- dovecot - dovecot.org

Re: Dovecot quota and Postfix smtpd_recipient_restrictions?
by Davide Marchi 21 Mar '19

21 Mar '19

> From: Urban Loesch <bind(a)enas.net> > Hi, > >> Well, >> >> so the right syntax (in my case) would be: >> >> -o smtpd_recipient_restrictions = >> reject_non_fqdn_recipient,reject_unknown_recipient_domain,permit_sasl_authenticated,reject,check_policy_service >> inet:mailstore.example.com:12340 >> >> right?? > I configured it before the "permit_sasl_authenticated" and the "reject" > statement. > >> >> And eventually, should you suggest me how made some functional >> verification test? > According to: http://www.postfix.org/SMTPD_POLICY_README.html try on > your postfix: > > telnet mailstore.example.com 12340 > > and insert the following lines: > > sender=somesender(a)somedomain.com > recipient=your(a)recipient.com > size=12345 > [empty line] > > > Set a size= in bytes which is greater that your configured quota. > In theory the policy service should respond with your configured error > message "552 5.2.2 Mailbox is full". > > Example on my server: > > ... > sender=postmaster(a)somedomain.com > recipient=my(a)recipient.com > size=123450000000 > > action=552 5.2.2 Mailbox is full > ... > > > For a livetest reduce the quota of your testaccount to ex. 100KB and > the send a mail > 100BK from outside to it. You should see the "552" > error > message in your logs and you should get back a bouncemail from the > sending server. > > Hope I explained it correct. > > Best > Urban WAW! Very very clear your example! Thanks again Urban, you are a friend ;-) I will try... Thanks again to all! Davide -- cosmogoniA n o p r o v a r e n o f a r e o n o n f a r e n o n c e p r o v a r e

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imap ---- LIST "" * The returned mailbox does not display quotes
by lty 21 Mar '19

21 Mar '19

dovecot version v2.2.29 v2.2.36 v2.3.5 LIST "" * The returned mailbox does not display quotes dovecot version v2.1.17 LIST "" * The returned mailbox shows quotation marks Why is the quotation mark removed in the new version? Is there any configuration option in the new version to add quotes? Because I see a lot of big public mailboxes with quotation marks.

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Dovecot crashing when attempting to search in virtual folder with fts_squat activated
by benjamin＠godbersen.info 20 Mar '19

20 Mar '19

Hi everyone, I am running into a problem when trying to use fts_squat in a virtual folder. Without fts_squat plugin the search (from, subject...) works in all folders. With activated fts the search on the inbox folders works expectedly well but any attempt to search anything in any virtual folder leads to the following error. Similarly when attempting "doveadm fts lookup". I also noticed that no search index for the virtual folders gets build - is this expected behaviour? Mar 14 23:14:58 *** dovecot: service=imap, user=***, ip=[::1]. Panic: file mail-storage.c: line 1913 (mailbox_get_open_status): assertion failed: (box->opened) Mar 14 23:14:58 *** dovecot: service=imap, user=***, ip=[::1]. Error: Raw backtrace: /usr/lib/x86_64-linux-gnu/dovecot/libdovecot.so.0(+0xba731) [0x7f553a7ff731] -> /usr/lib/x86_64-linux-gnu/dovecot/libdovecot.so.0(+0xba7fa) [0x7f553a7ff7fa] -> /usr/lib/x86_64-linux-gnu/dovecot/libdovecot.so.0(i_fatal+0) [0x7f553a771638] -> /usr/lib/x86_64-linux-gnu/dovecot/libdovecot-storage.so.0(mailbox_get_open_status+0x68) [0x7f553aae4a78] -> /usr/lib/dovecot/modules/lib21_fts_squat_plugin.so(+0x3684) [0x7f553677a684] -> /usr/lib/dovecot/modules/lib21_fts_squat_plugin.so(+0x3820) [0x7f553677a820] -> /usr/lib/dovecot/modules/lib20_fts_plugin.so(fts_backend_lookup_multi+0x163) [0x7f5539b016a3] -> /usr/lib/dovecot/modules/lib20_fts_plugin.so(+0xd728) [0x7f5539b06728] -> /usr/lib/dovecot/modules/lib20_fts_plugin.so(fts_search_lookup+0xeb) [0x7f5539b06bbb] -> /usr/lib/dovecot/modules/lib20_fts_plugin.so(+0xf8b8) [0x7f5539b088b8] -> dovecot/imap(imap_search_start+0x6a) [0x5654cb5a0d6a] -> dovecot/imap(cmd_sort+0x293) [0x5654cb593553] -> dovecot/imap(command_exec+0x64) [0x5654cb599874] -> dovecot/imap(+0x1bd22) [0x5654cb597d22] -> dovecot/imap(+0x1bdbc) [0x5654cb597dbc] -> dovecot/imap(client_handle_input+0x1b5) [0x5654cb5981c5] -> dovecot/imap(client_input+0xa4) [0x5654cb5987e4] -> /usr/lib/x86_64-linux-gnu/dovecot/libdovecot.so.0(io_loop_call_io+0x69) [0x7f553a8174a9] -> /usr/lib/x86_64-linux-gnu/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x12e) [0x7f553a818d1e] -> /usr/lib/x86_64-linux-gnu/dovecot/libdovecot.so.0(io_loop_handler_run+0x4c) [0x7f553a8175ac] -> /usr/lib/x86_64-linux-gnu/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f553a8177b8] -> /usr/lib/x86_64-linux-gnu/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f553a7940a3] -> dovecot/imap(main+0x339) [0x5654cb58a539] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f553a375b97] -> dovecot/imap(_start+0x2a) [0x5654cb58a71a] Mar 14 23:14:58 *** dovecot: service=imap, user=***, ip=[::1]. Fatal: master: service(imap): child 6436 killed with signal 6 (core dumps disabled) This is my config: # 2.3.0.1 (ffd8a29): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.0.1 (d33dca20) # OS: Linux 4.15.0-46-generic x86_64 Ubuntu 18.04.2 LTS ext4 auth_mechanisms = plain login digest-md5 cram-md5 apop auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890&.-_@' default_vsz_limit = 8096 M disable_plaintext_auth = no first_valid_uid = 30 imap_client_workarounds = delay-newmail imap_logout_format = rcvd=%i, sent=%o mail_home = /var/qmail/mailnames/%Ld/%Ln mail_location = maildir:/var/qmail/mailnames/%Ld/%Ln/Maildir mail_log_prefix = "service=%s, user=%u, ip=[%r]. " mail_max_userip_connections = 100 mail_plugins = quota fts fts_squat virtual managesieve_logout_format = rcvd=%i, sent=%o managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeri$ namespace inbox { inbox = yes location = prefix = INBOX. separator = . } namespace virtual { hidden = no inbox = no list = yes location = virtual:/var/qmail/mailnames/%Ld/%Ln/virtual/:INDEX=/var/qmail/mailnames/%Ld/%Ln/virtual/ prefix = separator = . } passdb { driver = plesk } plugin { fts = squat fts_squat = partial=4 full=10 quota = maildir:User quota quota_grace = 0 sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_extensions = +notify +imapflags } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_logout_format = rcvd=%i, sent=%o, top=%t/%p, retr=%r/%b, del=%d/%m, size=%s protocols = imap pop3 sieve service auth-worker { group = user = } service auth { group = unix_listener auth-userdb { group = popuser mode = 0600 user = popuser } user = } service imap-login { process_limit = 2048 service_count = 1 } service imap { process_limit = 2048 service_count = 1 } service pop3-login { process_limit = 2048 service_count = 1 } service pop3 { process_limit = 2048 service_count = 1 } ssl_cert = </etc/dovecot/private/dovecot.pem ssl_cipher_list = HIGH:!aNULL:!MD5 ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes userdb { args = uid=popuser gid=popuser driver = static } protocol imap { mail_plugins = quota fts fts_squat virtual imap_quota } protocol pop3 { pop3_uidl_format = UID%u-%v } protocol sieve { mail_plugins = quota fts fts_squat virtual } protocol lda { mail_plugins = quota fts fts_squat virtual sieve } dovecot --version -> 2.3.0.1 (ffd8a29) I will be greatful for any tips hinting me on how to resolve this behaviour. Thank you very much in advance Benjamin

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Dovecot Wiki: Please disable edit on double click
by Michael Goth 20 Mar '19

20 Mar '19

Hi Aki, could you maybe disable the 'edit on doubleclick' feature on wiki2.dovecot.org? Everytime I try to select a word by double clicking on it, I end up in editing mode. It's just a minor thing, but maybe I'm not the only one who's annoyed by this ;) Thanks! Michael

6 6

Checkpassword.
by Niamh Holding 20 Mar '19

20 Mar '19

Hello, I've run into the issue detailed at https://wiki2.dovecot.org/AuthDatabase/CheckPassword#Security Understandably I don't have the skills to modify checkpassword so if I do the suggested will it work? If you can't change the script, you can make Dovecot's checkpassword-reply binary setuid or setgid (e.g. chgrp dovecot /usr/libexec/dovecot/checkpassword-reply; chmod g+s /usr/libexec/dovecot/checkpassword-reply) -- Best regards, Niamh mailto:niamh@fullbore.co.uk

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Re: Dovecot quota and Postfix smtpd_recipient_restrictions?
by Davide Marchi 20 Mar '19

20 Mar '19

> From: Urban Loesch > > Hi, > >> I would like to enable (the same) quota (count) for all >> (virtual)users, >> on Debian Stretch, Postfix 3.1.8, Dovecot 2.2.27, >> and is not clear for me if I need to tell Postfix to communicate with >> the service in /etc/postfix/main.cf as here: >> >> >> smtpd_recipient_restrictions = >> ... >> check_policy_service inet:mailstore.example.com:12340 > I configured it like your example above and it works for me. > > Best > Urban Well, so the right syntax (in my case) would be: -o smtpd_recipient_restrictions = reject_non_fqdn_recipient,reject_unknown_recipient_domain,permit_sasl_authenticated,reject,check_policy_service inet:mailstore.example.com:12340 right? :-) And eventually, should you suggest me how made some functional verification test? Many many many thanks Urban!! ;-) Davide

2 1

Dovecot quota and Postfix smtpd_recipient_restrictions?
by Davide Marchi 20 Mar '19

20 Mar '19

Hi Friends, a doubt: I would like to enable (the same) quota (count) for all (virtual)users, on Debian Stretch, Postfix 3.1.8, Dovecot 2.2.27, and is not clear for me if I need to tell Postfix to communicate with the service in /etc/postfix/main.cf as here: smtpd_recipient_restrictions = ... check_policy_service inet:mailstore.example.com:12340 My current Postfix "smtpd_recipient_restrictions": -o smtpd_recipient_restrictions=reject_non_fqdn_recipient,reject_unknown_recipient_domain,permit_sasl_authenticated,reject Currently I've edited: conf.d/10-mail.conf: # Space separated list of plugins to load for all services. Plugins specific to # IMAP, LDA, etc. are added to this list in their own .conf files. mail_plugins = $mail_plugins quota conf.d/20-imap.conf: protocol imap { # Space separated list of plugins to load (default is global mail_plugins). mail_plugins = $mail_plugins imap_quota } conf.d/90-quota.conf: (for use with the quota-status service) plugin { quota_grace = 10%% # 10% is the default quota_status_success = DUNNO quota_status_nouser = DUNNO quota_status_overquota = "552 5.2.2 Mailbox is full" } /etc/dovecot/conf.d/90-quota.conf: plugin { quota = maildir quota_rule = *:storage=3G quota_rule2 = Trash:storage=+100M # LDA/LMTP allows saving the last mail to bring user from under quota to # over quota, if the quota doesn't grow too high. Default is to allow as # long as quota will stay under 10% above the limit. Also allowed e.g. 10M. #quota_grace = 10%% # 10% is the default quota_status_success = DUNNO quota_status_nouser = DUNNO quota_status_overquota = "552 5.2.2 Mailbox is full" } plugin { quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u } plugin { #quota = dirsize:User quota #quota = maildir:User quota #quota = dict:User quota::proxy::quota #quota = fs:User quota quota = count:User quota # This is required - it uses "virtual sizes" rather than "physical sizes" for quota counting: quota_vsizes = yes } plugin { #quota = dict:user::proxy::quota #quota2 = dict:domain:%d:proxy::quota_domain #quota_rule = *:storage=102400 #quota2_rule = *:storage=1048576 } service quota-warning { executable = script /usr/local/bin/quota-warning.sh user = dovecot unix_listener quota-warning { user = vmail } } service quota-status { executable = quota-status -p postfix inet_listener { port = 12340 # You can choose any port you want } client_limit = 1 } Many many thanks!! Davide

3 2

4sec latency when using director
by Erik de Waard 19 Mar '19

19 Mar '19

Hi, I've been running dovecot for many years, but now i've hit a strange problem. when retrieving imap there is sometimes in 1 of 4 imap requests a 4sec latency. * notes: - connected directly to the backends this latency disappears - removing a director from the loadbalancer(lvs) so i'm the only connected to the director this latency disappears too I would appreciate some feedback of where to look because i tried various options. (client_limit,process_limit) perhaps its just as simple as to add more directors but any feedback would be welcome. Thank you. This is the setup: -- Internet -> LVS -> 3 Directors -> 9 Backends. doveadm director status mail server ip tag vhosts state state changed users 10.0.10.110 100 up - 3309 10.0.10.111 100 up - 3412 10.0.10.112 100 up - 3458 10.0.10.113 100 up - 3437 10.0.10.115 100 up - 3368 10.0.10.116 100 up - 3320 10.0.10.117 100 up - 3305 10.0.10.118 100 up - 3291 10.0.10.223 100 up - 3280 #Director doveconf -n # Pigeonhole version 0.4.22 (22940fb7) # OS: Linux 4.9.0-6-amd64 x86_64 Debian 9.4 # Hostname: server312.company.com auth_cache_negative_ttl = 0 auth_cache_size = 10 M auth_cache_ttl = 1 days auth_username_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@#" default_client_limit = 3000 director_mail_servers = 10.0.10.223 10.0.10.110 10.0.10.111 10.0.10.112 10.0.10.113 10.0.10.115 10.0.10.116 10.0.10.117 10.0.10.118 director_servers = 10.0.10.114 10.0.10.181 10.0.10.182 director_user_expire = 1 days disable_plaintext_auth = no info_log_path = /dev/null lmtp_proxy = yes login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e encryption=%k secured=%c mail_max_userip_connections = 100 passdb { args = proxy=y nopassword=y driver = static } protocols = imap lmtp service director { fifo_listener login/proxy-notify { mode = 0600 user = $default_login_user } inet_listener { port = 9090 } unix_listener director-userdb { mode = 0600 } unix_listener login/director { mode = 0666 } } service imap-login { client_limit = 6000 executable = imap-login director process_limit = 4 process_min_avail = 4 service_count = 0 vsz_limit = 600 M } service ipc { unix_listener ipc { user = dovecot } } service lmtp { inet_listener lmtp { port = 24 } } ssl_cert = </etc/ssl-certificates/MDC_company_com.crt ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL:!RC4:!SEED@STRENGTH ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes protocol lmtp { auth_socket_path = director-userdb } #backend doveconf -n # 2.2.34 (874deae): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.22 (22940fb7) # OS: Linux 4.9.0-6-amd64 x86_64 Debian 9.4 # Hostname: server250.company.com auth_cache_negative_ttl = 0 auth_cache_size = 10 M auth_cache_ttl = 1 days auth_username_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@#" default_client_limit = 1500 default_vsz_limit = 600 M disable_plaintext_auth = no info_log_path = /dev/null listen = * log_timestamp = "%Y-%m-%d %H:%M:%S " mail_max_userip_connections = 100 mail_privileged_group = mail mmap_disable = yes 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 = INBOX. separator = . type = private } passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { sieve_execute_bin_dir = /etc/dovecot/sieve-executables sieve_global_extensions = +vnd.dovecot.execute sieve_plugins = sieve_extprograms } protocols = imap lmtp service anvil { unix_listener anvil-auth-penalty { mode = 0600 } } service auth { user = root } service imap-login { client_limit = 6000 process_limit = 4 process_min_avail = 4 service_count = 0 vsz_limit = 600 M } service imap { client_limit = 1 process_limit = 1024 service_count = 50 } service lmtp { inet_listener lmtp { port = 24 } } ssl = no ssl_cert = </etc/dovecot/dovecot.crt ssl_key = # hidden, use -P to show it userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } verbose_proctitle = yes protocol lmtp { mail_plugins = " sieve" plugin { sieve = ~/filters.sieve sieve_after = /etc/dovecot/sieve/after.sieve sieve_before = /etc/dovecot/sieve/before.sieve } userdb { args = /etc/dovecot/dovecot-sql-lmtp.conf driver = sql name = } }

1 1

Way to remove FTS indexes
by Peter Mogensen 19 Mar '19

19 Mar '19

Hi, I was wondering if there was anyway to remove FTS indexes in other to have them rebuild on the next BODY search? All the doveadm commands I can find seem to result in fully build indexes. (which is nice if that's what you want). /Peter

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Re: Upgrade from 2.1.17 2.2.36
by lty 19 Mar '19

19 Mar '19

I use the MAC Foxmail client, v2.2.36 can't receive mail, but v2.1.17 can receive mail. I grabbed the network package and found that Foxmail was not processing the next step after sending the D LIST "" * command. I suspect that because of the time of return, Foxmail is not recognized, so I want to remove this time. 在 2019-03-18 18:03，Aki Tuomi 写道： > On 18.3.2019 12.00, lty via dovecot wrote: > >> v2.1.1 >> >> v2.2.36 >> >> The screenshot is the result returned by imap. >> >> I don't want to want dovecot to return time, can I close it? > > Why do you want this? > > Aki

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AD ldap, filter to exclude various kinds of expired, disabled etc etc users
by mj 19 Mar '19

19 Mar '19

Hi, I was revising our AD ldap user_filter and pass_filter to exclude more types of expired / disabled accounts. I started adding things like: > (&(objectclass=person)(sAMAccountName=%n)(!useraccountcontrol=514)(!(useraccountcontrol=546))(!(useraccountcontrol=66050))(!(useraccountcontrol=8388608))) but then I thought, why not simply do: > (&(objectclass=person)(sAMAccountName=%n)(userAccountControl=512)) as 512 would your regular active user accounts only, excluding all other account types. Looking here (https://support.microsoft.com/en-gb/help/305144/how-to-use-useraccountcontr…) there are some many different userAccountControl to check, that it might be smarter to only allow userAccountControl=512, or....? Any ideas on this..? (or examples of how you do it?) MJ

2 1

Dovecot logrotation - old journal files are still in use
by Denis V Razumovskiy 19 Mar '19

19 Mar '19

2 2

dovecot-openssl-common.c and [-Wincompatible-pointer-types]
by Rupert Gallagher 18 Mar '19

18 Mar '19

Warnings from clang 7.0 when compiling dovecot-openssl-common.c from dovecot 2.3.5 with openssl 1.1.1a. This is dovecot's configuration: > config_options="--prefix=$prefix \ > --sysconfdir=$prefix/etc \ > --datarootdir=$prefix/share \ > --mandir=$man \ > --docdir=$doc \ > --with-docs \ > --with-ssl=openssl --with-ssldir=$prefix/etc \ > --with-sodium \ > --with-libiconv-prefix=/opt/libiconv \ > \ > --with-bzlib=no \ > --with-gssapi=no \ > --with-ldap=no \ > --with-lucene=no \ > --with-lz4=no \ > --with-lzma=no \ > --with-pam=no \ > --with-solr=no \ > --with-sql=no \ > --with-vpopmail=no \ > --with-zlib=no \ > \ > --enable-dependency-tracking"; Note on passing: --with-ssldir=$prefix/etc is ignored by the configurator, as it forces $prefix/etc/dovecot.

1 0

Dovecot logrotation - old journal files are still in use (second attempt)
by Denis V Razumovskiy 18 Mar '19

18 Mar '19

Hi all Sorry, it is the second attempt due to wrong format of the first message. In my Dovecot there are 3 files of logging (debug, info and .log) While executing logrotation, the new files are created, but the previos ones, namely dovecot.*.1 are still in use by the process Here is the logger process in memory: root 19140 0.0 0.0 4140 1576 ? S Mar12 0:06 dovecot/log Here the files it uses after the daily logrotation had happened: # lsof -p19140 |grep log ... log 19140 root 33w REG 9,3 811 417675 /var/log/dovecot.log.1 log 19140 root 34w REG 9,3 2842123 417681 /var/log/dovecot.info.1 log 19140 root 35w REG 9,3 14853918 417683 /var/log/dovecot.debug.1 ... After the manual issue 'doveadm log reopen` command the files are changed to # lsof -p19140 |grep dovecot\\\. ... log 19140 root 33w REG 9,3 0 417651 /var/log/dovecot.log log 19140 root 34w REG 9,3 121374 417690 /var/log/dovecot.info log 19140 root 35w REG 9,3 916153 417691 /var/log/dovecot.debug as it is expected to be. I use the logrotate config for dovecot instance: /var/log/dovecot.log /var/log/dovecot.info /var/log/dovecot.debug { daily rotate 14 missingok notifempty compress delaycompress sharedscripts postrotate doveadm log reopen chmod 666 /var/log/dovecot.log chmod 666 /var/log/dovecot.info chmod 666 /var/log/dovecot.debug endscript } At the same time, dovecot itself still uses previous logs: # lsof |grep var\/log\/dovecot\. dovecot 19138 root 8w REG 9,3 12962 417613 /var/log/dovecot.log.1 (deleted) dovecot 19138 root 9w REG 9,3 4097250 416836 /var/log/dovecot.info.1 (deleted) dovecot 19138 root 10w REG 9,3 23816347 417603 /var/log/dovecot.debug.1 (deleted) What can be the root of the issue? I use Dovecot as LDA for Postfix with system users, mbox mail format. System Slackware 12.0 x86, Postfix 2.4.5, Dovecot 2.2.36. Interconnect Postfix-Dovecot has been made via `mailbox_command = ...' Dovecot was compiled from sources Logging configuration (file conf.d/10-logging.conf) contains the following: log_path = /var/log/dovecot.log info_log_path = /var/log/dovecot.info debug_log_path = /var/log/dovecot.debug auth_verbose = yes auth_verbose_passwords = yes auth_debug = yes mail_debug = yes verbose_ssl = yes plugin { } Could the fact, that Postfix require Dovecot logs to be accessible someway, result in such a weird behavior? To allow other processes to access Dovecot logs I had to chmod 0666 all the current logs while integrating Dovecot into Postfix delivery (please see `chmod' commands in the logrotate config above) Please ignore my previos post https://dovecot.org/pipermail/dovecot/2019-March/115075.html Thank you Denis Razoumovskiy

2 1

child-wait.c and [-Wnull-pointer-arithmetic]
by Rupert Gallagher 18 Mar '19

18 Mar '19

Attached warnings from clang 7.0 when compiling child-wait.c from dovecot 2.3.5: "arithmetic on a null pointer treated as a cast from integer to pointer is a GNU extension [-Wnull-pointer-arithmetic]".

2 2

LDAP users issue
by Anushka Bandara 18 Mar '19

18 Mar '19

Hi Team, I have enabled LDAP authentication with webmail client and it works successfully. But I found an error with LDAP user's mail. Email is not loaded when I log with an LDAP user. Login phase is successful and mail box is the issue. I created a mail user without including LDAP and that user works fine. Issue comes only with LDAP users. *Anushka Bandara* Research Engineer Lanka Software Foundation +94715846018

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Upgrade from 2.1.17 2.2.36
by lty 18 Mar '19

18 Mar '19

v2.1.1 v2.2.36 The screenshot is the result returned by imap. I don't want to want dovecot to return time, can I close it?

2 1

`Spam' folder creation for multiple users
by Marek Kozlowski 17 Mar '19

17 Mar '19

:-) I've just added pigeonhole and a simple sieve script: ------------------------------------------------- require "fileinto"; if header :contains "X-Spam-Flag" "YES" { fileinto "Spam"; } ------------------------------------------------- If a user has this folder (`Spam') it works fine. If they haven't it results in an error. 1. Can I modify the script to create this folder if the need arise? 2. If not - what's the most recommended way of adding this folder for all users (~1000)? Thanks! Best regards, Marek

3 2

MikroTik Users Contact List
by Kathleen Brown 17 Mar '19

17 Mar '19

Hello, Hope you're having a great day! I just wanted to know if you're looking to acquire MikroTik Users Contact List for your marketing efforts? Information Field: Names, Title, Email, Phone, Company Name, Company URL, Company physical address, SIC Code, Industry and Company Size (Revenue and Employee). Kindly review and let me know of your target interest so that I can get back to you with the exact counts and sample file. Do let me know if you have any questions for me. Regards, Kathleen Brown Database Executive If you do not wish to receive these emails. Please respond Exit.

2 1

lda: Unknown mail storage driver maildir
by Rob De Langhe 17 Mar '19

17 Mar '19

hi all, I have a successful (self-compiled from source code) Dovecot v2.2.16 setup active on my Solaris-10 server, with mails stored in user's $HOME/Maildir The mails are fetched from the ISP with "fetchmail", using a "cron" job fetchmail -f $HOME/etc/pop3.myisp where the file "$HOME/etc/pop3.myisp" contains set logfile fetchmail.log poll pop.myisp.be with proto POP3 user myIspmailLogin there with password myIspPwd is rob here nokeep mda "/programs-3.2/amd64/64/libexec/dovecot/deliver" Now I want to get it also running on a Debian server, with the same Dovecot version, and exactly the same config files, but here I get the following messages in "/var/log/mail.log" when launching a "fetchmail" attempt : Mar 17 14:36:20 apps_b dovecot: lda(rob): Debug: Effective uid=1000, gid=1000, home=/home/rob Mar 17 14:36:20 apps_b dovecot: lda(rob): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=no, hidden=no, list=yes, subscriptions=yes location=maildir:~/Maildir Mar 17 14:36:20 apps_b dovecot: lda(rob): Error: User initialization failed: Namespace '': Unknown mail storage driver maildir Mar 17 14:36:20 apps_b dovecot: lda(rob): Fatal: Invalid user settings. Refer to server log for more information. So it seems to be complaining about "maildir" storage driver ?! My config is: # /programs/3.4/x86_64/64/sbin/dovecot -n -c /usr/local/dovecot/dovecot.conf # 2.2.16: /usr/local/dovecot/dovecot.conf # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.4 disable_plaintext_auth = no first_valid_gid = 1000 first_valid_uid = 1000 last_valid_gid = 1500 last_valid_uid = 2000 mail_debug = yes mail_location = maildir:~/Maildir namespace inbox { 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 = * driver = pam } postmaster_address = rob(a)mydomain.be ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd }

2 1

LMTP Proxy failure using master login via destuser field
by Dirk 17 Mar '19

17 Mar '19

Hi list, I set up dovecot as IMAP proxy using a master user to login into the backend and it works beautifully. 👍🏻 Next I set out to do LMTP proxying and I struggled (initially). I got the log message: Mar 17 11:23:44 mail postfix/lmtp[2665]: 99A3F219C8: to=<johnny(a)doe.com>, relay=10.15.1.2[10.15.1.2]:24, delay=5.1, delays=4.9/0.05/0.01/0.07, dsn=5.1.1, status=bounced (host 10.15.1.2[10.15.1.2] said: 550 5.1.1 <"johnny(a)doe.com*director"@mail.server.com> User doesn't exist: "johnny(a)doe.com*director"@mail.server.com (in reply to RCPT TO command)) My director's passdb setting looked like this: passdb { driver = sql args = /etc/dovecot/sql/my-passdb.conf result_success = continue-ok result_failure = return-fail result_internalfail = return-fail } # Add director master user credentials if above succeeded passdb { driver = static args = proxy=y starttls=any-cert \ destuser=%u*director(a)example.com \ pass=correcthorsebatterystaple \ nopassword=y skip = unauthenticated } In the end I found that setting the `master` field instead of `destuser` solves the issue. It looks like LMTP does not know how to handle the master user separator although set. I this known/wanted behavior? Maybe this is something to mention on the wiki page, it took a while to figure this out... Kind regards, Dirk Mit freundlichen Grüßen Dirk Weise DevOps Engineer -- bitloft GmbH | Schulstraße 2 | D-42551 Velbert www.bitloft.de | weise(a)bitloft.de Telefon: +49 2051 40514-32 Geschäftsführer: Robin Clemens, Franz-Josef Wieneke Amtsgericht Wuppertal HRB 17297 | USt-IDNr. DE121540053

1 0

testing dovecot LMTP with postfix/spamassassin
by Marek Kozlowski 17 Mar '19

17 Mar '19

:-) My postfix configuration is quite complex with a lot of special cases and rules. However I'd like to make an anti-spam configuration as simple and lightweight as possible (KISS). /etc/postfix/master.cf ------------------------------------------------------------------------ smtp inet n - n - - smtpd -o content_filter=spamassassin spamassassin unix - n n - - pipe user=nobody argv=/usr/bin/vendor_perl/spamc -e /usr/sbin/sendmail -oi -f ${sender} ${recipient} ------------------------------------------------------------------------ then the simplest sieve rule I can think of: ------------------------------------------------------------------------ require "fileinto"; if header :contains "X-Spam-Flag" "YES" { fileinto "Spam"; } ------------------------------------------------------------------------ I'd like to make this rule active for only local deliveries via dovecot LMTP with sieve plugin and setting postfix `mailbox_transport' to dovecot LMTP. I believe it is so simple it should work (am I wrong?). But... It would be more convenient to do some tests before applying changes to a production environment config. The problem is: I have no separate testing environment with my strange configuration I'm able to test a spamassassin score for an e-mail manually. How about dovecot LMTP? Can I test local mail delivery by dovecot LMTP manually? I mean: to simulate "I'm the Postfix" and produce for some testing e-mail the same effect as postfix granting it via `local_transport' to dovecot? Best regards, Marek

4 6

LMTP: Undelivered Mail Returned to Sender: User doesn't exist! :-(
by Marek Kozlowski 17 Mar '19

17 Mar '19

:-) I'm using postfix for mail delivery and dovecot for mailbox access imaps pop3s. Postfix resolves, verifies and overwrites users' addresses by numerous subtle LDAP queries. However users are visible as local ones (openldap, pam, nss) in the sense I can run `id' or `finger' queries and receive replies. Dovecot handles all mailboxes over imap/pop correctly with no additional configuration for LDAP. Just (10-mail.conf): mail_location = maildir:/mailboxes/%u and it works fine. Because I'd like to use pigeonhole I'm trying to make local delivery via dovecot LMTP (https://wiki2.dovecot.org/HowTo/PostfixDovecotLMTP) I've configured the socket and added to `/etc/postfix/main.cf' the line: mailbox_transport = lmtp:unix:/var/spool/postfix/private/dovecot-lmtp I think that id dovecot handles mailboxes correctly over imap/pop it can easily find the users and their mailboxes so it doesn't need any additional configuration for LDAP. Unfortunately it doesn't work and results in: Undelivered Mail Returned to Sender: User doesn't exist! :-( What's the thing I've missed? Best regards, Marek

2 2

How to create sent items, drafts and so on
by Sakuma, Koshiro 17 Mar '19

17 Mar '19

Hello, I've setup Dovecot and Postfix mailing systems. The protocol is imap. Now, I've realized that there are no "sent items, drafts" boxed under Maildir for each users. I would like to take back up Inbox, sent items, draft boxes. For sent items box, it seems to be stored in outlook client file which is "ost". The configuration parameters and version is as follows. I can see that "namespace" has been configured. How can I setup to see these folders? Thank you for your support! 1. Dovecot version ->2.2.36 2. dovecot -n ----------------------------------------------------------------------------------------------------------- #2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf # OS: Linux 3.10.0-957.5.1.el7.x86_64 x86_64 CentOS Linux release 7.6.1810 (Core) # Hostname: mail.corp-associe.com auth_mechanisms = plain login auth_verbose = yes disable_plaintext_auth = no first_valid_uid = 1000 listen = * log_path = /var/log/dovecot.log mail_debug = yes mail_location = maildir:~/Maildir mbox_write_locks = fcntl namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = scheme=CRAM-MD5 username_format=%u /etc/dovecot/users driver = passwd-file } 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 ssl = yes } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 995 ssl = yes } } ssl_cert = </etc/letsencrypt/fullchain1.pem ssl_key = # hidden, use -P to show it userdb { args = username_format=%u /etc/dovecot/users driver = passwd-file } userdb { args = uid=vmail gid=vmail home=/var/spool/virtual/%d/%n driver = static }

4 9

Re: Unable to set quota-fs plugin
by Eric Grammatico 17 Mar '19

17 Mar '19

Hi there, Well.. I didn't find a way to strace imap. If I well understood, the faulty IMAP is launched by dovecot from or after a succesfull imap-login process. I have executed manually '/usr/libexec/dovecot/imap -u eric' and typed getquotaroot "INBOX" which didn't reproduce the error seen in the dovecot logs and reported the correct quota. Any idea how to find the imap command generating the error imap(eric)<3085></M5VXfCBwJejrKVa>: Error: Failed to get quota resource STORAGE: quota-fs: quotactl(Q_GETQUOTA, /dev/vda1) failed: No such file or directory Thanks and regards, - Eric Grammatico _/) 14 mars 2019 11:46 "Eric Grammatico" <e.grammatico(a)gmail.com> a écrit: > I use sendmail and quota-status is not running in background. > > Fully aligned with you about focusing on imap... will try to get other strace and report there. > > thanks and regards, > > - > Eric Grammatico _/) > > 14 mars 2019 11:37 "Yassine Chaouche via dovecot" <dovecot(a)dovecot.org> a écrit: > >> On 3/14/19 9:53 AM, Yassine Chaouche via dovecot wrote: >> >>> On 3/13/19 2:10 PM, Eric Grammatico via dovecot wrote: >>>> Thanks Aki, >>>> >>>> Please find attached strace for imap and quota-status which report an >> error at the end. >>>> >>>> Regards, >>> >>> write(2, "/usr/libexec/dovecot/quota-statu"..., > 57/usr/libexec/dovecot/quota-status: invalid >>> option -- 'u' >>> >>> Please retry with the good options (-u is invalid) >>> >>> Yassine. >> >> Ah, that seems to be the service that is called by the MTA before delivering the mail to the LDA, >> in case the user is over quota, so that the MTA may bounce the e-mail right away instead of >> accepting it first then bouncing afterwards (after the LDA refuses the message). >> >> But according to the error message you posted on your first e-mail, the error happens with imap, I >> don't know if quota-status is involved here (might be) ? >> >> In any case, I would concentrate on imap and not quota-status. Nothing in the imap strace shows any >> trace of errors. Particulary, I was looking for a quotactl line in the strace, but I couldn't find >> it. >> >> In the other hand, it is present in the doveadm quota strace, and has completed successfully >> >> dovecot.strace:quotactl(QCMD(Q_GETQUOTA, USRQUOTA), "/dev/vda1", 1000, {dqb_bhardlimit=4194304, >> dqb_bsoftlimit=3170304, dqb_curspace=638853120, dqb_ihardlimit=0, dqb_isoftlimit=0, >> dqb_curinodes=12784, ...}) = 0 >> >> Someone has to tell us under what conditions will the imap daemon check for quota (at login ? at >> delivery or any other action involving moving mail around like copying or expunging ?) >> >> For the quota-status libexec, I have set it to run with quota-status -f postfix but your setup may >> vary (if it's every configured). If it is running, you can just grep it's pid with pgrep >> quota-status then strace -p $PID and see how it behaves (wait until a quota operation is needed). >> >> Yassine.

2 6

ssl_dh
by sergio 16 Mar '19

16 Mar '19

https://wiki.dovecot.org/SSL/DovecotConfiguration says: "Since v2.3.3+ Diffie-Hellman parameters have been made optional, and you are encouraged to disable non-ECC DH algorithms completely." and a bit later: "From version 2.3, you must specify path to DH parameters file using ssl_dh=</path/to/dh.pem" So. 1. Is ssl_dh an optional or a must? 2. I've disabled ssl_dh in my config. Dovecot works fine except it shows warnings: doveconf: Warning: please set ssl_dh=</etc/dovecot/dh.pem doveconf: Warning: You can generate it with: dd ... I'm using dovecot version 2.3.4.1-1~bpo9+1 from debian stretch-backports -- sergio.

3 5

regarding ssl certificates
by mick crane 15 Mar '19

15 Mar '19

Excuse dopey question. I'm not exactly clear about certificates. Apache2 default install has this snake oil certificate Can make a new one for apache Can make one for dovecot Can make one for ssl Is there supposed to be the one (self signed ) certificate pair in one place for the machine that each process hands out ? Can they be moved to another machine ? mick -- Key ID C7D6E24C

12 16

lua policy for Weakforce and web mail failed login attempts
by Robert Kudyba 15 Mar '19

15 Mar '19

The good news is I believe I got Weakforce running 1) curl -X GET http://127.0.0.1:8084/?command=ping -u wforce:ourpassword {"status":"ok"}[ 2) after running the sample for loop: for a in {1..101}; do curl -X POST -H "Content-Type: application/json" --data '{"login":"ahu", "remote": "127.0.0.1", "pwhash":"1234'$a'", "success":"false"}' http://127.0.0.1:8084/?command=report -u wforce:ourpassword; done The result is: {"status":"ok"}{"status":"ok"}{"status":"ok"}{ 3) So checking the stats: curl -X POST -H "Content-Type: application/json" --data '{"ip":"127.0.0.1"}' http://127.0.0.1:8084/?command=getDBStats -u wforce:ourpassword {"bl_expire": "", "bl_reason": "", "blacklisted": false, "ip": "127.0.0.1", "stats": {"OneHourDB": {"diffFailedPasswords": 93}}} Notice the 93. 4) the reset works but I believe there's a bug in Getdbstats v2.0.0 where "blacklisted" is always shown: curl -X POST -H "Content-Type: application/json" --data '{"ip":"127.0.0.1"}' http://127.0.0.1:8084/?command=getDBStats -u wforce:ourpassword {"bl_expire": "", "bl_reason": "", "blacklisted": false, "ip": "127.0.0.1", "stats": {"OneHourDB": {"diffFailedPasswords": 0}}}[ 5) wforce -c Read configuration from '/usr/local/etc/wforce.conf' Connecting to 127.0.0.1:4004 > stats() 101 reports, 0 allow-queries (0 denies) The 3 big questions I have: a: how do I know IP's are being banned/rejected? Is there an alert creation or a way to see in the logs that the rules are in affect? b: since I installed via Git and ran "make" how to I get wforce --daemon to start on reboot? Is there a systemd file available? c: How do I create a lua policy that would catch these web dovecot login attempts? Feb 27 08:19:53 ourserver auth[15085]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 08:19:53 ourserver auth[15085]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= user(a)ourserver.ourdomain.edu rhost=177.72.0.158 Feb 27 08:20:35 ourserver auth[15085]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 08:20:35 ourserver auth[15085]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=user rhost=213.156.111.236 Feb 27 08:27:07 ourserver auth[16831]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 08:27:07 ourserver auth[16831]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= nobody(a)ourserver.ourdomain.edu rhost=79.106.35.59 Feb 27 08:27:27 ourserver auth[16831]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=nobody rhost=95.38.212.65 user=nobody Feb 27 08:27:27 ourserver auth[16831]: pam_succeed_if(dovecot:auth): requirement "uid >= 1000" not met by user "nobody" Feb 27 08:31:12 ourserver auth[17875]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 08:31:12 ourserver auth[17875]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= ouruser(a)ourserver.ourdomain.edu rhost=80.78.70.1 Feb 27 08:31:33 ourserver auth[17875]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=ouruser rhost=45.225.236.198 user=ouruser Feb 27 09:32:22 ourserver auth[32689]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 09:32:22 ourserver auth[32689]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= nobody(a)ourserver.ourdomain.edu rhost=37.205.81.41 Feb 27 09:32:42 ourserver auth[32689]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=nobody rhost=201.148.100.198 user=nobody Feb 27 09:32:42 ourserver auth[32689]: pam_succeed_if(dovecot:auth): requirement "uid >= 1000" not met by user "nobody" Feb 27 09:44:09 ourserver auth[3271]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 09:44:09 ourserver auth[3271]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= otheruser(a)ourserver.ourdomain.edu rhost=177.69.145.193 Feb 27 09:44:35 ourserver auth[3271]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 09:44:35 ourserver auth[3271]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=otheruser rhost=175.143.51.221 Feb 27 09:47:32 ourserver auth[4048]: pam_unix(dovecot:auth): check pass; user unknown Feb 27 09:47:32 ourserver auth[4048]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser= yetanotheruser(a)ourserver.ourdomain.edu rhost=162.245.81.231 Feb 27 09:47:56 ourserver auth[4048]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=yetanotheruser rhost=83.243.88.236 user=yetanotheruser Feb 27 20:44:41 ourserver auth[5828]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=ouruser rhost=166.171.184.200 user=ouruser

1 0

Re: ACL Folders are open but not being displayed ? [2.3.3]
by Aki Tuomi 15 Mar '19

15 Mar '19

It's a file, `touch subscriptions` Aki On 15.3.2019 11.36, Kunal A. wrote: > Oh okay. How do correct this? Create the file/folder for this? ie > mkdir suscriptions ? > > > On Fri, Mar 15, 2019 at 5:29 AM Aki Tuomi <aki.tuomi(a)open-xchange.com > <mailto:aki.tuomi@open-xchange.com>> wrote: > > Nevertheless, the subscriptions file needs to be there. > > Aki > > On 15.3.201911.28, Kunal A. wrote: >> Dear Aki, >> Got it corrected. Many thanks for pointing it out. There is >> another error about suscriptions. I don't have any folder with >> subscriptions. See the error below :- >> >> Mar 15 05:22:10 machine dovecot[4804]: imap(email1(a)example.com >> <mailto:email1@example.com>)<4970><XjWwkh6EBsAAAAAAAAAAAAAAAAAAAAAB>: >> Error: stat(/mnt/computer/Email/fastmail/subscriptions) failed: >> Permission denied >> >> dr-xr-xr-x root root / >> drwxr-xr-x root root mnt >> drwxr-xr-x vmail vmail computer >> drwxrwxr-x vmail vmail Email >> drwxrwxr-x vmail vmail fastmail >> subscriptions - No such file or directory >> >> Best Regards >> >> >> On Fri, Mar 15, 2019 at 3:02 AM Aki Tuomi >> <aki.tuomi(a)open-xchange.com <mailto:aki.tuomi@open-xchange.com>> >> wrote: >> >> >> On 15.3.2019 8.40, Kunal A. via dovecot wrote: >>> Hey, >>> Could someone help figure out whats wrong with my config >>> based on the debug below? >>> >>> What I am trying to achieve is to get email1(a)example.com >>> <mailto:email1@example.com> to read emails in the Public >>> directory that is stored on >>> /run/media/computer/Storage/Email/fastmail/Archive with the >>> preface Public/Archive . >>> >>> The ACL has been set for anyone with permissions to >>> lookup,read,write as shown below:- >>> >>> doveadm acl get -u email1(a)example.com >>> <mailto:email1@example.com> Public/Archive >>> ID Global >>> Rights >>> anyone lookup read write >>> >>> But when I try to access the emails for email1(a)example.com >>> <mailto:email1@example.com> , there are no folders. >>> Could someone here help review my debug log and advise what >>> could be causing this (dovecot -n output is provided below >>> the debug message) >>> >>> Many thanks for assistance. >>> Thanks >>> >> >>> Mar 15 01:29:28 machine dovecot[2100]: >>> imap(email1(a)example.com >>> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >>> Error: >>> open(/run/media/computer/Storage/Email/fastmail/dovecot-acl-list) >>> failed: Permission denied >> >>> Mar 15 01:29:28 machine dovecot[2100]: >>> imap(email1(a)example.com >>> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >>> Error: stat(/run/media/computer/Storage/Email/fastmail) >>> failed: Permission denied (euid=5000(vmail) egid=5000(vmail) >>> missing +w perm: /run/media/computer/Storage/Email/fastmail >>> stat(/run/media/computer/Storage/Email/fastmail) failed: >>> Permission denied, dir owned by 0:0 mode=0775) >> >>> Mar 15 01:29:28 machine dovecot[2100]: >>> imap(email1(a)example.com >>> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >>> Error: >>> stat(/run/media/computer/Storage/Email/fastmail/.temp.e480machine.5167.a6506e27bd37a68a) >>> failed: Permission denied >> >>> Mar 15 01:30:14 machine dovecot[2100]: >>> imap(email1(a)example.com >>> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >>> Error: mkdir(/run/media/computer/Storage/Email/fastmail) >>> failed: Permission denied (euid=5000(vmail) egid=5000(vmail) >>> missing +w perm: /run/media/computer, we're not in group >>> 0(root), dir owned by 0:0 mode=0775) >>> >> >> Maybe try fix these? >> >> >> Aki >>

2 1

Double quota calulation when special folder is present
by Bernd Wurst 15 Mar '19

15 Mar '19

Hello, we're operating dovecot on a small server. Some years ago, we migrated from courier IMAP to dovecot. Therefore, we defined our default Namespace "inbox" with prefix "INBOX." to have this compatible. I found this in some migration docs those days. Generally, everything worked as expected. Our only namespace is configured like this: namespace inbox { separator = . prefix = INBOX. inbox = yes } Regularly, there is no folder named INBOX or .INBOX in the file system, I suppose this is correct. But I found a special corner case today when it comes to quota calculation. When - for whatever reason - a folder .INBOX.foo (for arbitrary values of foo) exists, the whole mailbox is counted twice in quota recalculation. Just creating .INBOX does nothing but a subfolder triggers the problem. This is my shell view (replaced username and file path and deleted unnecessary debug output) $ cat maildirsize 268435456S 14697 17 $ maildirmake .INBOX.foo $ sudo doveadm -D quota recalc -u <user> [...] doveadm(<user>): Debug: Namespace inbox: type=private, prefix=INBOX., sep=., inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:/home/.../test doveadm(<user>): Debug: maildir++: root=/home/.../test, index=, indexpvt=, control=, inbox=/home/.../test, alt= doveadm(<user>): Debug: Namespace : type=private, prefix=, sep=, inbox=no, hidden=yes, list=no, subscriptions=no location=fail::LAYOUT=none doveadm(<user>): Debug: none: root=, index=, indexpvt=, control=, inbox=, alt= doveadm(<user>): Debug: quota: quota_over_flag check: quota_over_script unset - skipping doveadm(<user>): Debug: Quota root User quota: Recalculated relative rules with bytes=268435456 count=0. Now grace=26843545 doveadm(<user>): Debug: Namespace INBOX.: Using permissions from /home/.../test: mode=0700 gid=default $ cat maildirsize 268435456S 29394 34 So the used quota has exactly been doubled by just creating an empty subfolder. Do you have any pointers for fixing my configuration or is this a bug in dovecot? regards, Bernd

2 1

Upgrading to 2.3
by ＠lbutlr 15 Mar '19

15 Mar '19

I haven't upgraded to dovecot 2.3 yet, but am looking into doing it. I thought there was a link to some of the issues and changes you needed to make to your configuration to go from 2.2 to 2.3, but now I cannot find it. -- Science is the foot that kicks magic square in the nuts.

4 4

Re: ACL Folders are open but not being displayed ? [2.3.3]
by Aki Tuomi 15 Mar '19

15 Mar '19

Nevertheless, the subscriptions file needs to be there. Aki On 15.3.201911.28, Kunal A. wrote: > Dear Aki, > Got it corrected. Many thanks for pointing it out. There is another > error about suscriptions. I don't have any folder with subscriptions. > See the error below :- > > Mar 15 05:22:10 machine dovecot[4804]: imap(email1(a)example.com > <mailto:email1@example.com>)<4970><XjWwkh6EBsAAAAAAAAAAAAAAAAAAAAAB>: > Error: stat(/mnt/computer/Email/fastmail/subscriptions) failed: > Permission denied > > dr-xr-xr-x root root / > drwxr-xr-x root root mnt > drwxr-xr-x vmail vmail computer > drwxrwxr-x vmail vmail Email > drwxrwxr-x vmail vmail fastmail > subscriptions - No such file or directory > > Best Regards > > > On Fri, Mar 15, 2019 at 3:02 AM Aki Tuomi <aki.tuomi(a)open-xchange.com > <mailto:aki.tuomi@open-xchange.com>> wrote: > > > On 15.3.2019 8.40, Kunal A. via dovecot wrote: >> Hey, >> Could someone help figure out whats wrong with my config based on >> the debug below? >> >> What I am trying to achieve is to get email1(a)example.com >> <mailto:email1@example.com> to read emails in the Public >> directory that is stored on >> /run/media/computer/Storage/Email/fastmail/Archive with the >> preface Public/Archive . >> >> The ACL has been set for anyone with permissions to >> lookup,read,write as shown below:- >> >> doveadm acl get -u email1(a)example.com <mailto:email1@example.com> >> Public/Archive >> ID Global Rights >> anyone lookup read write >> >> But when I try to access the emails for email1(a)example.com >> <mailto:email1@example.com> , there are no folders. >> Could someone here help review my debug log and advise what could >> be causing this (dovecot -n output is provided below the debug >> message) >> >> Many thanks for assistance. >> Thanks >> > >> Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com >> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >> Error: >> open(/run/media/computer/Storage/Email/fastmail/dovecot-acl-list) >> failed: Permission denied > >> Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com >> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >> Error: stat(/run/media/computer/Storage/Email/fastmail) failed: >> Permission denied (euid=5000(vmail) egid=5000(vmail) missing +w >> perm: /run/media/computer/Storage/Email/fastmail >> stat(/run/media/computer/Storage/Email/fastmail) failed: >> Permission denied, dir owned by 0:0 mode=0775) > >> Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com >> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >> Error: >> stat(/run/media/computer/Storage/Email/fastmail/.temp.e480machine.5167.a6506e27bd37a68a) >> failed: Permission denied > >> Mar 15 01:30:14 machine dovecot[2100]: imap(email1(a)example.com >> <mailto:email1@example.com>)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: >> Error: mkdir(/run/media/computer/Storage/Email/fastmail) failed: >> Permission denied (euid=5000(vmail) egid=5000(vmail) missing +w >> perm: /run/media/computer, we're not in group 0(root), dir owned >> by 0:0 mode=0775) >> > > Maybe try fix these? > > > Aki >

1 0

ACL Folders are open but not being displayed ? [2.3.3]
by Kunal A. 15 Mar '19

15 Mar '19

Hey, Could someone help figure out whats wrong with my config based on the debug below? What I am trying to achieve is to get email1(a)example.com to read emails in the Public directory that is stored on /run/media/computer/Storage/Email/fastmail/Archive with the preface Public/Archive . The ACL has been set for anyone with permissions to lookup,read,write as shown below:- doveadm acl get -u email1(a)example.com Public/Archive ID Global Rights anyone lookup read write But when I try to access the emails for email1(a)example.com , there are no folders. Could someone here help review my debug log and advise what could be causing this (dovecot -n output is provided below the debug message) Many thanks for assistance. Thanks Debug Message: Mar 15 01:26:47 machine dovecot[2100]: imap-login: Login: user=< email1(a)example.com>, method=PLAIN, rip=::1, lip=::1, mpid=5167, secured, session=<i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB> Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Loading modules from directory: /usr/lib64/dovecot Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Module loaded: /usr/lib64/dovecot/lib01_acl_plugin.so Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Module loaded: /usr/lib64/dovecot/lib02_imap_acl_plugin.so Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Module loaded: /usr/lib64/dovecot/lib10_quota_plugin.so Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Module loaded: /usr/lib64/dovecot/lib11_imap_quota_plugin.so Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Effective uid=5000, gid=5000, home=/var/mail/vhosts/ example.com/email1 Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: quota: No quota setting - plugin disabled Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Namespace inbox: type=private, prefix=INBOX/, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/Maildir Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: maildir++: root=/var/mail/vhosts/example.com/email1/Maildir, index=, indexpvt=, control=, inbox=/var/mail/vhosts/example.com/email1/Maildir, alt= Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: initializing backend with data: vfile Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: acl username = email1(a)example.com Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: owner = 1 Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: Global ACLs disabled Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Namespace : type=public, prefix=Public/, sep=/, inbox=no, hidden=no, list=children, subscriptions=yes location=maildir:/run/media/computer/Storage/Email/fastmail:LAYOUT=fs Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: fs: root=/run/media/computer/Storage/Email/fastmail, index=, indexpvt=, control=, inbox=, alt= Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: initializing backend with data: vfile Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: acl username = email1(a)example.com Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl: owner = 0 Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: Global ACLs disabled Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Namespace : type=private, prefix=, sep=, inbox=no, hidden=yes, list=no, subscriptions=no location=fail::LAYOUT=none Mar 15 01:26:47 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: none: root=, index=, indexpvt=, control=, inbox=, alt= Mar 15 01:28:37 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Mailbox INBOX: Mailbox opened because: SELECT Mar 15 01:28:37 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: file /var/mail/vhosts/ example.com/email1/Maildir/dovecot-acl not found Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Mailbox Public/Archive: Mailbox opened because: SELECT Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: no access to file /run/media/computer/Storage/Email/fastmail/Archive/dovecot-acl Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Error: open(/run/media/computer/Storage/Email/fastmail/dovecot-acl-list) failed: Permission denied Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Error: stat(/run/media/computer/Storage/Email/fastmail) failed: Permission denied (euid=5000(vmail) egid=5000(vmail) missing +w perm: /run/media/computer/Storage/Email/fastmail stat(/run/media/computer/Storage/Email/fastmail) failed: Permission denied, dir owned by 0:0 mode=0775) Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Namespace Public/: Using permissions from /run/media/computer/Storage/Email/fastmail: mode=0700 gid=default Mar 15 01:29:28 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Error: stat(/run/media/computer/Storage/Email/fastmail/.temp.e480machine.5167.a6506e27bd37a68a) failed: Permission denied Mar 15 01:29:35 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: Mailbox INBOX/Public/Archive: Mailbox opened because: SELECT Mar 15 01:29:35 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: file /var/mail/vhosts/ example.com/email1/Maildir/.Public.Archive/dovecot-acl not found Mar 15 01:30:14 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Debug: acl vfile: file /var/mail/vhosts/ example.com/email1/Maildir/.Trash/dovecot-acl not found Mar 15 01:30:14 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Error: mkdir(/run/media/computer/Storage/Email/fastmail) failed: Permission denied (euid=5000(vmail) egid=5000(vmail) missing +w perm: /run/media/computer, we're not in group 0(root), dir owned by 0:0 mode=0775) Mar 15 02:00:14 machine dovecot[2100]: imap(email1(a)example.com)<5167><i8fdSBuE8uMAAAAAAAAAAAAAAAAAAAAB>: Disconnected for inactivity in=155 out=1494 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0 dovecot -n Output : # 2.3.3 (dcead646b): /etc/dovecot/dovecot.conf # OS: Linux 4.20.14-200.fc29.x86_64 x86_64 Fedora release 29 (Twenty Nine) # Hostname: machine auth_mechanisms = plain login mail_debug = yes mail_gid = vmail mail_location = maildir:~/Maildir mail_plugins = acl quota mail_privileged_group = mail mail_uid = vmail mbox_write_locks = fcntl namespace { list = children location = maildir:/run/media/computer/Storage/Email/fastmail:LAYOUT=fs prefix = Public/ separator = / subscriptions = yes type = public } namespace inbox { inbox = yes list = 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 = INBOX/ separator = / } passdb { driver = pam } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { acl = vfile acl_shared_dict = file:/var/mail/vhosts/example.com/Sharedbox } postmaster_address = postmaster at example.com protocols = imap pop3 service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { mode = 0600 user = vmail } user = dovecot } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 995 ssl = yes } } ssl = required ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_cipher_list = PROFILE=SYSTEM ssl_key = # hidden, use -P to show it userdb { driver = passwd } userdb { args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n driver = static } protocol lmtp { mail_plugins = quota acl sieve quota } protocol lda { mail_plugins = quota acl sieve } protocol imap { mail_plugins = acl quota imap_acl quota acl imap_quota }

2 1

dovecot.conf "local hostname" uses only one resolved value
by James 14 Mar '19

14 Mar '19

https://wiki.dovecot.org/SSL/DovecotConfiguration#Different_certificates_pe… says: local 192.0.2.10 { # instead of IP you can also use hostname, which will be resolved However if the name resolves to multiple values only one is used. Test. Choose any name with multiple values, I created a local name: $ nslookup multi.lan Server: 127.0.0.1 Address: 127.0.0.1#53 Name: multi.lan Address: 192.168.1.2 Name: multi.lan Address: 192.168.1.3 Name: multi.lan Address: 192.168.1.1 Minimal dovecot.conf: local multi.lan { protocol imap { ssl_cert = </path/to/certs/multi.lan.crt ssl_key = </path/to/certs/multi.lan.key } } $ dovecot -n -c dovecot.conf # 2.3.5 (513208660): dovecot.conf ... local 192.168.1.2 { protocol imap { ssl_cert = </path/to/certs/multi.crt ssl_key = # hidden, use -P to show it } } Only 192.168.1.2 appears. In my real case with A and AAAA records, only the AAAA record is used. Testing with "openssl s_client -starttls imap ..." gives me the wrong certificate for the IPv4 address. Workaround: specify all addresses and do not use lookup. James.

1 0

dovecot/config processes one more time - which are safe to kill?
by Arkadiusz Miśkiewicz 14 Mar '19

14 Mar '19

Hello. The problem with dovecot/config processes never ending and spawning new one on each reload (https://www.dovecot.org/list/dovecot/2016-November/106058.html) is becoming a problem here: # ps aux|grep dovecot/config|wc -l 206 That's a lot of wasted memory - dovecot/config processes ate over 30GB of ram on 64GB box. Before killing dovecot/config processes: # free -m total used free shared buff/cache available Mem: 64437 61656 483 0 2297 after: # free -m total used free shared buff/cache available Mem: 64437 23676 37822 0 2939 Currently on dovecot 2.3.3. I guess it's very low priority to handle that, so: how can I figure out which dovecot/config processes are safe to be killed by external script? Does "all beside 2 newest ones" rule look sane? Thanks, -- Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )

3 5

Quota questions
by Peter Hudec 14 Mar '19

14 Mar '19

Hi all, I’m a little bit confused about the quota plugin in dovecot and fighting the the issues the people had years ago. I spent readingg the old archives and the mailing list for 3 days and not able to get work some features. Single user quota is fine and simple, the group quota /for example domain based/ makes me unhappy. Setup: CentOS7, dovecot comunity repo, dovecot 2.3.5 1) domain quota recalc domain quota recalc do not work properly. The domain qouta usage is worknig well, hwhen receiving/deleting mail, generaly if the operations are incremental. But if I run domain quota recalc, the doveadm is setting the domain quota after each user calculation, that means the domain quota is set to the last user. 2) multiple quota roots and rules According the documentation, there could be possible, from the sample configuration file # Multiple quota roots are also possible, for example this gives each user # their own 100MB quota and one shared 1GB quota within the domain plugin { quota = dict:User quota::proxy::quota quota2 = dict:Group quota:%d:proxy::quota_domain quota_rule = *:storage=1024M quota2_rule = *:storage=2048M } But If I run [TEST] root(a)mail-store01.test.host.sk: /etc/dovecot # doveadm quota get -u '*' Username Quota name Type Value Limit % test01(a)test.host.sk User quota STORAGE 1 1024 0 test01(a)test.host.sk User quota MESSAGE 1 - 0 test01(a)test.host.sk Group quota STORAGE 7 - 0 test01(a)test.host.sk Group quota MESSAGE 3 - 0 test03(a)test.host.sk User quota STORAGE 7 1024 0 test03(a)test.host.sk User quota MESSAGE 3 - 0 test03(a)test.host.sk Group quota STORAGE 7 - 0 test03(a)test.host.sk Group quota MESSAGE 3 - 0 The idea is to have overall domain quota, but for user able to set it’s personal quota. regards Peter

2 3

dovecot-keywords are not preserved any more when moving mails between folders
by Piper Andreas 14 Mar '19

14 Mar '19

Hello, after an upgrade of dovecot-2.2.5 to dovecot-2.3.4 the dovecot-keywords, which in my case are set by thunderbird, are not preserved any more when moving a mail between folders. Are there any ideas, what may be the reason. Thanks for any hints on that, Andreas 'doveconf -n' gives: # 2.3.4 (0ecbaf23d): /etc/opt/csw/dovecot/dovecot.conf # Pigeonhole version 0.5.4 (60b0f48d) # OS: SunOS 5.11 i86pc # Hostname: xxxxx.hrz.uni-marburg.de auth_cache_negative_ttl = 0 auth_cache_size = 10 M auth_master_user_separator = * auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_ auth_username_format = %u auth_worker_max_count = 1024 base_dir = /var/run/dovecot/ default_vsz_limit = 1 G first_valid_gid = 30000 first_valid_uid = 30000 imap_max_line_length = 640 k mail_debug = yes mail_location = maildir:%h/.maildir mail_plugins = " mail_log notify" 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 { hidden = no inbox = yes list = yes location = maildir:%h/.maildir prefix = separator = / subscriptions = yes type = private } namespace inbox { hidden = yes inbox = no list = no location = maildir:%h/.maildir prefix = mail/ separator = / subscriptions = no type = private } passdb { args = /etc/dovecot.deny deny = yes driver = passwd-file } passdb { args = /etc/opt/csw/dovecot/private/passwd.masterusers driver = passwd-file master = yes } passdb { args = /etc/opt/csw/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve sieve_default = /var/lib/dovecot/default.sieve } pop3_uidl_format = %08Xv%08Xu postmaster_address = postmaster(a)hrz.uni-marburg.de protocols = imap pop3 lmtp sieve service auth-worker { user = $default_internal_user } service auth { client_limit = 6000 } service imap-login { process_min_avail = 64 service_count = 0 } service imap { process_limit = 4096 } service lmtp { inet_listener lmtp { port = 24 } } service managesieve-login { inet_listener sieve { port = 4190 } } ssl_cert = </etc/opt/csw/ssl/certs/imap+pop.hrz.uni-marburg.de.pem ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { args = /etc/opt/csw/dovecot/dovecot-ldap-userdb.conf.ext driver = ldap } protocol imap { mail_max_userip_connections = 25 ssl_cert = </etc/opt/csw/ssl/certs/imap+pop.hrz.uni-marburg.de.pem ssl_key = # hidden, use -P to show it } protocol lmtp { mail_plugins = " mail_log notify sieve" } protocol pop3 { ssl_cert = </etc/opt/csw/ssl/certs/imap+pop.hrz.uni-marburg.de.pem ssl_key = # hidden, use -P to show it }

5 8

replication dropped imap flags
by Patrick Cernko 14 Mar '19

14 Mar '19

Hi list, I think, I found a bug in the replication setup, that drops (custom) flags like Thunderbird labels. I have set up a simple 2 node setup to reproduce and explain it: Host adove.mpi-klsb.mpg.de and bdove.mpi-klsb.mpg.de (doveconf -n attached) have dovecot-imapd (from repo.dovecot.org) installed on an ext4 filesystem. They only have one account "test" via /etc/dovecot/userdb ("test:testpassword:::Test User::/bin/bash:"). It's mailbox contains one message, that is flagged with "$label1": doveadm -f flow fetch -u test 'guid flags' ALL guid=d1516a2b5c08fc5b541d00005a350039 flags=\Recent $label1 Now I simulate a node reinstall on adove by uninstalling dovecot, removing all remnants, reinstalling and configuring it again: apt purge dovecot-core dovecot-imapd rm -rf /var/vmail /var/lib/dovecot /etc/dovecot apt install dovecot-imapd # disable system auth : > /etc/dovecot/conf.d/auth-system.conf.ext # create /var/vmail install -d -o nobody -g nogroup -m 700 /var/vmail # create userdb echo 'test:testpassword:::Test User::/bin/bash:' > /etc/dovecot/userdb # create /etc/dovecot/local.conf # not described here, the resulting doveconf -n is attached! service dovecot restart When I check the flags of the mail of user test now, the "$label1" is disapeared on both machines, even after "doveadm replicator replicate -f test": doveadm -f flow fetch -u test 'guid flags' ALL guid=d1516a2b5c08fc5b541d00005a350039 flags=\Recent Any hints what I am doing wrong here or is this really a bug? Best, -- Patrick Cernko <pcernko(a)mpi-klsb.mpg.de> +49 681 9325 5815 Joint Administration: Information Services and Technology Max-Planck-Institute fuer Informatik & Softwaresysteme

1 2

Am I right to assume certificate renewal with the same filename requires a dovecot reload/restart
by Guido Goluke, MajorLabel 14 Mar '19

14 Mar '19

Running dovecot 2.2, apologies if this question has been asked before: I've done the research but couldn't find anything. I run a server that uses dovecot as a MUA for Postfix and have a Let's Encrypt certificate that auto-renews through certbot on Ubuntu server 16.04. Dovecot did not pick up on the new certificate for the hostname. It did after a restart. To be clear: Let's Encrypt overwrites the previous certificate using the same path and filename. Am I right to assume that Dovecot needs a reload/restart after the certificate has been renewed in order to 'pick up' on the new certificate and if so, would I require a reload or a restart? Thank you in advance -- MajorLabel

4 8

Unable to set quota-fs plugin
by Eric Grammatico 14 Mar '19

14 Mar '19

Hello There, I am try desperatly to setup quota-fs plugin in Dovecot. I have the following configuration in place: /etc/dovecot/conf.d/10-mail.conf:mail_plugins = $mail_plugins quota zlib /etc/dovecot/conf.d/20-imap.conf: mail_plugins = $mail_plugins imap_quota /etc/dovecot/conf.d/90-quota.conf: plugin { #quota = dirsize:User quota #quota = maildir:User quota #quota = dict:User quota::proxy::quota #quota = fs:User quota:user quota = fs:user } The logs report the following error each time quota is requested: Mar 11 17:56:20 mail.xxxxxxx.xx dovecot[4923]: imap(xxxx): Error: Failed to get quota resource STORAGE: quota-fs: quotactl(Q_GETQUOTA, /dev/vda1) failed: No such file or directory I have no idea of which file or directory is missing. Any advice is welcome. Thanks and best regards, - Eric Grammatico _/)

3 11

rsync /old/server new/server ?
by Voytek Eymont 14 Mar '19

14 Mar '19

I have Centos 7 with dovecot/postfix/mysql Maildir I want to bring in a new server, new server will have same hostname as current, but, different IP I was intending to rsync -avzhe ssh vmail@oldserver:/var/vmail/vmail1 /var/vmail/vmail1 and, then, re run as necessary when/if mail still arrives on old server is that "a good plan" ...? TIA, V

4 3

recipient bcc and dovecot
by ＠lbutlr 13 Mar '19

13 Mar '19

I have a recipient_bcc_maps which contains a bcc map that is updated everyday: rbcc.pcre: if !/backup.*@/ /^([^+_]*).*(a)([^.]*)/ backup+071.${1}-${2}(a)adomain.tld endif the 071 portion is changed each day to the current day of the year. Everything works, but I get an error from dovecot on every message: lda(backup(a)adomain.tld): Error: User initialization failed: Namespace '': Ambiguous mail location setting, don't know what to do with it: /usr/local/virtual/backup(a)adomain.tld (try prefixing it with mbox: or maildir:) The mail is delivered two the right directory anyway, but after a temporary failure. I'd like to eliminate the error. the backup user is not a 'real' user (it is not in the lookup map) so should I bypass dovecot entirely in delivering these messages? (and if so, how) If not, where/how would I add the prefix maildir: Is there something I can add to dovecot to specifically deal with messages coming in to backup(a)adomain.tld and add the maildir: specification there? (Still on dovecot 2.2.35) -- And sometimes there's a short cut. A door or a gate. Some standing stones. A tree cleft by lightning, a filing cabinet. Maybe just a spot on some moorland somewhere... A place where THERE is very nearly HERE... If some people knew where such a spot was, if they had experience of what happens when here and there become entangled, then they might - if they knew how - mark such a spot with certain stones. In the hope that enough daft buggers would take it as a warning and keep away. (Lords and Ladies)

2 3

sieve vacation to an alias group
by Monis Monther 13 Mar '19

13 Mar '19

Hi, We have an alias group named xyz(a)example.com, this alias group has 3 actual users a(a)example.com, b(a)example.com and c(a)example.com We set vacation rule on the generic sieve rule, the problem is that 3 responses are sent to the original sender. (obviously because the rule is being executed with each user in the alias group) Is it possible to set auto response only once, we tried the ( :days 1) option but still all 3 respond back. How can such a setup be achieved. (Single auto response to an alias group) CentOS 7.5 dovecot-pigeonhole-2.3.4.1-1.x86_64 dovecot-2.3.4.1-1.x86_64 postfix 2.10-1 -- Best Regards Monis

4 14

Delayed flags changes over IDLE
by Kostya Vasilyev 13 Mar '19

13 Mar '19

Hello, I'm experiencing slow flags changes over IMAP IDLE: - If I start an IDLE session / command - Change the flags of some messages via another email app - Dovecot can take a minute or more to notify the IDLE connection about flags changes If I use another email app to add or remove a message, Dovecot sends that (EXISTS / EXPUNGE) instantly and also flushes the (so far delayed) flags changes. So it does "know" already. The system is Debian Testing, 64 bit, file system is ext4. Dovecot is 2.3.4.1 (f79e8e7e4) - I believe from Debian repos (I had Dovecot's own repo added at some point, disabled now). My mail is stored under ~/mail/.imap (not sure what this format is called), I mean not "single file mbox". I have not changed any IDLE related config settings: doveconf | grep -i idle default_idle_kill = 1 mins director_ping_idle_timeout = 30 secs imap_idle_notify_interval = 2 mins imapc_max_idle_time = 29 mins mailbox_idle_check_interval = 30 secs What can I do to make Dovecot notify IDLE clients about flags changes - more quickly? Preferably near-instant? -- Kostya Vasilyev kman(a)fastmail.com

3 9

“doveadm mailbox” command fails with UTF-8 mailboxes
by Felipe Gasper 13 Mar '19

13 Mar '19

Hello, I’ve got a strange misconfiguration where the following command: doveadm -f pager mailbox status -u spamutf8 'messages vsize guid' INBOX 'INBOX.*' … fails with error code 68, saying that it can’t find one of the mailboxes. (It lists the user’s other mailboxes.) The name of the mailbox in question is saved to disk in UTF-8 rather than mUTF-7, but strace shows that doveadm is stat()ing the mUTF-7 path; the failure of that stat() is, assumedly, what causes doveadm to report the error status. I’ve tried to paw through the source code to see what might be causing this but haven’t made much headway. Can someone here point out where the misconfiguration might be that is causing doveadm to stat() the mUTF-7 path rather than UTF-8? Or perhaps offer any tips as to how I might diagnose what’s going on? What causes doveadm to stat() one path or the other? Thank you! -Felipe Gasper Mississauga, ON

5 9

Inbox quota usage doubled when mailbox_list_index enabled, under some circumstances
by Chris Dillon 13 Mar '19

13 Mar '19

Hello, I searched through the list archives for anything that appeared to be similar to this but I didn't find any good matches. I apologize if this has been brought up before. Beginning with Dovecot 2.2.34, reported quota usage of a user's inbox can be doubled when the following criteria are met: 1) quota plugin is enabled 2) mailbox_list_index=yes 3) A sub-folder of the inbox exists whose name also matches the prefix (for example, "INBOX.Test"), even if that folder has no contents. (Apparently, some mail clients such as K-9 Mail on Android can create these folders automatically) Downgrading to 2.2.33.2 allows this configuration to work normally. I looked through the changes in git between 2.2.33.2 and 2.2.34 and they appeared extensive, so unfortunately I wasn't able to pinpoint a specific change that caused this. Reproduced on a CentOS 7 server with Dovecot 2.2.34 built from git sources according to https://wiki2.dovecot.org/CompilingSource#Compiling_Dovecot_From_Git using the following minimal configuration: ========== root@centos7 [~]# dovecot -n # 2.2.34 (874deae): /usr/local/etc/dovecot/dovecot.conf # OS: Linux 3.10.0-862.9.1.el7.x86_64 x86_64 CentOS Linux release 7.5.1804 (Core) # Hostname: centos7.local mail_location = maildir:~/Maildir mail_plugins = quota mailbox_list_index = yes namespace inbox { inbox = yes location = prefix = INBOX. separator = . } passdb { driver = pam } plugin { quota = maildir:Mailbox } userdb { driver = passwd } ========== With the system user "myuser" and a minimal Maildir setup containing 1 email in the inbox, and one sub-folder named "INBOX.Test": ========== root@centos7 [~]# ls -lAR /home/myuser/Maildir /home/myuser/Maildir: total 4 drwxr-xr-x. 2 myuser myuser 77 Jul 25 09:36 cur drwxr-xr-x. 5 myuser myuser 56 Jul 25 15:19 .INBOX.Test -rw-r--r--. 1 myuser myuser 14 Jul 25 15:19 maildirsize drwxr-xr-x. 2 myuser myuser 6 Jul 25 09:36 new drwxr-xr-x. 2 myuser myuser 6 Jul 25 09:36 tmp /home/myuser/Maildir/cur: total 12416 -rw-r--r--. 1 myuser myuser 12712627 Jul 25 09:07 1532529376.M543965P58007.centos7.local,S=12712627,W=12877782:2,S /home/myuser/Maildir/.INBOX.Test: total 0 drwxr-xr-x. 2 myuser myuser 6 Jul 25 09:36 cur -rw-r--r--. 1 myuser myuser 0 Jul 25 09:36 maildirfolder drwxr-xr-x. 2 myuser myuser 6 Jul 25 09:36 new drwxr-xr-x. 2 myuser myuser 6 Jul 25 09:36 tmp /home/myuser/Maildir/.INBOX.Test/cur: total 0 /home/myuser/Maildir/.INBOX.Test/new: total 0 /home/myuser/Maildir/.INBOX.Test/tmp: total 0 /home/myuser/Maildir/new: total 0 /home/myuser/Maildir/tmp: total 0 ========== Given this configuration, when "mailbox_list_index" is enabled, after quota recalculation, quota reports that there are 2 messages and that double the amount of storage is used: ========== root@centos7 [~]# doveadm quota recalc -u myuser; doveadm quota get -u myuser Quota name Type Value Limit % Mailbox STORAGE 24830 - 0 Mailbox MESSAGE 2 - 0 ========== When "mailbox_list_index" is disabled and quota is recalculated, it will report the message and storage counts correctly: ========== root@centos7 [~]# doveadm -o 'mailbox_list_index=no' quota recalc -u myuser; doveadm quota get -u myuser Quota name Type Value Limit % Mailbox STORAGE 12415 - 0 Mailbox MESSAGE 1 - 0 ========== I am hoping that someone with much more familiarity with the code path involved here could take a look at this issue and possibly submit a fix for it -- that would be greatly appreciated. Please let me know if you need any more details regarding the replication steps, though I hope that I didn't miss anything. Thank you! -- Chris Dillon Technical Analyst III Migrations Specialist cPanel, Inc.

2 3

Dovecot 2.3.4 crash
by azurit＠pobox.sk 13 Mar '19

13 Mar '19

Hi, is this a know problem? Newest Dovecot 2.3.4 package from repo.dovecot.org , Debian Stretch (fully upgraded). Nov 29 14:25:11 server00 dovecot: lmtp(16854): Panic: file ostream-dot.c: line 208 (o_stream_dot_sendv): assertion failed: ((size_t)ret == sent + added) Nov 29 14:25:11 server00 dovecot: lmtp(16854): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0xd25e1) [0x7fa5f7b655e1] -> /usr/lib/dovecot/libdovecot.so.0(+0xd2681) [0x7 fa5f7b65681] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7fa5f7acd093] -> /usr/lib/dovecot/libdovecot.so.0(+0xbb97b) [0x7fa5f7b4e97b] -> /usr/lib/dovecot/libdovecot.so.0(+0x fa4ae) [0x7fa5f7b8d4ae] -> /usr/lib/dovecot/libdovecot.so.0(o_stream_sendv+0x2e) [0x7fa5f7b8da3e] -> /usr/lib/dovecot/libdovecot.so.0(io_stream_copy+0x52) [0x7fa5f7b8e512] -> /usr /lib/dovecot/libdovecot.so.0(o_stream_send_istream+0x58) [0x7fa5f7b8e008] -> /usr/lib/dovecot/libdovecot.so.0(smtp_client_command_send_more+0x1b1) [0x7fa5f7ad7351] -> /usr/lib/dov ecot/libdovecot.so.0(+0x4a096) [0x7fa5f7add096] -> /usr/lib/dovecot/libdovecot.so.0(+0xfd0c3) [0x7fa5f7b900c3] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x75) [0x7fa5f7b 7e5d5] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x109) [0x7fa5f7b7ffd9] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x56) [0x7fa5f7b7e6e6] -> / usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7fa5f7b7e8f8] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7fa5f7af2d43] -> dovecot/lmtp [local DATA](main+ 0x240) [0x565287c30f70] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1) [0x7fa5f77142e1] -> dovecot/lmtp [local DATA](_start+0x2a) [0x565287c310ca] Nov 29 14:25:11 server00 dovecot: lmtp(16854): Fatal: master: service(lmtp): child 16854 killed with signal 6 (core dumps disabled - https://dovecot.org/bugreport.html#coredumps) azur

3 5

Crash in director for secure lmtp proxy connections
by Marcus Fenner 13 Mar '19

13 Mar '19

Hi, After updating some of our director servers from 2.2.36 to 2.3.3 (dcead646b) we experience crashes in about 1/5000 mails in lmtp delivery: Nov 13 12:23:36 Fatal: lmtp(113620): master: service(lmtp): child 113620 killed with signal 6 (core dumped) Nov 13 12:23:36 Panic: lmtp(113623): file ostream-dot.c: line 208 (o_stream_dot_sendv): assertion failed: ((size_t)ret == sent + added) Nov 13 12:23:36 Error: lmtp(113623): Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(+0xe34fb) [0x7f31d89134fb] -> /usr/lib64/dovecot/libdovecot.so.0(+0xe3597) [0x7f31d8913597] -> /usr/lib64/dovecot/libdovecot.so.0(+0x51207) [0x7f31d8881207] -> /usr/lib64/dovecot/libdovecot.so.0(+0x4eeef) [0x7f31d887eeef] -> /usr/lib64/dovecot/libdovecot.so.0(+0x107cf8) [0x7f31d8937cf8] -> /usr/lib64/dovecot/libdovecot.so.0(o_stream_sendv+0x32) [0x7f31d89382c2] -> /usr/lib64/dovecot/libdovecot.so.0(io_stream_copy+0x5a) [0x7f31d8938b6a] -> /usr/lib64/dovecot/libdovecot.so.0(o_stream_send_istream+0x53) [0x7f31d8938873] -> /usr/lib64/dovecot/libdovecot.so.0(smtp_client_command_send_more+0x145) [0x7f31d8890805] -> /usr/lib64/dovecot/libdovecot.so.0(+0x660dd) [0x7f31d88960dd] -> /usr/lib64/dovecot/libssl_iostream_openssl.so(+0xa7e1) [0x7f31d864a7e1] -> /usr/lib64/dovecot/libdovecot.so.0(+0x10a558) [0x7f31d893a558] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x73) [0x7f31d892a203] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x136) [0x7f31d892b8b6] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x50) [0x7f31d892a2b0] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x48) [0x7f31d892a418] -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x17) [0x7f31d88a95a7] -> dovecot/lmtp(main+0x245) [0x555b8b59cea5] -> /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f31d867c413] -> dovecot/lmtp(_start+0x2e) [0x555b8b59cfbe] Nov 13 12:23:36 Fatal: lmtp(113623): master: service(lmtp): child 113623 killed with signal 6 (core dumped) On the backend servers the only message is lmtp(9571): Disconnect from 192.168.1.56: Connection closed (in DATA) This happens for every server with this version every time postfix tries to resend the mail. After removing "starttls=y" from the static passdb entry, the mail is sent successfully. Starting with version 2.3.2 the lmtp proxy uses starttls as well, therefore the error seems to be there. I've not been able to figure out, if this has to do with the content of the mails, because they are from many different sources. Thanks! Marcus

3 2

lmtp 2.3.2.1 segfault with backtrace
by Tom Sommer 13 Mar '19

13 Mar '19

lmtp on Director crash with 2.3.2.1 # gdb /usr/libexec/dovecot/lmtp /var/core/60174 GNU gdb (GDB) Red Hat Enterprise Linux (7.2-92.el6) Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /usr/libexec/dovecot/lmtp...Reading symbols from /usr/lib/debug/usr/libexec/dovecot/lmtp.debug...done. done. [New Thread 60174] Reading symbols from /usr/lib64/dovecot/libdovecot-lda.so.0...Reading symbols from /usr/lib/debug/usr/lib64/dovecot/libdovecot-lda.so.0.0.0.debug...done. done. Loaded symbols for /usr/lib64/dovecot/libdovecot-lda.so.0 Reading symbols from /usr/lib64/dovecot/libdovecot-storage.so.0...Reading symbols from /usr/lib/debug/usr/lib64/dovecot/libdovecot-storage.so.0.0.0.debug...done. done. Loaded symbols for /usr/lib64/dovecot/libdovecot-storage.so.0 Reading symbols from /usr/lib64/dovecot/libdovecot.so.0...Reading symbols from /usr/lib/debug/usr/lib64/dovecot/libdovecot.so.0.0.0.debug...done. done. Loaded symbols for /usr/lib64/dovecot/libdovecot.so.0 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib64/libc.so.6 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/librt.so.1 Reading symbols from /lib64/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libdl.so.2 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/ld-linux-x86-64.so.2 Reading symbols from /lib64/libpthread.so.0...(no debugging symbols found)...done. [Thread debugging using libthread_db enabled] Loaded symbols for /lib64/libpthread.so.0 Reading symbols from /usr/lib64/dovecot/libssl_iostream_openssl.so...Reading symbols from /usr/lib/debug/usr/lib64/dovecot/libssl_iostream_openssl.so.debug...done. done. Loaded symbols for /usr/lib64/dovecot/libssl_iostream_openssl.so Reading symbols from /usr/lib64/libssl.so.10...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libssl.so.10 Reading symbols from /usr/lib64/libcrypto.so.10...(no debugging symbols found)...done. Loaded symbols for /usr/lib64/libcrypto.so.10 Reading symbols from /lib64/libgssapi_krb5.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libgssapi_krb5.so.2 Reading symbols from /lib64/libkrb5.so.3...(no debugging symbols found)...done. Loaded symbols for /lib64/libkrb5.so.3 Reading symbols from /lib64/libcom_err.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libcom_err.so.2 Reading symbols from /lib64/libk5crypto.so.3...(no debugging symbols found)...done. Loaded symbols for /lib64/libk5crypto.so.3 Reading symbols from /lib64/libz.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/libz.so.1 Reading symbols from /lib64/libkrb5support.so.0...(no debugging symbols found)...done. Loaded symbols for /lib64/libkrb5support.so.0 Reading symbols from /lib64/libkeyutils.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/libkeyutils.so.1 Reading symbols from /lib64/libresolv.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libresolv.so.2 Reading symbols from /lib64/libselinux.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/libselinux.so.1 Core was generated by `dovecot/lmtp'. Program terminated with signal 11, Segmentation fault. #0 smtp_client_command_set_replies (cmd=0x0, replies=1) at smtp-client-command.c:401 401 i_assert(cmd->replies_expected == 1 || Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.212.el6.x86_64 keyutils-libs-1.4-5.el6.x86_64 krb5-libs-1.10.3-65.el6.x86_64 libcom_err-1.41.12-24.el6.x86_64 libselinux-2.0.94-7.el6.x86_64 openssl-1.0.1e-57.el6.x86_64 zlib-1.2.3-29.el6.x86_64 (gdb) bt full #0 smtp_client_command_set_replies (cmd=0x0, replies=1) at smtp-client-command.c:401 __func__ = "smtp_client_command_set_replies" #1 0x00007f5d14f40f3f in smtp_client_transaction_data_cb (reply=0x7ffe5cd19650, trans=0x7f5d176ae2b8) at smtp-client-transaction.c:658 conn = 0x7f5d176ade80 rcpt = 0x7f5d176ae560 i = <value optimized out> count = 1 #2 0x00007f5d14f3e941 in smtp_client_command_fail_reply (_cmd=<value optimized out>, reply=0x7ffe5cd19650) at smtp-client-command.c:299 cmd = 0x7f5d17600d18 tmp_cmd = <value optimized out> conn = 0x7f5d176ade80 state = <value optimized out> callback = 0x7f5d14f40e80 <smtp_client_transaction_data_cb> #3 0x00007f5d14f4113f in smtp_client_transaction_fail_reply (trans=0x7f5d176ae2b8, reply=0x7ffe5cd19650) at smtp-client-transaction.c:365 conn = 0x7f5d176ade80 rcpts = <value optimized out> i = <value optimized out> count = <value optimized out> __func__ = "smtp_client_transaction_fail_reply" #4 0x00007f5d14f41442 in smtp_client_transaction_timeout (trans=0x7f5d176ae2b8) at smtp-client-transaction.c:419 reply = {status = 451, enhanced_code = {x = 4, y = 4, z = 0}, text_lines = 0x7f5d1759c090} #5 0x00007f5d14fdbe7b in io_loop_handle_timeouts_real (ioloop=0x7f5d175a4c80) at ioloop.c:641 timeout = 0x7f5d176299d0 tv = {tv_sec = 0, tv_usec = 0} tv_call = {tv_sec = 1534202969, tv_usec = 770866} t_id = 3 item = 0x7f5d176299d0 #6 io_loop_handle_timeouts (ioloop=0x7f5d175a4c80) at ioloop.c:655 _data_stack_cur_id = 2 #7 0x00007f5d14fdd667 in io_loop_handler_run_internal (ioloop=0x7f5d175a4c80) at ioloop-epoll.c:195 ctx = 0x7f5d175af300 events = <value optimized out> event = <value optimized out> list = <value optimized out> io = <value optimized out> tv = {tv_sec = 34, tv_usec = 105308} events_count = <value optimized out> msecs = <value optimized out> ret = 0 i = <value optimized out> call = <value optimized out> __func__ = "io_loop_handler_run_internal" #8 0x00007f5d14fdb7c5 in io_loop_handler_run (ioloop=0x7f5d175a4c80) at ioloop.c:726 __func__ = "io_loop_handler_run" #9 0x00007f5d14fdb9e8 in io_loop_run (ioloop=0x7f5d175a4c80) at ioloop.c:699 __func__ = "io_loop_run" #10 0x00007f5d14f58963 in master_service_run (service=0x7f5d175a4b10, callback=<value optimized out>) at master-service.c:767 No locals. #11 0x00007f5d159eb584 in main (argc=1, argv=0x7f5d175a48a0) at main.c:158 set_roots = {0x7f5d15262e20, 0x7f5d157c2040, 0x7f5d15bf1540, 0x0} service_flags = <value optimized out> storage_service_flags = <value optimized out> tmp_base_dir = 0x7f5d1759c040 "erver not answering (transaction timed out while waiting for reply to DATA)" c = <value optimized out> error = <value optimized out> -- Tom

3 3

2.3.3: Panic: file ostream-zlib.c: line 37 (o_stream_zlib_close): assertion failed
by Tom Sommer 13 Mar '19

13 Mar '19

I see this in my logs after 2.3.3: using zlib plugin, ofc. Oct 02 10:01:39 imap(user(a)example.com)<50643></2k4Sjp3vMqC496W>: Panic: file ostream-zlib.c: line 37 (o_stream_zlib_close): assertion failed: (zstream->ostream.finished || zstream->ostream.ostream.stream_errno != 0 || zstream->ostream.error_handling_disabled) Oct 02 10:01:39 imap(user(a)example.com)<50643></2k4Sjp3vMqC496W>: Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(+0xce56a) [0x7f442487556a] -> /usr/lib64/dovecot/libdovecot.so.0(+0xce5b1) [0x7f44248755b1] -> /usr/lib64/dovecot/libdovecot.so.0(+0x3d941) [0x7f44247e4941] -> /usr/lib64/dovecot/lib20_zlib_plugin.so(+0x5cdf) [0x7f44233c4cdf] -> /usr/lib64/dovecot/libdovecot.so.0(+0xf4b46) [0x7f442489bb46] -> /usr/lib64/dovecot/libdovecot.so.0(o_stream_destroy+0x13) [0x7f442489be83] -> /usr/lib64/dovecot/libdovecot-storage.so.0(maildir_save_finish+0x173) [0x7f4424b93973] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mailbox_save_cancel+0x36) [0x7f4424b68696] -> dovecot/imap [user(a)example.com X.X.X.X APPEND](+0xede9) [0x55a9d7e86de9] -> dovecot/imap [user(a)example.com X.X.X.X APPEND](command_exec+0x65) [0x55a9d7e956e5] -> dovecot/imap [user(a)example.com X.X.X.X APPEND](+0xf9e6) [0x55a9d7e879e6] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x55) [0x7f442488c275] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xbf) [0x7f442488e13f] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x55) [0x7f442488c365] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f442488c588] -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f4424808053] -> dovecot/imap [user(a)example.com X.X.X.X APPEND](main+0x32d) [0x55a9d7ea20dd] -> /lib64/libc.so.6(__libc_start_main+0x100) [0x7f4424431d20] -> dovecot/imap [user(a)example.com X.X.X.X APPEND](+0xe419) [0x55a9d7e86419] No clue how to reproduce -- Tom

3 2