- dovecot - dovecot.org

Using a DICT PROXY with SQL for AUTH
by dovecot＠ptld.com 02 Sep '21

02 Sep '21

https://doc.dovecot.org/configuration_manual/dict/#dict-sql https://doc.dovecot.org/configuration_manual/dict/#dict-proxy https://doc.dovecot.org/configuration_manual/dict/proxy/ I can't get the complete picture from these pages how to implement proxy with sql. I have direct sql setup now, how do i use this with proxy? passdb { driver = sql args = /etc/dovecot/mysql_login } userdb { driver = prefetch } /etc/dovecot/mysql_login: driver = mysql connect = host=/var/lib/mysql/mysql.sock dbname=redacted user=redacted password=redacted default_pass_scheme = redacted password_query = SELECT ... I feel like there is a disconnect. It says how to make a proxy service with service dict{} and it says put a dict name but where? And how do i connect my password_query to a dict? Or can you not use the proxy service for auth service? "The <destination dict> contains the dict name in the dict { .. } settings" service dict(1) { unix_listener dict(2) { mode = 0600 user = vmail } } What is the dict name, the first dict(1) or the second dict(2) or neither? Can you change "dict" in the service or unix_listner or does it always have to be "dict"? Can you use dict-async with sql?

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Over Quota Reply Codes
by dovecot＠ptld.com 02 Sep '21

02 Sep '21

Dovecot quota plugin returns code 554 5.2.2 when a user inbox is full. Why 554 (transaction failed) instead of 552 (exceeded storage allocation)? Im curious behind the logic as im trying to determine the best code to use to reject a user sending more emails than their number-of-emails-limit quota. If anyone has an option to share on the best code to return it would be appreciated; 550 (policy reasons) 552 (exceeded ... allocation) 554 (transaction failed) 5.2.2 (mailbox full) 5.5.3 (Too many recipients) 5.7.0 (Other security related) 5.7.1 (delivery not authorized) Which fits best?

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maildirfolder file created in maildir root during auto-creation with 2.3.4.1 but not 2.2.27
by Christian Balzer 02 Sep '21

02 Sep '21

Hello, as the tin says. I have several servers running 2.2.27 (Debian stretch) and am adding new ones with 2.3.4.1 (Debian buster). The configs were upgraded where needed but neither 10-mail.conf nor 15-mailboxes.conf were changed. 15-mailboxes is all commented out (I guess the default is auto-create, which isn't documented anywhere I could find) and the only non-comments in 10-mail.conf are --- mail_location = maildir:%h mail_privileged_group = mail --- So yes, no namespaces are explicitly defined/declared. The 2.3.4.1 version wrongly creates a maildirfolder file in the home directory (maildir root), preventing exim from correctly creating/using maildirsize. a) Is this expected behavior and can it be changed? b) How can I disable inbox auto-creation if a) doesn't pan out? Thanks, Christian -- Christian Balzer Network/Systems Engineer chibi(a)gol.com Rakuten Mobile Inc.

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Duplicate plugins - FTS Xapian
by Joan Moreau 01 Sep '21

01 Sep '21

Hi There seems to be 2 plugins doing the same thins - https://github.com/slusarz/dovecot-fts-flatcurve/ - https://github.com/grosjo/fts-xapian/ (mine) Both are in the doc of dovecot https://doc.dovecot.org/configuration_manual/fts/ I am currently working hard to push it to RPM package, and plugin is already approved by ArchLinux and Debian Isn't there double work here ? Thanks JM

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User deleted the folder
by Казанцев Владимир Серге евич 01 Sep '21

01 Sep '21

Hello, please tell me what kind of information is stored in this file: doveadm dump -t mailboxlog dovecot.mailbox.log -- С уважением, Казанцев Владимир Сергеевич системный администратор отдела ИТ АО «Елецгидроагрегат» Тел. +7 (47467) 78-1-16, Моб. +7 980 263 26 69 kazantsev.vs(a)gidroagregat.ru <mailto:kazantsev.vs@gidroagregat.ru> /Настоящее почтовое сообщение является собственностью АО «Елецгидроагрегат», конфиденциально и предназначено для получателя письма. Если Вы не являетесь получателем, вероятнее всего Вы получили письмо по ошибке и в этом случае любое его использование, перенаправление, вывод на печать или копирование данного сообщения запрещаются. Если Вы получили сообщение по ошибке, пожалуйста свяжитесь с отправителем письма. Любые взгляды или мнения, представленные в письме, могут не совпадать с точкой зрения АО «Елецгидроагрегат» и отражают только точку зрения отправителя. Однако настоящее почтовое сообщение и любые вложения в него не содержат вирусов или каких-то других недостатков, которые могли бы причинить вред Вашей системе; тем не менее, АО «Елецгидроагрегат» не несет никакой ответственности за причинение ущерба результате получения данного письма./

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User deleted the folder
by Казанцев Владимир Серге евич 01 Sep '21

01 Sep '21

Hello, please tell me what kind of information is stored in this file: doveadm dump -t mailboxlog dovecot.mailbox.log -- С уважением, Казанцев Владимир Сергеевич системный администратор отдела ИТ АО «Елецгидроагрегат» Тел. +7 (47467) 78-1-16, Моб. +7 980 263 26 69 kazantsev.vs(a)gidroagregat.ru <mailto:kazantsev.vs@gidroagregat.ru> /Настоящее почтовое сообщение является собственностью АО «Елецгидроагрегат», конфиденциально и предназначено для получателя письма. Если Вы не являетесь получателем, вероятнее всего Вы получили письмо по ошибке и в этом случае любое его использование, перенаправление, вывод на печать или копирование данного сообщения запрещаются. Если Вы получили сообщение по ошибке, пожалуйста свяжитесь с отправителем письма. Любые взгляды или мнения, представленные в письме, могут не совпадать с точкой зрения АО «Елецгидроагрегат» и отражают только точку зрения отправителя. Однако настоящее почтовое сообщение и любые вложения в него не содержат вирусов или каких-то других недостатков, которые могли бы причинить вред Вашей системе; тем не менее, АО «Елецгидроагрегат» не несет никакой ответственности за причинение ущерба результате получения данного письма./

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indexer crash
by Onno Molenkamp 31 Aug '21

31 Aug '21

Hi, Because I was getting segfaults in libc in calloc calls by the indexer process of Dovecot 2.3.16, I ran indexer with valgrind to look for possible memory corruption. It did indeed find that indexer was accessing memory that had already been freed, I've attached the log file. I've then tried running Dovecot with the fix in commit 97367ef61784a364ccf615cb816be6492329050d, but that didn't make any difference. Reverting (just the code in src/indexer) to the last revision before the recent rewrite to use connection.c (d76761698a06bab60a741c6794252fddec4292ef) did: valgrind doesn't log any errors anymore, and indexer has stopped crashing. Onno

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Dovecot Director: Preferred backend server
by Steven Varco 31 Aug '21

31 Aug '21

Hi All I have a dovecot cluster with directror and two IMAP Servers behind. Since they are in geographical different locations I would like to have users to go to a specific IMAP backend server (if both are up) and only switch to the other if one goes down (failover). As to my current knowledge the PassDB extra field „host=„ is not suitable in this case as it would never route the client to a different backend, even if the „user specific backend“ would be down. Is their a way in dovecot to achive this? As far as I searched the documentation I could not find any information on this so far. If not, it may also help if I could get certain users to „initially" go to a specific backend (since director usually routes a client/user to the same backend server it initially connects) and therefore it would be interesting to know how dovecot director chooses wether a user goes to server1 or server2? And if a client already gets to server2, how to bring it „back“ to server1? thanks in advance, Steven -- https://steven.varco.ch/ https://www.tech-island.com/

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lmtp panic with 2.3.16 (runnung ubuntu) and larger mails
by Friedhelm Buescher 30 Aug '21

30 Aug '21

Hi, when sending larger Mails (> 1MB, for example a jpg attachment), the lmtp crashes: ######################################################################### syslog: Aug 29 17:05:34 mail dovecot: lmtp(xxxx)<720677><5RuZHDCiK2El/woAkAJtwA>: Panic: Buffer write out of range (0 + 1) Aug 29 17:05:34 mail dovecot: lmtp(xxxx)<720677><5RuZHDCiK2El/woAkAJtwA>: Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x41) [0x7f10ae1fb151] -> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x22) [0x7f10ae1fb272] -> /usr/lib/dovecot/libdovecot.so.0(+0x1092eb) [0x7f10ae2082eb] -> /usr/lib/dovecot/libdovecot.so.0(+0x109387) [0x7f10ae208387] -> /usr/lib/dovecot/libdovecot.so.0(+0x5d018) [0x7f10ae15c018] -> /usr/lib/dovecot/libdovecot.so.0(+0x5bee1) [0x7f10ae15aee1] -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_binary_emit_integer+0x6a) [0x7f10ad79dfea] -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_binary_save+0x1e3) [0x7f10ad79c553] -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_binary_file_update_resource_usage+0x128) [0x7f10ad79dcc8] -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_binary_close+0x7d) [0x7f10ad79ab4d] -> /usr/lib/dovecot/modules/lib90_sieve_plugin.so(+0x3f65) [0x7f10ae0f3f65] -> /usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver+0x17a) [0x7f10ae4490ea] -> dovecot/lmtp(lmtp_local_default_deliver+0x1d8) [0x557cc4da83c8] -> dovecot/lmtp(lmtp_local_data+0x5ac) [0x557cc4da8b1c] -> dovecot/lmtp(client_default_cmd_data+0x191) [0x557cc4da74a1] -> dovecot/lmtp(cmd_data_continue+0x180) [0x557cc4da7230] -> /usr/lib/dovecot/libdovecot.so.0(+0x7c286) [0x7f10ae17b286] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x6d) [0x7f10ae21e67d] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x145) [0x7f10ae21fd15] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x54) [0x7f10ae21e724] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x40) [0x7f10ae21e890] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x17) [0x7f10ae1913a7] -> dovecot/lmtp(main+0x22f) [0x557cc4da5edf] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f10adf250b3] -> dovecot/lmtp(_start+0x2e) [0x557cc4da5fee] Aug 29 17:05:34 mail dovecot: lmtp(xxxx)<720677><5RuZHDCiK2El/woAkAJtwA>: Fatal: master: service(lmtp): child 720677 killed with signal 6 (core dumped) ######################################################################### uname -a Linux mail 5.4.0-81-generic #91-Ubuntu SMP Thu Jul 15 19:09:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux Installed Packages: dovecot-lmtpd=2:2.3.16-2+ubuntu20.04 dovecot-mysql=2:2.3.16-2+ubuntu20.04 dovecot-imapd=2:2.3.16-2+ubuntu20.04 dovecot-sieve=2:2.3.16-2+ubuntu20.04 dovecot-pop3d=2:2.3.16-2+ubuntu20.04 dovecot-lucene=2:2.3.16-2+ubuntu20.04 dovecot-core=2:2.3.16-2+ubuntu20.04 dovecot-managesieved=2:2.3.16-2+ubuntu20.04 dovecot-solr=2:2.3.16-2+ubuntu20.04 postfix=3.4.13-0ubuntu1.1 Tried to downgrade to dovecot-lmtpd=2:2.3.15-1+ubuntu20.04 dovecot-mysql=2:2.3.15-1+ubuntu20.04 dovecot-imapd=2:2.3.15-1+ubuntu20.04 dovecot-sieve=2:2.3.15-1+ubuntu20.04 dovecot-pop3d=2:2.3.15-1+ubuntu20.04 dovecot-lucene=2:2.3.15-1+ubuntu20.04 dovecot-core=2:2.3.15-1+ubuntu20.04 dovecot-managesieved=2:2.3.15-1+ubuntu20.04 dovecot-solr=2:2.3.15-1+ubuntu20.04 postfix=3.4.10-1ubuntu1 , which does not solve the error. ######################################################################### config: # 2.3.16 (7e2e900c1a): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.16 (09c29328) # OS: Linux 5.4.0-81-generic x86_64 Ubuntu 20.04.3 LTS ext4 # Hostname: xxxx auth_verbose_passwords = plain lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_location = maildir:/var/maildirs/%u mail_plugins = " quota acl fts fts_solr" 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 { list = children location = maildir:%%h:INDEX=%h/shared/%%u:CONTROL=%h/shared/%%u prefix = shared.%%u. separator = . subscriptions = no type = shared } namespace inbox { inbox = yes location = prefix = separator = . type = private } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { acl = vfile fts = solr fts_autoindex = yes fts_solr = url=http://127.0.0.1:8983/solr/dovecot/ recipient_delimiter = . sieve = file:~/sieve;active=~/.dovecot.sieve } protocols = " imap lmtp sieve pop3" recipient_delimiter = . service auth-worker { user = $default_internal_user } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = postfix user = postfix } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0660 user = postfix } vsz_limit = 1 G } ssl = required ssl_cert = </etc/letsencrypt/live/xxx/fullchain.pem ssl_cipher_list = ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA 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/dovecot-sql.conf.ext driver = sql } protocol lmtp { mail_plugins = " quota acl fts fts_solr sieve notify push_notification" postmaster_address = postmaster@xxx } protocol lda { mail_plugins = " quota acl fts fts_solr sieve fts fts_solr notify push_notification" } protocol imap { mail_plugins = quota imap_quota fts fts_solr } ######################################################################### sieve-file involved: # Sieve Filter # Generated by Ingo (http://www.horde.org/apps/ingo/) (05/17/2019, 06:17:18 PM) require ["fileinto", "imap4flags", "mailbox", "subaddress", "envelope", "variables", "body", "regex", "copy"]; # PDFs nach attachments speichern, damit diese lokal gespeichert werden koennen .. if body :raw :regex ["filename=.+\\.pdf"] { fileinto :create :copy "INBOX.attachments"; }

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Local auth works with dovecot-proxy, remote does not
by Camilo Sperberg 30 Aug '21

30 Aug '21

Hi list! I've configured dovecot-proxy to redirect users to another server if their data is indeed on that other server. Webmail (which runs on the same machine) works perfectly fine, but clients such as Thunderbird and Outlook do not work as intended, I suspect it to be a problem with the IP that dovecot-proxy sees, but I can't figure out what is wrong: I've already done a lot of Googling and also tried to change the login_trusted_networks value, but to no avail. I've enabled debug log and here is the relevant part of a call that fails and another one that succeeds (FYI 10.164.0.3 is the machine that is doing the proxying and where webmail is located, 10.164.0.20 is the 'node', these logs come from that node, doveconf -n is also provided in the gist): https://gist.github.com/unreal4u/64de0f05b6e3b98034cdb0ae52ce1196 So as far as I can interpret the logs, in the failure case it is basically saying it should go to the node, despite it already being on that node: Aug 24 11:29:07 mail-node-2 dovecot: auth: Debug: client passdb out: OK#0112#011user=me(a)XXXXXX.XX #011host=10.164.0.20#011port=143#011proxy#011pass=<hidden> In the success case, I don't see any mention of a proxy: Aug 24 11:35:21 mail-node-2 dovecot: auth: Debug: client passdb out: OK#0116#011user=me(a)XXXXXXXXX.XX What am I missing here? Has this something to do with authentication-allow-nets or authentication-allow-real-nets ? If so: where to define it? Is there something else I'm missing? Thanks in advance for your help, Camilo Sperberg

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