.108.60 X-SA-Exim-Mail-From:luis.alvarez@abmarquitectos.com X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on servidor1.interno.pk25.com X-Spam-Level: X-Spam-Status: No, score=-4.3 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,DMARC_PASS,MISSING_HEADERS, MISSING_SUBJECT,RCVD_IN_DNSWL_HI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.0 X-SA-Exim-Version: 4.2.1 (built Wed, 06 Jul 2022 17:57:39 +0000) X-SA-Exim-Scanned: Yes (on pk25.com) prueba prueba prueba ------------- ------------- By Pk25.com

3 6

Userdb empty
by Cam Ellison 08 Aug '24

08 Aug '24

I have shifted from a system-based email system to virtual for a website I manage. The MTA is exim4, and user data are in a MySQL database. It will receive email, but with one exception the userdb is empty and emails go out with no username in the email address. Sample error message from exim: 2024-08-05 05:21:43 1sawid-00065N-0R Error while reading message with no usable sender address (R=1sawiX-00065C-1a): at least one malformed recipient address: @scasl.ca - no local part Here is the output of doveconf -n: # 2.3.19.1 (9b53102964): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.19 (4eae2f79) # OS: Linux 6.1.0-20-rt-686-pae i686 Debian 12.6 ext4 # Hostname: football.scasl.ca auth_debug = yes auth_default_realm = scasl.ca auth_mechanisms = plain login auth_username_format = %Ln auth_verbose = yes base_dir = /var/run/dovecot/ hostname = scasl.ca login_trusted_networks = 209.121.143.10/32 mail_debug = yes mail_gid = vmail mail_home = /var/vmail/%n mail_location = maildir:/var/vmail/%n/Maildir:INBOX=/var/vmail/%n/Maildir/INBOX mail_privileged_group = vmail mail_uid = vmail namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe 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 = separator = / } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } postmaster_address = postmaster(a)scasl.ca protocols = " imap" service auth { unix_listener auth-client { mode = 0666 } unix_listener auth-userdb { mode = 0666 } } service imap-login { service_count = 1 } service stats { unix_listener stats-reader { group = vmail mode = 0666 } unix_listener stats-writer { group = vmail mode = 0666 } } ssl_cert = </etc/dovecot/private/dovecot.pem ssl_client_ca_dir = /etc/ssl/certs ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } userdb { driver = passwd } There are two userdb entries, since one of the users is a system user. It is also the only one that appears in userdb. The relevant commands from dovecot-sql.conf.ext are here: password_query = SELECT email_username AS username, domain, email_password AS password FROM league WHERE email_username = '%n' user_query = SELECT CONCAT('/var/vmail/',email_username) AS home, 5000 AS uid, 5000 AS gid FROM league WHERE email_username = '%n' AND domain = '%d' iterate_query = SELECT email_username AS username, domain FROM league The vmail uid:gid is 5000:5000 As a side issue, it cannot open (/proc/self/io) - I'm not sure whether that means anything. Here is debugging output: 2024-08-05T06:33:18.777211-07:00 football dovecot: auth-worker(24847): Debug: Loading modules from directory: /usr/lib/dovecot/modules/auth 2024-08-05T06:33:18.777456-07:00 football dovecot: auth-worker(24847): Debug: Module loaded: /usr/lib/dovecot/modules/auth/lib20_auth_var_expand_crypt.so 2024-08-05T06:33:18.782112-07:00 football dovecot: auth-worker(24847): Debug: Module loaded: /usr/lib/dovecot/modules/auth/libdriver_mysql.so 2024-08-05T06:33:18.782392-07:00 football dovecot: auth-worker(24847): Debug: sqlpool(mysql): Creating new connection 2024-08-05T06:33:18.784671-07:00 football dovecot: auth-worker(24847): Debug: mysql(localhost): Connecting 2024-08-05T06:33:18.785532-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): Server accepted connection (fd=14) 2024-08-05T06:33:18.785703-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): Sending version handshake 2024-08-05T06:33:18.785850-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<1>: Handling PASSV request 2024-08-05T06:33:18.785986-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<1>: sql(scasl,209.121.143.14,<Z41TuO8eENjReY8O>): Performing passdb lookup 2024-08-05T06:33:18.786124-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<1>: sql(scasl,209.121.143.14,<Z41TuO8eENjReY8O>): query: SELECT email_username AS username, domain, emai l_password AS password FROM league WHERE email_username = 'scasl' 2024-08-05T06:33:18.786347-07:00 football dovecot: auth-worker(24847): Debug: mysql(localhost): Finished query 'SELECT email_username AS username, domain, email_password AS password FROM league WHERE email_username = 'scasl'' in 0 msecs 2024-08-05T06:33:18.786524-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<1>: sql(scasl,209.121.143.14,<Z41TuO8eENjReY8O>): username changed scasl -> scasl(a)scasl.ca 2024-08-05T06:33:18.786672-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<1>: sql(scasl(a)scasl.ca,209.121.143.14,<Z41TuO8eENjReY8O>): Finished passdb lookup 2024-08-05T06:33:18.786791-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<1>: Finished 2024-08-05T06:33:18.786940-07:00 football dovecot: auth: Debug: sql(scasl,209.121.143.14,<Z41TuO8eENjReY8O>): username changed scasl -> scasl(a)scasl.ca 2024-08-05T06:33:18.787098-07:00 football dovecot: auth: Debug: sql(scasl(a)scasl.ca,209.121.143.14,<Z41TuO8eENjReY8O>): Finished passdb lookup 2024-08-05T06:33:18.787239-07:00 football dovecot: auth: Debug: auth(scasl(a)scasl.ca,209.121.143.14,<Z41TuO8eENjReY8O>): Auth request finished 2024-08-05T06:33:18.787379-07:00 football dovecot: auth: Debug: client passdb out: OK#0111#011user=scasl(a)scasl.ca#011#011original_user=scasl 2024-08-05T06:33:18.794297-07:00 football dovecot: auth: Debug: master in: REQUEST#011600309761#01124843#0111#0115343bacecb1c0282e3e40282e4ebd64d#011session_pid=24849#011request_auth_token 2024-08-05T06:33:18.794568-07:00 football dovecot: auth: Debug: sql(scasl(a)scasl.ca,209.121.143.14,<Z41TuO8eENjReY8O>): Performing userdb lookup 2024-08-05T06:33:18.794712-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<2>: Handling USER request 2024-08-05T06:33:18.794859-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<2>: sql(scasl(a)scasl.ca,209.121.143.14,<Z41TuO8eENjReY8O>): Performing userdb lookup 2024-08-05T06:33:18.795004-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<2>: sql(scasl(a)scasl.ca,209.121.143.14,<Z41TuO8eENjReY8O>): SELECT CONCAT('/var/vmail/',email_username) A S home, 5000 AS uid, 5000 AS gid FROM league WHERE email_username = 'scasl' AND domain = 'scasl.ca' 2024-08-05T06:33:18.795222-07:00 football dovecot: auth-worker(24847): Debug: mysql(localhost): Finished query 'SELECT CONCAT('/var/vmail/',email_username) AS home, 5000 AS uid, 5000 AS gid FROM league WHERE email_username = 'scasl' AND domain = 'scasl.ca'' in 0 msecs 2024-08-05T06:33:18.795387-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<2>: sql(scasl(a)scasl.ca,209.121.143.14,<Z41TuO8eENjReY8O>): Finished userdb lookup 2024-08-05T06:33:18.795526-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): auth-worker<2>: Finished 2024-08-05T06:33:18.795660-07:00 football dovecot: auth: Debug: sql(scasl(a)scasl.ca,209.121.143.14,<Z41TuO8eENjReY8O>): Finished userdb lookup 2024-08-05T06:33:18.795899-07:00 football dovecot: auth: Debug: master userdb out: USER#011600309761#011scasl@scasl.ca#011home=/var/vmail/scasl#011uid=5000#011gid=5000#011auth_mech=PLAIN#011auth_token=e9d7425913886e014c83af029551e70f8db2 98f9#011auth_user=scasl 2024-08-05T06:33:18.796199-07:00 football dovecot: imap-login: Login: user=<scasl(a)scasl.ca>, method=PLAIN, rip=209.121.143.14, lip=209.121.143.10, mpid=24849, TLS, session=<Z41TuO8eENjReY8O> 2024-08-05T06:33:18.797562-07:00 football dovecot: imap(scasl(a)scasl.ca)<24849><Z41TuO8eENjReY8O>: Debug: Effective uid=5000, gid=5000, home=/var/vmail/scasl 2024-08-05T06:33:18.797718-07:00 football dovecot: imap(scasl(a)scasl.ca)<24849><Z41TuO8eENjReY8O>: Debug: open(/proc/self/io) failed: Permission denied 2024-08-05T06:33:18.798021-07:00 football dovecot: imap(scasl(a)scasl.ca)<24849><Z41TuO8eENjReY8O>: Debug: Namespace inbox: type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:/var/vmail/scasl/M aildir:INBOX=/var/vmail/scasl/Maildir/INBOX 2024-08-05T06:33:18.798286-07:00 football dovecot: imap(scasl(a)scasl.ca)<24849><Z41TuO8eENjReY8O>: Debug: maildir++: root=/var/vmail/scasl/Maildir, index=, indexpvt=, control=, inbox=/var/vmail/scasl/Maildir/INBOX, alt= 2024-08-05T06:33:18.799780-07:00 football dovecot: imap(scasl(a)scasl.ca)<24849><Z41TuO8eENjReY8O>: Debug: Mailbox INBOX: Mailbox opened 2024-08-05T06:34:18.830024-07:00 football dovecot: auth-worker(24847): Debug: conn unix:auth-worker (pid=24845,uid=121): Disconnected: Connection closed (fd=-1) 2024-08-05T06:34:18.882117-07:00 football dovecot: auth-worker(24847): Debug: mysql(localhost): Connection finished (queries=2, slow queries=0) 2024-08-05T06:34:19.349925-07:00 football dovecot: auth: Debug: mysql(localhost): Connection finished (queries=0, slow queries=0) Sorry this is so long. What am I doing wrong here? Thank you in advance Cam

2 2

username_filter settings in passdb
by zaxwat93＠gmail.com 06 Aug '24

06 Aug '24

got a problem when configured passdb with username_filter — looks like the option doesn't work OS: FreeBSD 13 and 14. Dovecot version: 2.3.21 Part of config: passdb { args = /usr/local/bin/php /usr/local/dovecot/bin/checkpassword.php driver = checkpassword } passdb { args = /usr/local/bin/php /usr/local/dovecot/bin/checkpassword.php driver = checkpassword username_filter = user1(a)postmaster.local.one default_fields = domain=local.one override_fields = user=postmaster(a)local.one } passdb { args = /usr/local/bin/php /usr/local/dovecot/bin/checkpassword.php driver = checkpassword username_filter = user3(a)user2.local.one default_fields = domain=local.one override_fields = user=user2(a)local.one } When I try command "doveadm auth test user1(a)postmaster.local.one" and enter a password of user1 — it works as planned — change user1(a)postmaster.local.one to user1(a)local.one check it's password and override user to postmaster(a)local.one But when I try "doveadm auth test user3(a)user2.local.one" — it also change user3(a)user2.local.one to user3(a)local.one, and after password check — override it to postmaster(a)local.one Debug logs, when I try "doveadm auth test user3(a)user2.local.one": Aug 1 11:01:03 auth: Debug: Loading modules from directory: /usr/local/lib/dovecot/auth Aug 1 11:01:03 auth: Debug: Module loaded: /usr/local/lib/dovecot/auth/lib20_auth_var_expand_crypt.so Aug 1 11:01:03 auth: Debug: Read auth token secret from /var/run/dovecot/auth-token-secret.dat Aug 1 11:01:03 auth: Debug: passwd-file /usr/local/etc/dovecot.users.list:Read 7 users in 0 secs Aug 1 11:01:03 auth: Debug: auth client connected (pid=0) Aug 1 11:01:03 auth: Debug: client in: AUTH 1 PLAIN service=doveadm debug resp=<hidden> Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)user2.local.one): Performing passdb lookup Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)user2.local.one): execute: /usr/local/bin/php /usr/local/dovecot/bin/checkpassword.php /usr/local/libexec/dovecot/checkpassword-reply Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)user2.local.one): Received input: Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)user2.local.one): exit_status=1 Aug 1 11:01:03 auth: checkpassword(user3(a)user2.local.one): Login failed (status=1) Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)user2.local.one): Finished passdb lookup Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)user2.local.one): Performing passdb lookup Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)user2.local.one): username changed user3(a)user2.local.one -> user3(a)local.one Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)local.one): execute: /usr/local/bin/php /usr/local/dovecot/bin/checkpassword.php /usr/local/libexec/dovecot/checkpassword-reply Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)local.one): Received input: user=user3(a)local.one userdb_home=/var/spool/mail/ userdb_uid=dovecot userdb_gid=dovecot Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)local.one): exit_status=0 Aug 1 11:01:03 auth: Debug: checkpassword(user3(a)local.one): username changed user3(a)local.one -> postmaster(a)local.one Aug 1 11:01:03 auth: Debug: checkpassword(postmaster(a)local.one): Finished passdb lookup Aug 1 11:01:03 auth: Debug: auth(postmaster(a)local.one): Auth request finished Aug 1 11:01:03 auth: Debug: client passdb out: OK 1 user=postmaster(a)local.one original_user=user3(a)user2.local.one I've checked sources and find in " core/src/auth/auth-request.c (from line 617) " code that check username_filter and should send "skipping passdb: username filtered" message in debug, but it doesn't do it. Is it a bug or I've missed something in setup?

3 10

dsync crashing
by Benjamin Rose 05 Aug '24

05 Aug '24

Hello, I am running Dovecot 2.3.16 (7e2e900c1a) on RHEL 9.2. I attach my "doveconf -n" configuration. I have replication enabled between 2 servers, both very beefy with 16 cores of Intel(R) Xeon(R) Gold 6244 CPU @ 3.60GHz, 768gb memory, and 100-gig ethernet. The configs are the same except the replication part which points at each other via a puppet template. It seems to work well for most users on modern email clients using the mdbox storage format. The issue I'm having is that some of my users are on the old-style mbox storage format so they can use legacy mail readers such as pine and mutt natively. For some of these users, syncing works just fine. For others, right now about a dozen users, the sync never completes, and I get the following error & backtrace in /var/log/maillog: Aug 4 23:54:22 mail6 dovecot[1177530]: doveadm: Panic: file dsync-mailbox-import.c: line 2163 (dsync_mailbox_import_handle_mail): assertion failed: (array_count(&wanted_uids) > 0) Aug 4 23:54:22 mail6 dovecot[1177530]: doveadm: Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(backtrace_append+0x46) [0x7fa6ab05c486] -> /usr/lib64/dovecot/libdovecot.so.0(backtrace_get+0x22) [0x7fa6ab05c5a2] -> /usr/lib64/dovecot/libdovecot.so.0(+0x10a41b) [0x7fa6ab06b41b] -> /usr/lib64/dovecot/libdovecot.so.0(+0x10a4b7) [0x7fa6ab06b4b7] -> /usr/lib64/dovecot/libdovecot.so.0(+0x5d11a) [0x7fa6aafbe11a] -> dovecot/doveadm-server(+0x24029) [0x56433f2f7029] -> dovecot/doveadm-server(dsync_mailbox_import_changes_finish+0x29c) [0x56433f32fb9c] -> dovecot/doveadm-server(dsync_brain_sync_mails+0x8d5) [0x56433f331f15] -> dovecot/doveadm-server(+0x52255) [0x56433f325255] -> dovecot/doveadm-server(+0x52639) [0x56433f325639] -> dovecot/doveadm-server(+0x5fa53) [0x56433f332a53] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x6d) [0x7fa6ab081cbd] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x13a) [0x7fa6ab083bba] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x54) [0x7fa6ab083c64] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x40) [0x7fa6ab083e20] -> dovecot/doveadm-server(+0x37d7c) [0x56433f30ad7c] -> dovecot/doveadm-server(+0x3974d) [0x56433f30c74d] -> dovecot/doveadm-server(+0x5020b) [0x56433f32320b] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x6d) [0x7fa6ab081cbd] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x13a) [0x7fa6ab083bba] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x54) [0x7fa6ab083c64] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x40) [0x7fa6ab083e20] -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x17) [0x7fa6aaff2337] -> dovecot/doveadm-server(main+0x102) [0x56433f2f8f92] -> /lib64/libc.so.6(+0x3feb0) [0x7fa6aac3feb0] -> /lib64/libc.so.6(__libc_start_main+0x80) [0x7fa6aac3ff60] -> dovecot/doveadm-server(_start+0x25) [0x56433f2f9015] Aug 4 23:54:22 mail6 dovecot[1177530]: doveadm: Fatal: master: service(doveadm): child 1117475 killed with signal 6 (core dumped) I'm not sure what might be causing this, and wanted to see if anyone here could offer any suggestions. Please let me know if any additional information is needed. Thanks, Ben

3 7

Strange ssl/dso troubles on freeBSD13.3
by Georg Graf 02 Aug '24

02 Aug '24

Hi, I'm George and I think I've been running dovecot for like more than a decade now without any troubles, so: WOW! Nevertheless, after an upgrade from FreeBSD 13.2 to 13.3 plus "pkg upgrade" my dovecot installation refuses to load the ssl certificates. I've tried a version built from source as well as the package. The Problem seems to be something with loading of DSO's: ========================================================================================================= Jul 31 16:42:11 murl dovecot[10801]: imap-login: Error: Failed to initialize SSL server context: Can't load SSL certificate (ssl_cert setting): error:25066067:DSO support routines:dlfcn_load:could not load the shared library: filename(libproviders.so): Shared object "libproviders.so" not found, required by "imap-login", error:25070067:DSO support routines:DSO_load:could not load the shared library, error:0E07506E:configuration file routines:module_load_dso:error loading dso: module=providers, path=providers, error:0E076071:configuration file routines:mo ========================================================================================================= I have never seen 'libproviders' and there's not a lot on it on the internet as well. Here comes my (dead-simple) 'dovecot -n': ========================================================================================================= # 2.3.21 (47349e2482): /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 13.3-RELEASE-p4 amd64 # Hostname: murl.graf.priv.at auth_mechanisms = plain login disable_plaintext_auth = no mail_location = maildir:~/Maildir:LAYOUT=fs:INBOX=~/Maildir passdb { driver = pam } protocols = imap ssl_cert = </root/.acme.sh/graf.priv.at/fullchain.cer ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { args = blocking=yes driver = passwd } verbose_ssl = yes protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep } ========================================================================================================= My openssl s_client shows that the server hangs up (while producing the above log entry): ========================================================================================================= # openssl s_client -servername graf.priv.at -connect graf.priv.at:imaps CONNECTED(00000003) write:errno=0 --- no peer certificate available --- No client certificate CA names sent --- SSL handshake has read 0 bytes and written 314 bytes Verification: OK --- New, (NONE), Cipher is (NONE) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE No ALPN negotiated Early data was not sent Verify return code: 0 (ok) --- ========================================================================================================= Just to mention: plaintext IMAP is still working: ========================================================================================================= # telnet graf.priv.at imap Trying 78.41.116.33... Connected to graf.priv.at. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ STARTTLS AUTH=PLAIN AUTH=LOGIN] Dovecot ready. u login georg <mysupersecretpassword> u OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAM ESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY PREVIEW=FUZZY PREVIEW STATUS=SIZE SAVEDATE LITE RAL+ NOTIFY] Logged in r select INBOX * FLAGS (\Answered \Flagged \Deleted \Seen \Draft $Forwarded $MDNSent $label5 $label3) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft $Forwarded $MDNSent $label5 $label3 \*)] Flags permitted. * 359 EXISTS * 0 RECENT * OK [UNSEEN 2] First unseen. * OK [UIDVALIDITY 1509040425] UIDs valid * OK [UIDNEXT 11767] Predicted next UID * OK [HIGHESTMODSEQ 19640] Highest r OK [READ-WRITE] Select completed (0.006 + 0.000 + 0.005 secs). s logout * BYE Logging out s OK Logout completed (0.001 + 0.000 secs). Connection closed by foreign host. ========================================================================================================= Any helping hint is highly appreciated! Thank you very much, George

2 3

RE: lmtp Fatal: setresgid Operation not permitted
by Rachel Roch 31 Jul '24

31 Jul '24

>> I am getting the following error when Postfix attempts LMTP delivery : >> >> "lmtp(REDACTED)<32674><7Jm0BSVopmaifwAAbW4UVQ>: Fatal: >> setresgid(121(mailbox_user),121(mailbox_user),8(mail)) failed with >> euid=111(mailbox_user): Operation not permitted" >> >> mailbox_user is uid 111, gid 121 on my system. >> > > Not related to low uid/gid numbers? I think newer OS have their limits increased to above 1000 or so. > Well, my OS is Debian Bookworm which should be "newer" enough ? ;-) User/group were originally created via : adduser --system --disabled-login --shell /usr/sbin/nologin mailbox_user addgroup --system mailbox_user

3 2

lmtp Fatal: setresgid Operation not permitted
by Rachel Roch 28 Jul '24

28 Jul '24

I am getting the following error when Postfix attempts LMTP delivery : "lmtp(REDACTED)<32674><7Jm0BSVopmaifwAAbW4UVQ>: Fatal: setresgid(121(mailbox_user),121(mailbox_user),8(mail)) failed with euid=111(mailbox_user): Operation not permitted" mailbox_user is uid 111, gid 121 on my system. doveconf -n ============= ============= # 2.3.19.1 (9b53102964): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.19 (4eae2f79) # OS: Linux 6.1.0-22-cloud-amd64 x86_64 Debian 12.6 xfs # Hostname: REDACTED auth_verbose = yes auth_verbose_passwords = sha1:7 doveadm_password = # hidden, use -P to show it first_valid_gid = 121 first_valid_uid = 111 imap_capability = +SPECIAL-USE imapc_features = rfc822.size fetch-headers fetch-bodystructure imapc_port = 993 imapc_ssl = imaps last_valid_gid = 121 last_valid_uid = 111 mail_location = maildir:/mnt/mxData/dovecot/%d/%n/Maildir mail_plugins = notify replication push_notification 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 namespace inbox { inbox = yes location = mailbox "Deleted Messages" { auto = no special_use = \Trash } mailbox Drafts { special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = /etc/dovecot/local_sql_users.conf driver = sql } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve } protocols = imap lmtp sieve service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0660 user = postfix } vsz_limit = 2 G } service doveadm { inet_listener { port = 11867 ssl = yes } } service imap-login { process_min_avail = 5 service_count = 1 } service lmtp { process_min_avail = 5 unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0660 user = postfix } user = mailbox_user } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieves { address = port = 5190 ssl = yes } } ssl = required ssl_cert = <REDACTED 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_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 { args = /etc/dovecot/local_sql_users.conf default_fields = uid=mailbox_user gid=mailbox_user home=/mnt/mxData/dovecot/%d/%n driver = sql } protocol lmtp { mail_plugins = notify replication push_notification sieve } protocol lda { deliver_log_format = msgid=%m: %$ mail_plugins = notify replication push_notification sieve quota_full_tempfail = yes rejection_reason = Your message to <%t> was automatically rejected:%n%r } protocol imap { mail_max_userip_connections = 20 mail_plugins = notify replication push_notification imap_sieve } ======= ======= postconf -n ======== ======== alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases authorized_submit_users = biff = no compatibility_level = 2 default_database_type = cdb disable_vrfy_command = yes home_mailbox = Maildir/ indexed = ${default_database_type}:${config_directory}/ inet_interfaces = all inet_protocols = all mailbox_size_limit = 0 message_size_limit = 20480000 mydestination = REDACTED,localhost mydomain = REDACTED myhostname = REDACTED mynetworks = $config_directory/mynetworks mynetworks_style = subnet myorigin = $mydomain parent_domain_matches_subdomains = recipient_delimiter = + smtp_bind_address = 0.0.0.0 smtp_bind_address6 = :: smtp_sasl_auth_enable = no smtp_tls_policy_maps = ${indexed}smtp_tls_policy smtpd_banner = $myhostname ESMTP smtpd_recipient_restrictions = reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_pipelining, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination smtpd_sasl_auth_enable = no smtpd_sasl_local_domain = $myhostname smtpd_sasl_security_options = noanonymous smtpd_sender_restrictions = reject_unknown_sender_domain smtpd_tls_auth_only = yes smtpd_tls_cert_file = REDACTED smtpd_tls_dh1024_param_file = REDACTED smtpd_tls_eecdh_grade = strong smtpd_tls_key_file = REDACTED smtpd_tls_mandatory_ciphers = high smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1 smtpd_tls_protocols = !SSLv2, !SSLv3, !TLSv1, !TLSv1.1 smtpd_tls_security_level = may tls_eecdh_strong_curve = prime256v1 tls_preempt_cipherlist = yes tls_random_source = dev:/dev/random virtual_alias_maps = pgsql:${config_directory}/pgsql_virtual.conf virtual_gid_maps = static:121 virtual_mailbox_base = /mnt/mxData/dovecot virtual_mailbox_domains = ${config_directory}/vhosts virtual_mailbox_maps = pgsql:${config_directory}/pgsql_vmap.conf virtual_transport = lmtp:unix:private/dovecot-lmtp virtual_uid_maps = static:111 ======== ========

2 1

dovecot-lda: timeout for external scripts called by sieve
by Meinhard Schneider 28 Jul '24

28 Jul '24

Hello, I have a small problem with dovecot-lda. I am using Debian 12 Bookworm: root@lnxmail01:~# dovecot --version 2.3.13 (89f716dc2) Historically grown (probably still from sendmail times, long time ago) I always used procmail for local e-mail delivery. This also included the call for spamc for SpamAssassin. I have now changed this and set up a route via sieve. There is a small script for this: root@lnxmail01:~# cat /usr/lib/dovecot/sieve-filter/spamc-filter.sh #!/bin/bash /usr/bin/spamc My sieve configuration says (in extracts): root@lnxmail01:~# head -12 ~meini/.dovecot.sieve ## Generated by Roundcube Webmail SieveRules Plugin ## require ["body","comparator-i;ascii-numeric","copy","envelope","fileinto","imap4flags","include","regex","relational","spamtestplus","vacation","variables","spamtest"]; include :global "spamc"; # rule:[Spam] if spamtest :value "ge" :comparator "i;ascii-numeric" "5" { fileinto "Spam"; stop; } In general, this has been working for many months without any problems. But sometimes the whole thing fails due to a timeout: Jul 7 22:00:13 lnxmail01 dovecot: lda(meini)<766014><G9l7JcPzimY+sAsAmbNf3A>: Error: program exec:/usr/lib/dovecot/sieve-filter/spamc-filter.sh (766016): Execution timed out (> 10000 msecs) Jul 7 22:00:13 lnxmail01 dovecot: lda(meini)<766014><G9l7JcPzimY+sAsAmbNf3A>: Error: program exec:/usr/lib/dovecot/sieve-filter/spamc-filter.sh (766016): Forcibly terminated with signal 15 Jul 7 22:00:13 lnxmail01 dovecot: lda(meini)<766014><G9l7JcPzimY+sAsAmbNf3A>: Panic: output stream (temp iostream in /tmp/dovecot.lda. for (program client seekable output)) is missing error handling Jul 7 22:00:13 lnxmail01 dovecot: lda(meini)<766014><G9l7JcPzimY+sAsAmbNf3A>: Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x42) [0x7ff00aee04e2] -> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7ff00aee05fe] -> /usr/lib/dovecot/libdovecot.so.0(+0xfc49b) [0x7ff00aeec49b] -> /usr/lib/dovecot/libdovecot.so.0(+0xfc501) [0x7ff00aeec501] -> /usr/lib/dovecot/libdovecot.so.0(+0x53aee) [0x7ff00ae43aee] -> /usr/lib/dovecot/libdovecot.so.0(o_stream_unref+0x5e) [0x7ff00af1003e] -> /usr/lib/dovecot/libdovecot.so.0(program_client_destroy+0x8e) [0x7ff00ae6ee6e] -> /usr/lib/dovecot/modules/sieve/lib90_sieve_extprograms_plugin.so(sieve_extprogram_destroy+0x18) [0x7ff00aacd8f8] -> /usr/lib/dovecot/modules/sieve/lib90_sieve_extprograms_plugin.so(+0x556d) [0x7ff00aacb56d] -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_interpreter_continue+0xea) [0x7ff00ab4c9ba] -> /usr/lib/dovecot/libdovecot-sieve.so.0(ext_include_execute_include+0x2c7) [0x7ff00ab72e17] -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_interpreter_continue+0xea) [0x7ff00ab4c9ba] -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_multiscript_run+0x82) [0x7ff00ab62b32] -> /usr/lib/dovecot/modules/lib90_sieve_plugin.so(+0x37a3) [0x7ff00abd47a3] -> /usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver+0x176) [0x7ff00b11f906] -> /usr/lib/dovecot/dovecot-lda(main+0x879) [0x55ef085e4fb9] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xea) [0x7ff00ac3ad0a] -> /usr/lib/dovecot/dovecot-lda(_start+0x2a) [0x55ef085e56ea] The worst thing is that the entire mail is lost (/dev/null)! Then I tried to set the timeout higher (than the current 10 seconds): root@lnxmail01:~# doveconf | grep -A 12 ^plugin plugin { sieve = file:~/sieve;active=~/.dovecot.sieve sieve_execute_exec_timeout = 60s sieve_extension_exec_timeout = 60s sieve_extensions = +vnd.dovecot.filter +spamtest +spamtestplus sieve_filter_bin_dir = /usr/lib/dovecot/sieve-filter sieve_filter_socket_dir = sieve-filter sieve_global = /usr/lib/dovecot/sieve-global sieve_plugins = sieve_extprograms sieve_spamtest_max_value = 5 sieve_spamtest_status_header = X-Spam-Level sieve_spamtest_status_type = strlen } I have set both the values for "sieve_execute_exec_timeout" and "sieve_extension_exec_timeout" to 60 sec, but according to the log, this does not seem to affect the 10000 msec mentioned therein. The SpamAssassin daemon has enough child processes to handle the requests (most of them were idle at the time of the error). How can I configure that the external script gets more time for execution? And what can I do so that - should the script terminate contrary to expectations or be killed in the timeout - the mail is not lost but simply processed further? Many thanks & best regards Meinhard

2 5

Looking for Some Help with Dovecot Configuration for IMAP Access
by Selena Thomas 27 Jul '24

27 Jul '24

Hi everyone, I am having a bit of trouble setting up Dovecot for IMAP access. I’ve installed Dovecot and configured the main configuration file,, but I am not sure if I missed something important. Here’s what I have so far ::- 1. Dovecot Version: 2.3.11 2. OS: Ubuntu 20.04 3. Configuration Files: - `/etc/dovecot/dovecot.conf` - `/etc/dovecot/conf.d/10-ssl.conf` - `/etc/dovecot/conf.d/10-auth.conf` I can connect to the server, but I’m having issues with mailbox access and authentication. Does anyone have any tips or common pitfalls I should check: ?? Any guidance would be greatly appreciated..... Thanks in advance... Selena Thomas https://www.igmguru.com/cloud-computing/microsoft-azure-administrator-az-10…

2 1

Sieve duplicate detection not working as expected
by Rosario Esposito 26 Jul '24

26 Jul '24

Hi, On a dovecot server (2.3.21) I have a simple sieve script: require ["duplicate"]; # rule:[duplicate] if duplicate { discard; stop; } I use virtual users with mail aliases on a LDAP backend. I have user "resposit" having 2 mail aliases: - resposit(a)na.infn.it - rosario.esposito(a)na.infn.it If I send a single message to both aliases I still receive 2 copies as you can see from the attached log. Is the "duplicate" sieve extension supposed to work this way ? Any help would be much appreciated ! -- Rosario Esposito

2 3

SMTPUTF8 support
by Dāvis Mosāns 26 Jul '24

26 Jul '24

Hi, I'm interested in SMTPUTF8 support in Dovecot. It seems it's still not implemented? Any plans on implementing it? How much work would it be? I couldn't find any mention of this functionality. Postfix has support which is enabled by default but it's not usable if Dovecot doesn't support it. Thanks! Best regards, Dāvis

2 3

Re: [EXT] Re[8]: Sieve Filters with MySQL
by Aki Tuomi 26 Jul '24

26 Jul '24

It's OK to hide it to the mailbox table as sieveFilterID. Then you can do map { pattern = priv/sieve/name/default table = mailbox username_field = email value_field = sieveFilterID } Aki > On 26/07/2024 10:14 EEST Adam Miller <adam(a)ardaemail.com> wrote: > > > ------ Original Message ------ > From "Aki Tuomi via dovecot" <dovecot(a)dovecot.org> > To "Adam Miller" <adam(a)ardaemail.com>; "Adam Miller via dovecot" > <dovecot(a)dovecot.org> > Date 7/23/2024 10:06:38 PM > Subject Re: Re[6]: Sieve Filters with MySQL > > >Hi! > > > >Usually how the "isActive" stuff is done is bit different. > > > >fwiw i would do the schema differently, and have two tables > > > >table 1: > > > >CREATE TABLE sieve_name_id ( > > id INT, > > email VARCHAR(255), > > name VARCHAR(255), > > PRIMARY KEY(email, name) > >) > > > >table 2 > > > >CREATE TABLE sieve_scripts ( > > id INT, > > content TEXT > >) > > > >Then you can map 'default' to the active script id, or leave it missing when there is no script enabled. This is how it's supposed to work. > > > >It's probably not dead obvious but if you look at the dict configuration you have: > > > >map { > > pattern = priv/sieve/name/$script_name > > table = mailboxFilter > > username_field = email > > value_field = uuid > > fields { > > name = $script_name > > } > >} > > > >You can see that the priv/sieve/name/ is not part of $script_name that is passed to sql in fields. > > > >btw, to debug SQL, you can try > > > >log_debug=category=sql > > > >next time. > > > >Aki > > > > > >> On 24/07/2024 00:42 EEST Adam Miller via dovecot <dovecot(a)dovecot.org> wrote: > >> > >> > >> Is it possible to include extra fields? For example, the “isActive” and > >> make sure it is true / 1? > >> > >> Thank you. > >> > >> > >> ------ Original Message ------ > >> From "Aki Tuomi via dovecot" <dovecot(a)dovecot.org> > >> To "Adam Miller" <adam(a)ardaemail.com>; "Adam Miller via dovecot" > >> <dovecot(a)dovecot.org> > >> Date 7/23/2024 4:44:30 AM > >> Subject Re: Re[4]: Sieve Filters with MySQL > >> > >> >You can try > >> > > >> >doveadm dict get -u adam proxy::sieve priv/sieve/name/default > >> > > >> >this should return id of the default script. > >> > > >> >doveadm dict get -u adam proxy::sieve priv/sieve/data/<id> > >> > > >> >should return the actual script. > >> > > >> >See https://doc.dovecot.org/configuration_manual/sieve/dict/ > >> > > >> >Aki > >> > > >> > > >> >> On 23/07/2024 14:09 EEST Adam Miller via dovecot <dovecot(a)dovecot.org> wrote: > >> >> > >> >> > >> >> Yes, I get that. What I would like to know is what are the queries that > >> >> Dovecot / Sieve is executing so that I can better determine where the > >> >> issue exists? Is there anyway to see them? Do you see an issue anywhere > >> >> in my configuration files? > >> >> > >> >> Thank you. > >> >> > >> >> > >> >> ------ Original Message ------ > >> >> From "Aki Tuomi" <aki.tuomi(a)open-xchange.com> > >> >> To "Adam Miller" <adam(a)ardaemail.com>; "Adam Miller via dovecot" > >> >> <dovecot(a)dovecot.org> > >> >> Date 7/23/2024 4:07:22 AM > >> >> Subject Re: Re[2]: Sieve Filters with MySQL > >> >> > >> >> >Jul 23 10:34:40 lmtp(redacted)<228576><CM1ZFUCHn2bgfAMAwHdlHA>: Debug: > >> >> >sieve: dict storage: script `default': Script `default' not found at > >> >> >path priv/sieve/name/default > >> >> > > >> >> >Aki > >> >> > > >> >> >> On 23/07/2024 13:52 EEST Adam Miller via dovecot <dovecot(a)dovecot.org> wrote: > >> >> >> > >> >> >> > >> >> >> Yes, that is where I got the error from. Here’s more from the log file: > >> >> >> > >> >> >> Jul 23 10:34:40 lmtp(redacted)<228576><CM1ZFUCHn2bgfAMAwHdlHA>: Debug: > >> >> >> sieve: Pigeonhole version 0.5.16 (09c29328) initializing > >> >> >> Jul 23 10:34:40 lmtp(redacted)<228576><CM1ZFUCHn2bgfAMAwHdlHA>: Debug: > >> >> >> sieve: include: sieve_global is not set; it is currently not possible to > >> >> >> include `:global’ scripts. > >> >> >> Jul 23 10:34:40 lmtp(redacted)<228576><CM1ZFUCHn2bgfAMAwHdlHA>: Debug: > >> >> >> sieve: Sieve imapsieve plugin for Pigeonhole version 0.5.16 (09c29328) > >> >> >> loaded > >> >> >> Jul 23 10:34:40 lmtp(redacted)<228576><CM1ZFUCHn2bgfAMAwHdlHA>: Debug: > >> >> >> sieve: Sieve Extprograms plugin for Pigeonhole version 0.5.16 (09c29328) > >> >> >> loaded > >> >> >> Jul 23 10:34:40 lmtp(redacted)<228576><CM1ZFUCHn2bgfAMAwHdlHA>: Debug: > >> >> >> sieve: dict storage: user=redacted, uri=proxy::sieve > >> >> >> Jul 23 10:34:40 lmtp(redacted)<228576><CM1ZFUCHn2bgfAMAwHdlHA>: Debug: > >> >> >> sieve: dict storage: script `default': Script `default' not found at > >> >> >> path priv/sieve/name/default > >> >> >> Jul 23 10:34:40 lmtp(redacted)<228576><CM1ZFUCHn2bgfAMAwHdlHA>: Debug: > >> >> >> sieve: User has no active script in storage > >> >> >> `dict:proxy::sieve;user=redacted’ > >> >> >> Jul 23 10:34:40 lmtp(redacted)<228576><CM1ZFUCHn2bgfAMAwHdlHA>: Debug: > >> >> >> sieve: User has no personal script > >> >> >> Jul 23 10:34:40 lmtp(redacted)<228576><CM1ZFUCHn2bgfAMAwHdlHA>: Debug: > >> >> >> sieve: No scripts to execute: reverting to default delivery. > >> >> >> > >> >> >> Is there something specific I should be looking for? > >> >> >> > >> >> >> Thank you! > >> >> >> > >> >> >> ------ Original Message ------ > >> >> >> From "Aki Tuomi via dovecot" <dovecot(a)dovecot.org> > >> >> >> To "Adam Miller" <adam(a)ardaemail.com>; "Adam Miller via dovecot" > >> >> >> <dovecot(a)dovecot.org> > >> >> >> Date 7/23/2024 3:35:17 AM > >> >> >> Subject Re: Sieve Filters with MySQL > >> >> >> > >> >> >> >Did you try with > >> >> >> > > >> >> >> >mail_debug=yes > >> >> >> > > >> >> >> >and > >> >> >> > > >> >> >> >log_debug=category=sieve > >> >> >> > > >> >> >> >Aki > >> >> >> > > >> >> >> >> On 23/07/2024 13:18 EEST Adam Miller via dovecot <dovecot(a)dovecot.org> wrote: > >> >> >> >> > >> >> >> >> > >> >> >> >> Me again! I am trying to get sieve filters working with a MySQL backend > >> >> >> >> but same to be coming up short. Right now, the error I am getting > >> >> >> >> received is: > >> >> >> >> > >> >> >> >> ------------------------------------------------------------------------------------------------------------------ > >> >> >> >> > >> >> >> >> "User has no active script in storage > >> >> >> >> dict:proxy::sieve;user=username@domain.com" > >> >> >> >> > >> >> >> >> ------------------------------------------------------------------------------------------------------------------ > >> >> >> >> > >> >> >> >> The “username(a)domain.xn--com-9o0a is obviously the email address of the > >> >> >> >> receiving mailbox. > >> >> >> >> > >> >> >> >> Here’s my latest config: > >> >> >> >> > >> >> >> >> # 2.3.16 (7e2e900c1a): /etc/dovecot/dovecot.conf > >> >> >> >> # Pigeonhole version 0.5.16 (09c29328) > >> >> >> >> # OS: Linux 6.5.0-1020-aws x86_64 Ubuntu 22.04.4 LTS nfs4 > >> >> >> >> # Hostname: ec2-us-east-1a-arda-mail-001.ardaemail.com > >> >> >> >> auth_debug = yes > >> >> >> >> auth_mechanisms = plain login > >> >> >> >> auth_verbose = yes > >> >> >> >> auth_worker_max_count = 5 > >> >> >> >> base_dir = /var/run/dovecot > >> >> >> >> debug_log_path = /var/log/dovecot/debug.log > >> >> >> >> default_internal_group = ardaemail > >> >> >> >> default_internal_user = ardaemail > >> >> >> >> dict { > >> >> >> >> quota = mysql:/etc/dovecot/inc.d/inc.quota.user.sql.conf > >> >> >> >> sieve = mysql:/etc/dovecot/inc.d/inc.sieve.sql.conf > >> >> >> >> sql = mysql:/etc/dovecot/inc.d/inc.lastlogin.sql.conf > >> >> >> >> } > >> >> >> >> hostname = = mail.ardaemail.com > >> >> >> >> info_log_path = /var/log/dovecot/info.log > >> >> >> >> instance_name = ec2-us-east-1a-arda-mail-001.ardaemail.com > >> >> >> >> listen = 172.16.0.200 > >> >> >> >> log_path = /var/log/dovecot/general.log > >> >> >> >> login_greeting = Welcome to ArdaEmail > >> >> >> >> mail_debug = yes > >> >> >> >> mail_gid = ardaemail > >> >> >> >> mail_location = maildir:/mnt/mail/%d/%n > >> >> >> >> mail_max_userip_connections = 1000 > >> >> >> >> mail_plugins = " quota mailbox_alias" > >> >> >> >> mail_server_admin = mailto:support@ardaemail.com > >> >> >> >> mail_uid = ardaemail > >> >> >> >> maildir_stat_dirs = yes > >> >> >> >> namespace inbox { > >> >> >> >> inbox = yes > >> >> >> >> location = > >> >> >> >> mailbox Archive { > >> >> >> >> auto = subscribe > >> >> >> >> special_use = \Archive > >> >> >> >> } > >> >> >> >> mailbox Drafts { > >> >> >> >> auto = subscribe > >> >> >> >> special_use = \Drafts > >> >> >> >> } > >> >> >> >> mailbox Junk { > >> >> >> >> auto = subscribe > >> >> >> >> autoexpunge = 90 days > >> >> >> >> special_use = \Junk > >> >> >> >> } > >> >> >> >> mailbox Sent { > >> >> >> >> auto = subscribe > >> >> >> >> special_use = \Sent > >> >> >> >> } > >> >> >> >> mailbox Trash { > >> >> >> >> auto = subscribe > >> >> >> >> autoexpunge = 30 days > >> >> >> >> special_use = \Trash > >> >> >> >> } > >> >> >> >> prefix = > >> >> >> >> } > >> >> >> >> passdb { > >> >> >> >> args = /etc/dovecot/inc.d/inc.sql.conf > >> >> >> >> driver = sql > >> >> >> >> } > >> >> >> >> plugin { > >> >> >> >> last_login_dict = proxy::sql > >> >> >> >> last_login_key = # hidden, use -P to show it > >> >> >> >> last_login_precision = ms > >> >> >> >> mailbox_alias_new = Junk Email > >> >> >> >> mailbox_alias_new2 = Junk E-mail > >> >> >> >> mailbox_alias_new3 = Sent Messages > >> >> >> >> mailbox_alias_new4 = Sent Items > >> >> >> >> mailbox_alias_new5 = Deleted Items > >> >> >> >> mailbox_alias_new6 = Junk Mail > >> >> >> >> mailbox_alias_old = Junk > >> >> >> >> mailbox_alias_old2 = Junk > >> >> >> >> mailbox_alias_old3 = Sent > >> >> >> >> mailbox_alias_old4 = Sent > >> >> >> >> mailbox_alias_old5 = Trash > >> >> >> >> mailbox_alias_old6 = Junk > >> >> >> >> quota = dict:User Quota::proxy::quota > >> >> >> >> quota_exceeded_message = Mailbox is full and cannot receive any more > >> >> >> >> emails > >> >> >> >> quota_status_nouser = DUNNO > >> >> >> >> quota_status_success = DUNNO > >> >> >> >> quota_warning = bytes=95%% quota-warning 95 %u > >> >> >> >> quota_warning2 = bytes=85%% quota-warning 85 %u > >> >> >> >> quota_warning3 = bytes=75%% quota-warning 75 %u > >> >> >> >> sieve = dict:proxy::sieve > >> >> >> >> sieve_plugins = sieve_imapsieve sieve_extprograms > >> >> >> >> } > >> >> >> >> postmaster_address = postmaster(a)ardaemail.com > >> >> >> >> protocols = imap lmtp > >> >> >> >> service auth-worker { > >> >> >> >> group = ardaemail > >> >> >> >> user = ardaemail > >> >> >> >> } > >> >> >> >> service auth { > >> >> >> >> group = ardaemail > >> >> >> >> unix_listener /var/spool/postfix/private/auth { > >> >> >> >> group = postfix > >> >> >> >> mode = 0666 > >> >> >> >> user = postfix > >> >> >> >> } > >> >> >> >> unix_listener auth-userdb { > >> >> >> >> group = ardaemail > >> >> >> >> mode = 0666 > >> >> >> >> user = ardaemail > >> >> >> >> } > >> >> >> >> user = ardaemail > >> >> >> >> } > >> >> >> >> service imap-login { > >> >> >> >> inet_listener imap { > >> >> >> >> port = 0 > >> >> >> >> } > >> >> >> >> inet_listener imaps { > >> >> >> >> port = 993 > >> >> >> >> ssl = yes > >> >> >> >> } > >> >> >> >> process_min_avail = 8 > >> >> >> >> service_count = 0 > >> >> >> >> } > >> >> >> >> service imap { > >> >> >> >> vsz_limit = 4 G > >> >> >> >> } > >> >> >> >> service lmtp { > >> >> >> >> unix_listener /var/spool/postfix/private/dovecot-lmtp { > >> >> >> >> group = postfix > >> >> >> >> mode = 0666 > >> >> >> >> user = postfix > >> >> >> >> } > >> >> >> >> } > >> >> >> >> service pop3-login { > >> >> >> >> inet_listener pop3 { > >> >> >> >> port = 0 > >> >> >> >> } > >> >> >> >> inet_listener pop3s { > >> >> >> >> port = 0 > >> >> >> >> } > >> >> >> >> } > >> >> >> >> service quota-status { > >> >> >> >> executable = /usr/lib/dovecot/quota-status -p postfix > >> >> >> >> unix_listener /var/spool/postfix/private/quota-status { > >> >> >> >> user = postfix > >> >> >> >> } > >> >> >> >> } > >> >> >> >> service quota-warning { > >> >> >> >> executable = script /etc/dovecot/bin/quota-warning.sh > >> >> >> >> unix_listener quota-warning { > >> >> >> >> group = ardaemail > >> >> >> >> mode = 0666 > >> >> >> >> user = ardaemail > >> >> >> >> } > >> >> >> >> } > >> >> >> >> service submission-login { > >> >> >> >> inet_listener submission { > >> >> >> >> port = 0 > >> >> >> >> } > >> >> >> >> } > >> >> >> >> ssl = required > >> >> >> >> ssl_cert = </etc/letsencrypt/live/mail.ardaemail.com/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 { > >> >> >> >> args = /etc/dovecot/inc.d/inc.sql.conf > >> >> >> >> driver = sql > >> >> >> >> } > >> >> >> >> protocol imap { > >> >> >> >> imap_metadata = yes > >> >> >> >> mail_plugins = " quota mailbox_alias imap_sieve imap_quota last_login" > >> >> >> >> } > >> >> >> >> protocol lmtp { > >> >> >> >> mail_plugins = " quota mailbox_alias sieve” > >> >> >> >> } > >> >> >> >> > >> >> >> >> This output clearly does not include my Sieve configuration maps so > >> >> >> >> here’s those: > >> >> >> >> > >> >> >> >> connect = host=redacted dbname=redacted user=redacted password=redacted > >> >> >> >> > >> >> >> >> map { > >> >> >> >> pattern = priv/sieve/name/$script_name > >> >> >> >> table = mailboxFilter > >> >> >> >> username_field = email > >> >> >> >> value_field = uuid > >> >> >> >> fields { > >> >> >> >> name = $script_name > >> >> >> >> } > >> >> >> >> } > >> >> >> >> > >> >> >> >> map { > >> >> >> >> pattern = priv/sieve/data/$uuid > >> >> >> >> table = mailboxFilter > >> >> >> >> username_field = email > >> >> >> >> value_field = filter > >> >> >> >> fields { > >> >> >> >> uuid = $uuid > >> >> >> >> } > >> >> >> >> } > >> >> >> >> > >> >> >> >> And here’s the table schema: > >> >> >> >> > >> >> >> >> CREATE TABLE `mailboxFilter` ( > >> >> >> >> `id` int(11) unsigned NOT NULL AUTO_INCREMENT, > >> >> >> >> `uuid` varchar(36) NOT NULL, > >> >> >> >> `email` varchar(192) NOT NULL, > >> >> >> >> `name` varchar(255) NOT NULL, > >> >> >> >> `filter` longtext NOT NULL, > >> >> >> >> `isActive` bit(1) NOT NULL DEFAULT b’1’, > >> >> >> >> `createdAt` datetime NOT NULL DEFAULT current_timestamp(), > >> >> >> >> `updatedAt` datetime NOT NULL DEFAULT current_timestamp() ON UPDATE > >> >> >> >> current_timestamp(), > >> >> >> >> PRIMARY KEY (`id`), > >> >> >> >> UNIQUE KEY `UUID` (`uuid`), > >> >> >> >> UNIQUE KEY `EMAIL` (`email`) > >> >> >> >> ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8mb4 > >> >> >> >> COLLATE=utf8mb4_general_ci; > >> >> >> >> > >> >> >> >> When I run manually queries, everything works fine though I am not > >> >> >> >> entirely sure what the queries are that Dovecot is executing. > >> >> >> >> > >> >> >> >> Any help is appreciated! Also, if I could use the “isActive” field, that > >> >> >> >> would be great as well. My plan to start here is to only have one record > >> >> >> >> in the table per mailbox which would contain all Sieve filters. > >> >> >> >> Eventually, it would be nice if I could adjust the configuration to > >> >> >> >> allow for more than one that returns concatenated so any help there > >> >> >> >> would be great as well! > >> >> >> >> > >> >> >> >> Thank you! > >> >> >> >> _______________________________________________ > >> >> >> >> dovecot mailing list -- dovecot(a)dovecot.org > >> >> >> >> To unsubscribe send an email to dovecot-leave(a)dovecot.org > >> >> >> >_______________________________________________ > >> >> >> >dovecot mailing list -- dovecot(a)dovecot.org > >> >> >> >To unsubscribe send an email to dovecot-leave(a)dovecot.org > >> >> >> _______________________________________________ > >> >> >> dovecot mailing list -- dovecot(a)dovecot.org > >> >> >> To unsubscribe send an email to dovecot-leave(a)dovecot.org > >> >> _______________________________________________ > >> >> dovecot mailing list -- dovecot(a)dovecot.org > >> >> To unsubscribe send an email to dovecot-leave(a)dovecot.org > >> >_______________________________________________ > >> >dovecot mailing list -- dovecot(a)dovecot.org > >> >To unsubscribe send an email to dovecot-leave(a)dovecot.org > >> _______________________________________________ > >> dovecot mailing list -- dovecot(a)dovecot.org > >> To unsubscribe send an email to dovecot-leave(a)dovecot.org > >_______________________________________________ > >dovecot mailing list -- dovecot(a)dovecot.org > >To unsubscribe send an email to dovecot-leave(a)dovecot.org

2 2

sieve mail date change
by Marc 24 Jul '24

24 Jul '24

I am a bit rookie with sieve. Some time ago I created a sieve pipe that would sometimes alter alter the subject and move a message to a different mailbox. Currently this results in that a date changes of this message while I don't see anything in the source altering a date. What could be causing this and how to work around this?

2 2

Sieve Filters with MySQL
by Adam Miller 24 Jul '24

24 Jul '24

Me again! I am trying to get sieve filters working with a MySQL backend but same to be coming up short. Right now, the error I am getting received is: ------------------------------------------------------------------------------------------------------------------ "User has no active script in storage dict:proxy::sieve;user=username@domain.com" ------------------------------------------------------------------------------------------------------------------ The “username(a)domain.xn--com-9o0a is obviously the email address of the receiving mailbox. Here’s my latest config: # 2.3.16 (7e2e900c1a): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.16 (09c29328) # OS: Linux 6.5.0-1020-aws x86_64 Ubuntu 22.04.4 LTS nfs4 # Hostname: ec2-us-east-1a-arda-mail-001.ardaemail.com auth_debug = yes auth_mechanisms = plain login auth_verbose = yes auth_worker_max_count = 5 base_dir = /var/run/dovecot debug_log_path = /var/log/dovecot/debug.log default_internal_group = ardaemail default_internal_user = ardaemail dict { quota = mysql:/etc/dovecot/inc.d/inc.quota.user.sql.conf sieve = mysql:/etc/dovecot/inc.d/inc.sieve.sql.conf sql = mysql:/etc/dovecot/inc.d/inc.lastlogin.sql.conf } hostname = = mail.ardaemail.com info_log_path = /var/log/dovecot/info.log instance_name = ec2-us-east-1a-arda-mail-001.ardaemail.com listen = 172.16.0.200 log_path = /var/log/dovecot/general.log login_greeting = Welcome to ArdaEmail mail_debug = yes mail_gid = ardaemail mail_location = maildir:/mnt/mail/%d/%n mail_max_userip_connections = 1000 mail_plugins = " quota mailbox_alias" mail_server_admin = mailto:support@ardaemail.com mail_uid = ardaemail maildir_stat_dirs = yes namespace inbox { inbox = yes location = mailbox Archive { auto = subscribe special_use = \Archive } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe autoexpunge = 90 days special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe autoexpunge = 30 days special_use = \Trash } prefix = } passdb { args = /etc/dovecot/inc.d/inc.sql.conf driver = sql } plugin { last_login_dict = proxy::sql last_login_key = # hidden, use -P to show it last_login_precision = ms mailbox_alias_new = Junk Email mailbox_alias_new2 = Junk E-mail mailbox_alias_new3 = Sent Messages mailbox_alias_new4 = Sent Items mailbox_alias_new5 = Deleted Items mailbox_alias_new6 = Junk Mail mailbox_alias_old = Junk mailbox_alias_old2 = Junk mailbox_alias_old3 = Sent mailbox_alias_old4 = Sent mailbox_alias_old5 = Trash mailbox_alias_old6 = Junk quota = dict:User Quota::proxy::quota quota_exceeded_message = Mailbox is full and cannot receive any more emails quota_status_nouser = DUNNO quota_status_success = DUNNO quota_warning = bytes=95%% quota-warning 95 %u quota_warning2 = bytes=85%% quota-warning 85 %u quota_warning3 = bytes=75%% quota-warning 75 %u sieve = dict:proxy::sieve sieve_plugins = sieve_imapsieve sieve_extprograms } postmaster_address = postmaster(a)ardaemail.com protocols = imap lmtp service auth-worker { group = ardaemail user = ardaemail } service auth { group = ardaemail unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { group = ardaemail mode = 0666 user = ardaemail } user = ardaemail } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } process_min_avail = 8 service_count = 0 } service imap { vsz_limit = 4 G } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0666 user = postfix } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 0 } } service quota-status { executable = /usr/lib/dovecot/quota-status -p postfix unix_listener /var/spool/postfix/private/quota-status { user = postfix } } service quota-warning { executable = script /etc/dovecot/bin/quota-warning.sh unix_listener quota-warning { group = ardaemail mode = 0666 user = ardaemail } } service submission-login { inet_listener submission { port = 0 } } ssl = required ssl_cert = </etc/letsencrypt/live/mail.ardaemail.com/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 { args = /etc/dovecot/inc.d/inc.sql.conf driver = sql } protocol imap { imap_metadata = yes mail_plugins = " quota mailbox_alias imap_sieve imap_quota last_login" } protocol lmtp { mail_plugins = " quota mailbox_alias sieve” } This output clearly does not include my Sieve configuration maps so here’s those: connect = host=redacted dbname=redacted user=redacted password=redacted map { pattern = priv/sieve/name/$script_name table = mailboxFilter username_field = email value_field = uuid fields { name = $script_name } } map { pattern = priv/sieve/data/$uuid table = mailboxFilter username_field = email value_field = filter fields { uuid = $uuid } } And here’s the table schema: CREATE TABLE `mailboxFilter` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `uuid` varchar(36) NOT NULL, `email` varchar(192) NOT NULL, `name` varchar(255) NOT NULL, `filter` longtext NOT NULL, `isActive` bit(1) NOT NULL DEFAULT b’1’, `createdAt` datetime NOT NULL DEFAULT current_timestamp(), `updatedAt` datetime NOT NULL DEFAULT current_timestamp() ON UPDATE current_timestamp(), PRIMARY KEY (`id`), UNIQUE KEY `UUID` (`uuid`), UNIQUE KEY `EMAIL` (`email`) ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci; When I run manually queries, everything works fine though I am not entirely sure what the queries are that Dovecot is executing. Any help is appreciated! Also, if I could use the “isActive” field, that would be great as well. My plan to start here is to only have one record in the table per mailbox which would contain all Sieve filters. Eventually, it would be nice if I could adjust the configuration to allow for more than one that returns concatenated so any help there would be great as well! Thank you!

2 10

Key metrics to monitor for dovecot at CloudWatch
by Sivakumar Vadivel 24 Jul '24

24 Jul '24

Hello Team, Configured dovecot mail server and SES will receive and forward to SNS topic. Lambda subscribed to the topic and it will receive the mail and write to the EFS volume. EFS volume mounted on both dovecot and lambda. Also enabled AWS Cloudwatch to monitor overall infra. I'm going to enable anomaly detection at Cloudwatch and I want to know the list of key metrics to monitor. I'm thinking of the following metrics. 1. No of bounce 2. PublishFailed & Success 3. EFS disk storage Please suggest the other key metrics, so that I can enable anomaly detection to understand and create the cloudwatch alarm.

1 0

Dovecot Stats Plugin
by Adam Miller 23 Jul '24

23 Jul '24

Hello again everyone! I am trying to get the “doveadm stats dump” command to work and even though it does not error, there are no stats. When I try to enable the stats, I get the following error: “Error: Plugin 'stats' not found from directory /usr/lib/dovecot/modules” which is correct, the “stats” plugin does not exist. I do have “/usr/lib/dovecot/stats”. Here’s my configuration: Dovecot Version: 2.3.16 Operating System: Ubuntu 22.04.1 Packages Installed: - dovecot-antispam - dovecot-core - dovecot-imapd - dovecot-lmtpd - dovecot-mysql - dovecot-pop3d - dovecot-sieve Packages Available: - dovecot-auth-lua - dovecot-dev - dovecot-fts-xapian - dovecot-gssapi - dovecot-ldap - dovecot-lucene - dovecot-managesieved - dovecot-pgsql - dovecot-solr - dovecot-sqlite - dovecot-submissiond Dovecot Configuration (without stats enabled): # 2.3.16 (7e2e900c1a): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.16 (09c29328) # OS: Linux 6.5.0-1020-aws x86_64 Ubuntu 22.04.4 LTS nfs4 # Hostname: ec2-us-east-1a-arda-mail-001.ardaemail.com auth_mechanisms = plain login auth_worker_max_count = 5 base_dir = /var/run/dovecot debug_log_path = /var/log/dovecot/debug.log default_internal_group = ardaemail default_internal_user = ardaemail dict { quota = mysql:/etc/dovecot/inc.d/inc.quota.user.sql.conf } hostname = = mail.ardaemail.com info_log_path = /var/log/dovecot/info.log instance_name = ec2-us-east-1a-arda-mail-001.ardaemail.com listen = 172.16.0.200 log_path = /var/log/dovecot/general.log login_greeting = Welcome to ArdaEmail mail_gid = ardaemail mail_location = maildir:/mnt/mail/%d/%n mail_max_userip_connections = 1000 mail_plugins = " quota mailbox_alias" mail_uid = ardaemail maildir_stat_dirs = yes namespace inbox { inbox = yes location = mailbox Archive { auto = subscribe special_use = \Archive } mailbox Drafts { auto = no special_use = \Drafts } mailbox Junk { auto = no autoexpunge = 90 days special_use = \Junk } mailbox SPAM { auto = subscribe autoexpunge = 90 days } mailbox Sent { auto = no special_use = \Sent } mailbox Trash { auto = no autoexpunge = 30 days special_use = \Trash } prefix = } passdb { args = /etc/dovecot/inc.d/inc.sql.conf driver = sql } plugin { imapsieve_mailbox1_before = file:/etc/dovecot/sieve.d/spam/learn-spam.sieve imapsieve_mailbox1_causes = COPY imapsieve_mailbox1_name = Junk imapsieve_mailbox2_before = file:/etc/dovecot/sieve.d/spam/learn-ham.sieve imapsieve_mailbox2_causes = COPY imapsieve_mailbox2_from = Junk imapsieve_mailbox2_name = * mailbox_alias_new = Junk Email mailbox_alias_new2 = Junk E-mail mailbox_alias_new3 = Sent Messages mailbox_alias_new4 = Sent Items mailbox_alias_new5 = Deleted Items mailbox_alias_old = Junk mailbox_alias_old2 = Junk mailbox_alias_old3 = Sent mailbox_alias_old4 = Sent mailbox_alias_old5 = Trash quota = dict:User Quota::proxy::quota quota_exceeded_message = Mailbox is full and cannot receive any more emails quota_status_nouser = DUNNO quota_status_success = DUNNO quota_warning = bytes=95%% quota-warning 95 %u quota_warning2 = bytes=85%% quota-warning 85 %u quota_warning3 = bytes=75%% quota-warning 75 %u recipient_delimiter = + sieve_after = /etc/dovecot/sieve.d/after/ sieve_before = /etc/dovecot/sieve.d/before/ sieve_extensions = +spamtest +spamtestplus +virustest +notify +imapflags sieve_global_extensions = +vnd.dovecot.pipe sieve_pipe_bin_dir = /etc/dovecot/sieve sieve_plugins = sieve_imapsieve sieve_extprograms sieve_quota_max_storage = 0 sieve_spamtest_max_header = X-Spamd-Result: -?[[:digit:]]+\.[[:digit:]]+ / (-?[[:digit:]]+\.[[:digit:]]) sieve_spamtest_status_header = X-Spamd-Result: (-?[[:digit:]]+\.[[:digit:]]+) / -?[[:digit:]]+\.[[:digit:]] sieve_spamtest_status_type = score } postmaster_address = postmaster(a)ardaemail.com protocols = imap lmtp service auth-worker { group = ardaemail user = ardaemail } service auth { group = ardaemail unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { group = ardaemail mode = 0666 user = ardaemail } user = ardaemail } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } process_min_avail = 8 service_count = 0 } service imap { vsz_limit = 4 G } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0666 user = postfix } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 0 } } service quota-status { executable = /usr/lib/dovecot/quota-status -p postfix unix_listener /var/spool/postfix/private/quota-status { user = postfix } } service quota-warning { executable = script /etc/dovecot/bin/quota-warning.sh unix_listener quota-warning { group = ardaemail mode = 0666 user = ardaemail } } service submission-login { inet_listener submission { port = 0 } } ssl = required ssl_cert = </etc/letsencrypt/live/mail.ardaemail.com/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 { args = /etc/dovecot/inc.d/inc.sql.conf driver = sql } protocol imap { mail_plugins = " quota mailbox_alias imap_sieve imap_quota" } protocol lmtp { mail_plugins = " quota mailbox_alias sieve" } The “stats” plugin does not seem to be found anywhere from my searching. Any help is greatly appreciated. I would like to be able to turn on the INET listener to hit the stats via an HTTP request. Thank you!

3 7

Dovecot proxy/director/replicator upgrade path
by Andrea Gabellini 23 Jul '24

23 Jul '24

Hello, I manage a Dovecot installation version 2.3.4.1 with a pair of proxy/director in front and two backends that use the replicator plugin to synchronize emails between them. I would like to update all 4 machines and would like to understand if I can directly jump to the latest version 2.3.21 and if there is a logical sequence to follow, such as updating the backends first and then the frontends or vice versa. Thanks, Andrea -- __________________________ E-mail Signatures are usually made to compensate for the boring contents of the letter. __________________________ TIM San Marino S.p.A. Andrea Gabellini Engineering R&D TIM San Marino S.p.A. - https://www.telecomitalia.sm Via Ventotto Luglio, 212 - Piano -2 47893 - Borgo Maggiore - Republic of San Marino Tel: (+378) 0549 886237 Fax: (+378) 0549 886188 -- Informativa Privacy Questa email ha per destinatari dei contatti presenti negli archivi di TIM San Marino S.p.A.. Tutte le informazioni vengono trattate e tutelate nel rispetto della normativa vigente sulla protezione dei dati personali (Reg. EU 2016/679). Per richiedere informazioni e/o variazioni e/o la cancellazione dei vostri dati presenti nei nostri archivi potete inviare una email a privacy(a)telecomitalia.sm. Avviso di Riservatezza Il contenuto di questa e-mail e degli eventuali allegati e' strettamente confidenziale e destinato alla/e persona/e a cui e' indirizzato. Se avete ricevuto per errore questa e-mail, vi preghiamo di segnalarcelo immediatamente e di cancellarla dal vostro computer. E' fatto divieto di copiare e divulgare il contenuto di questa e-mail. Ogni utilizzo abusivo delle informazioni qui contenute da parte di persone terze o comunque non indicate nella presente e-mail potra' essere perseguito ai sensi di legge.

1 0

Seeking Guidance on Dovecot Configuration, Security, and Performance Optimization
by Selena Thomas 23 Jul '24

23 Jul '24

Hi everyone, I am setting up Dovecot for the first time and could use some guidance. I have a couple of questions::- -Configuration Basics: What are the essential configuration files I need to focus on for a basic setup: ?? -Security Best Practices: What steps should I take to ensure my Dovecot server is secure, especially regarding -authentication and SSL/TLS: ?? -Performance Tuning: Are there any tips for optimizing performance for a small to medium-sized deployment: ?? I appreciate any advice or resources you can point me towards. Thanks in advance for your help! With Regards, Selena [flutter/https://www.igmguru.com/digital-marketing-programming/flutter-train…]

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Seeking Guidance on Dovecot Configuration, Security, and Performance Optimization
by Selena Thomas 23 Jul '24

23 Jul '24

Hi everyone, I am setting up Dovecot for the first time and could use some guidance. I have a couple of questions::- -Configuration Basics: What are the essential configuration files I need to focus on for a basic setup: ?? -Security Best Practices: What steps should I take to ensure my Dovecot server is secure, especially regarding -authentication and SSL/TLS: ?? -Performance Tuning: Are there any tips for optimizing performance for a small to medium-sized deployment: ?? I appreciate any advice or resources you can point me towards. Thanks in advance for your help! With Regards, Selena https://www.igmguru.com/digital-marketing-programming/flutter-training/

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Seeking Guidance on Dovecot Configuration, Security, and Performance Optimization
by Selena Thomas 23 Jul '24

23 Jul '24

Hi everyone, I am setting up Dovecot for the first time and could use some guidance. I have a couple of questions::- -Configuration Basics: What are the essential configuration files I need to focus on for a basic setup: ?? -Security Best Practices: What steps should I take to ensure my Dovecot server is secure, especially regarding -authentication and SSL/TLS: ?? -Performance Tuning: Are there any tips for optimizing performance for a small to medium-sized deployment: ?? I appreciate any advice or resources you can point me towards. Thanks in advance for your help! With Regards, Selena [https://www.igmguru.com/digital-marketing-programming/flutter-training/flut…]

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auth-worker doesn't systematically log the IP
by Yassine Chaouche 23 Jul '24

23 Jul '24

Dear list, look at this grep auth-worker | nl output from my dovecot log : 166 Jul 22 15:49:47 auth-worker(24409): Info: sql(hakim.boukhadra(a)domain.tld): unknown user 167 Jul 22 15:49:47 auth-worker(13026): Info: sql(prtg(a)domain.tld): unknown user 168 Jul 22 15:53:00 auth-worker(13026): Info: sql(feriel.abbas(a)domain.tld,10.10.10.19): Password mismatch 169 Jul 22 15:53:15 auth-worker(13026): Info: sql(feriel.abbas(a)domain.tld,10.10.10.19): Password mismatch 170 Jul 22 15:55:26 auth-worker(13026): Info: sql(it_sys(a)domain.tld): unknown user 171 Jul 22 15:59:30 auth-worker(13026): Info: sql(radioaintemouchent.domain.tld,10.10.10.19): unknown user 172 Jul 22 15:59:43 auth-worker(13026): Info: sql(mouadoussama(a)radioalgerie.dz): unknown user 173 Jul 22 16:00:38 auth-worker(13026): Info: sql(it_mam(a)domain.tld): unknown user 174 Jul 22 16:00:58 auth-worker(13026): Info: sql(it_mam(a)domain.tld): unknown user 175 Jul 22 16:02:01 auth-worker(13026): Info: sql(it_mam(a)domain.tld): unknown user 176 Jul 22 16:09:35 auth-worker(13026): Info: sql(it_mam(a)domain.tld): unknown user 177 Jul 22 16:09:42 auth-worker(13026): Info: sql(prtg(a)domain.tld): unknown user 178 Jul 22 16:10:11 auth-worker(13026): Info: sql(it_mam(a)domain.tld): unknown user 179 Jul 22 16:15:37 auth-worker(13026): Info: sql(it_sys(a)domain.tld): unknown user 180 Jul 22 16:26:55 auth-worker(13026): Info: sql(it_mam(a)domain.tld): unknown user 181 Jul 22 16:32:01 auth-worker(13026): Info: sql(it_mam(a)domain.tld): unknown user 182 Jul 22 16:35:37 auth-worker(19555): Info: sql(it_sys(a)domain.tld): unknown user As you can see, sometimes the IP addresses of the dubious login attempts are noted, other times this crucial piece of evidence is conspicuously absent. I am wondering what is the source of all those login attempts? or could those be mere username lookups instead to test for mail deliverability? Many thanks, -- yassine -- sysadm +213-779 06 06 23 http://about.me/ychaouche Looking for side gigs.

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Missing IMAP METADATA Plugin
by Adam Miller 20 Jul '24

20 Jul '24

OS: Ubuntu 22.04.1 Dovecot: 2.3.16 (7e2e900c1a) When trying to enable the “imap_metadata” plugin, I get the following error: Plugin 'imap_metadata' not found from directory /usr/lib/dovecot/modules I have searched high and low via Google, StackOverflow and even ChatGPT (haha) but I cannot seem to find the package that provides the plugin. Does Dovecot have to be built from source for this plugin to be included? Any help is appreciated. Thank you!

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doveadm: SSL handshake failed - wrong version number
by Rachel Roch 19 Jul '24

19 Jul '24

When attempting a doveadm backup, e.g. : doveadm -D backup -Ru user tcp:foo.example.com:12345 I am getting the following error : Error: SSL handshake failed: SSL_accept() failed: error:0A00010B:SSL routines::wrong version number There is nothing wrong with my SSL config because, e.g. openssl s_client -connect localhost:993 works on the source host. So I don't know why doveadm doesn't work. My SSL config is: ssl = required ssl_cert = </etc/ssl/foo.example.com.pem ssl_key = </etc/ssl/foo.example.com.priv ssl_client_ca_dir = /etc/ssl/certs ssl_min_protocol = TLSv1.2 ssl_prefer_server_ciphers = yes 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 service doveadm { inet_listener { port = 12345 ssl = yes } }

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dovecot.list.index.log
by Joan Moreau 19 Jul '24

19 Jul '24

HI Is it safe to delete the file dovecot.list.index.log (as I am still struggling with using any protocol for network storage of the emails (dbox), and now dovecot complains that my dovecot.list.index.log is corrupted) Thank you

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AD authentication with dovecot not working.
by hkhk_exact10 19 Jul '24

19 Jul '24

Hi All, I am trying to setup AD auth with dovecot and have tried a lot of options but still no success. I am using a bind account for AD authentication and the users are not posix accounts. I am not using the ssl cert as its not available, so disabling it. I have used the similar settings with saslauthd+postfix and it worked, not sure what am I doing wrong with configurations.. My configuration is as follows: # dovecot --version 2.3.16 (7e2e900c1a) # dovecot -n # 2.3.16 (7e2e900c1a): /etc/dovecot/dovecot.conf # OS: Linux 5.14.0-474.el9.x86_64 x86_64 CentOS Stream release 9 # Hostname: mail-centos.example.com auth_mechanisms = plain login first_valid_uid = 1000 listen = * mail_location = maildir:~/Maildir 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 { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } } service pop3-login { process_limit = 500 } service submission-login { inet_listener submission { port = 587 } } ssl_cert = </etc/ssl/example.com/server.pem ssl_cipher_list = PROFILE=SYSTEM ssl_key = # hidden, use -P to show it userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } ------------------ # cat /etc/dovecot/dovecot-ldap.conf.ext uris = ldaps://10.1.85.11 dn = CN=s_linux_bind,OU=Global,OU=Services,OU=Accounts,OU=root,DC=example,DC=com dnpass = xxxxx auth_bind = yes tls_require_cert = never debug_level = 1 ldap_version = 3 base = dc=example,dc=com scope = subtree deref = never user_filter = (&(objectClass=user)(sAMAccountName=%u)) --------------- Error logs: dovecot[6600]: auth: Error: ** ld 0x556695138d90 Outstanding Requests: dovecot[6600]: auth: Error: * msgid 2, origid 2, status RequestCompleted dovecot[6600]: auth: Error: outstanding referrals 2, parent count 2 dovecot[6600]: auth: Error: * msgid 3, origid 2, status InProgress dovecot[6600]: auth: Error: outstanding referrals 0, parent count 2 dovecot[6600]: auth: Error: * msgid 5, origid 2, status InProgress dovecot[6600]: auth: Error: outstanding referrals 0, parent count 1 dovecot[6600]: auth: Error: ld 0x556695138d90 request count 3 (abandoned 0) dovecot[6600]: auth: Error: ** ld 0x556695138d90 Response Queue: dovecot[6600]: auth: Error: Empty dovecot[6600]: auth: Error: ld 0x556695138d90 response count 0 dovecot[6600]: auth: Error: ldap_chkResponseList ld 0x556695138d90 msgid -1 all 0 dovecot[6600]: auth: Error: ldap_chkResponseList returns ld 0x556695138d90 NULL dovecot[6600]: auth: Error: ldap_int_select postfix/submission/smtpd[6602]: warning: unknown[10.1.70.75]: SASL LOGIN authentication failed: Connection lost to authentication server postfix/submission/smtpd[6602]: disconnect from unknown[10.1.70.75] ehlo=2 starttls=1 auth=0/1 quit=1 commands=4/5 Attaching the detailed error logs. --------- saslauthd settings which worked: # cat /etc/saslauthd.conf ldap_servers: ldaps://10.1.85.11 ldap_search_base: dc=wtg,dc=zone ldap_filter: (sAMAccountName=%u) ldap_bind_dn: CN=s_linux_bind,OU=Global,OU=Services,OU=Accounts,OU=root,DC=example,DC=com ldap_password: xxxx ldap_tls_reqcert: never Regards, Sandeep

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