January 2019 - dovecot

Dovecot Submission Proxy Auth
by Paul Hecker 12 Jan '19

12 Jan '19

Hi, Dovecot 2.3.1 (8e2f634). Could not get Dovecot to forward the (plain) authentication to the SMTP server using submission. Reason why I need it is sender spoofing (do not want my employees to send messages in behalf of me). In exim I can disable sender spoofing with the authenticated user. When sending through dovecot, exim either does not accept the email (need auth) or relay every sender address (because relaying from localhost). Am I missing a setting or do I need any additional field in the (MySQL) user_query/password_query to forward the password? You can find my config here: https://gist.github.com/lluuaapp/7daddf761131da47237b0f45e6bab5a8 Thanks, Paul

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Fatal: master: service(indexer-worker): child 493 killed with signal 11 (core dumped)
by Tim Mohlmann 12 Jan '19

12 Jan '19

Dear list, We been having some issues where the indexer-worker is crashing. This happens on production servers which are handling a slight amount of mail, but is also reproducible by moving messages. Also, users on my server are complaining about "Trashed" items coming back etc. Some details: - Dovecot 2.3.2.1 in alpine:3.8 based Docker container. As part of the Mailu distribution. (https://github.com/Mailu/Mailu) - I've first seen this issues on my production server, which stores mail on GlusterFS - I've been able to reproduce running the Docker container on a Virtual machine, using local storage. - There is another Mailu user reporting the same problem on a different VM provider / disk infrastructure: https://github.com/Mailu/Mailu/issues/751 - Libc: musl-1.1.19-r10 Output of dovecot -n: # dovecot -n # 2.3.2.1 (0719df592): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.2 (7704de5e) # OS: Linux 4.16.3-301.fc28.x86_64 x86_64 ext4 # Hostname: 98a2726271d3 auth_mechanisms = plain login disable_plaintext_auth = no first_valid_gid = 8 first_valid_uid = 8 hostname = mail.usrpro.io log_path = /dev/stderr mail_access_groups = mail mail_gid = mail mail_home = /mail/%u mail_location = maildir:/mail/%u mail_plugins = " fts fts_lucene quota quota_clone zlib" mail_privileged_group = mail mail_uid = mail mail_vsize_bg_after_count = 100 maildir_stat_dirs = yes 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 spamtest spamtestplus editheader imapsieve vnd.dovecot.imapsieve namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = /etc/dovecot/auth.conf driver = dict } plugin { fts = lucene fts_autoindex = yes fts_autoindex_exclude = \Junk fts_lucene = whitespace_chars=@. imapsieve_mailbox1_before = file:/conf/report-spam.sieve imapsieve_mailbox1_causes = COPY imapsieve_mailbox1_name = Junk imapsieve_mailbox2_before = file:/conf/report-ham.sieve imapsieve_mailbox2_causes = COPY imapsieve_mailbox2_from = Junk imapsieve_mailbox2_name = * quota = count:User quota quota_clone_dict = proxy:/tmp/podop.socket:quota quota_vsizes = yes sieve = file:~/sieve;active=~/.dovecot.sieve sieve_before = dict:proxy:/tmp/podop.socket:sieve sieve_execute_bin_dir = /conf/bin sieve_extensions = +spamtest +spamtestplus +editheader sieve_global_extensions = +vnd.dovecot.execute sieve_plugins = sieve_imapsieve sieve_extprograms sieve_spamtest_max_value = 15 sieve_spamtest_status_header = X-Spam-Level sieve_spamtest_status_type = strlen sieve_vacation_dont_check_recipient = yes sieve_vacation_send_from_recipient = yes } postmaster_address = admin(a)usrpro.io protocols = imap pop3 lmtp sieve service auth-worker { unix_listener auth-worker { group = mail mode = 0660 user = dovecot } user = mail } service auth { user = dovecot } service imap-login { inet_listener imap { port = 143 } } service lmtp { inet_listener lmtp { port = 2525 } } service managesieve-login { inet_listener sieve { port = 4190 } } submission_host = 192.168.203.6 userdb { args = /etc/dovecot/auth.conf driver = dict } protocol imap { mail_plugins = " fts fts_lucene quota quota_clone zlib imap_quota imap_sieve" } protocol lmtp { mail_plugins = " fts fts_lucene quota quota_clone zlib sieve" recipient_delimiter = + } And the actual error log: imap_1 | Dec 19 16:31:08 indexer-worker(admin(a)usrpro.io)<490><m+t5VmJ93K7AqMsG:grc9HUxyGlzqAQAANEhNiw>: Fatal: master: service(indexer-worker): child 490 killed with signal 11 (core dumped) imap_1 | Dec 19 16:31:09 indexer-worker(admin(a)usrpro.io)<493><m+t5VmJ93K7AqMsG:HRLEK0xyGlztAQAANEhNiw>: Error: lucene index /mail/admin(a)usrpro.io/lucene-indexes: IndexWriter() failed (#1): Lock obtain timed out imap_1 | Dec 19 16:31:09 indexer-worker(admin(a)usrpro.io)<493><m+t5VmJ93K7AqMsG:HRLEK0xyGlztAQAANEhNiw>: Error: Mailbox INBOX: Mail search failed: Internal error occurred. Refer to server log for more information. [2018-12-19 16:31:08] imap_1 | Dec 19 16:31:09 indexer-worker(admin(a)usrpro.io)<493><m+t5VmJ93K7AqMsG:HRLEK0xyGlztAQAANEhNiw>: Error: Mailbox INBOX: Transaction commit failed: FTS transaction commit failed: backend deinit (attempted to index 1 messages (UIDs 1299..1299)) imap_1 | Dec 19 16:31:10 indexer-worker(admin(a)usrpro.io)<493><m+t5VmJ93K7AqMsG:GKWdMU1yGlztAQAANEhNiw>: Fatal: master: service(indexer-worker): child 493 killed with signal 11 (core dumped) imap_1 | Dec 19 16:31:10 indexer: Error: Indexer worker disconnected, discarding 1 requests for admin(a)usrpro.io imap_1 | Dec 19 16:31:11 indexer-worker(admin(a)usrpro.io)<494><m+t5VmJ93K7AqMsG:MRCzBE5yGlzuAQAANEhNiw>: Error: lucene index /mail/admin(a)usrpro.io/lucene-indexes: IndexWriter() failed (#1): Lock obtain timed out imap_1 | Dec 19 16:31:11 indexer-worker(admin(a)usrpro.io)<494><m+t5VmJ93K7AqMsG:MRCzBE5yGlzuAQAANEhNiw>: Error: Mailbox INBOX: Mail search failed: Internal error occurred. Refer to server log for more information. [2018-12-19 16:31:10] imap_1 | Dec 19 16:31:11 indexer-worker(admin(a)usrpro.io)<494><m+t5VmJ93K7AqMsG:MRCzBE5yGlzuAQAANEhNiw>: Error: Mailbox INBOX: Transaction commit failed: FTS transaction commit failed: backend deinit (attempted to index 1 messages (UIDs 1310..1310)) imap_1 | Dec 19 16:31:11 indexer: Error: Indexer worker disconnected, discarding 1 requests for admin(a)usrpro.io I managed to find a core dump file, which appeared outside of the container. So I copied it back in, installed and ran gdb: GNU gdb (GDB) 8.0.1 Copyright (C) 2017 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-alpine-linux-musl". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/libexec/dovecot/indexer-worker...(no debugging symbols found)...done. [New LWP 1075] warning: Can't read pathname for load map: No error information. Core was generated by `dovecot/indexer-worker'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007fbd9a31c11a in free () from /lib/ld-musl-x86_64.so.1 So this seems musl related. I installed musl-dbg and ran again: GNU gdb (GDB) 8.0.1 Copyright (C) 2017 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-alpine-linux-musl". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/libexec/dovecot/indexer-worker...(no debugging symbols found)...done. [New LWP 1075] warning: Can't read pathname for load map: No error information. Core was generated by `dovecot/indexer-worker'. Program terminated with signal SIGSEGV, Segmentation fault. #0 a_crash () at ./arch/x86_64/atomic_arch.h:108 108 ./arch/x86_64/atomic_arch.h: No such file or directory. Now I'm kinda lost in space. I don't know where that header file is. Tried running "find" on the filesystem and a google search. But nothing specific showed up. I am starting to feel this bug is more musl related than Dovecot. Since this has bitten our project more in the past, I'm considering to move the project to Debian based images. But I want to be 100% sure this is not a dovecot bug. Note, earlier I created an image with Alpine:edge with musl 1.1.20-r2 and Dovecot 2.3.3. Running that image I saw the same error symptoms (Was just a hopeful trail and error). I did not do any debugging on that one. Thanks in advance! Tim

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Enable compression only for namespace with mdbox storage
by Marc Roos 11 Jan '19

11 Jan '19

I have a namespace with mbox and a namespace with mdbox mailboxes. How do I only enable the compression for the mdbox mailboxes?

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repo.dovecot.org expired certificate
by Filipe Carvalho 10 Jan '19

10 Jan '19

Hello, Not sure if this is the right place to post this, but the ssl certificate of the repo.dovecot.org server expired on the 9th of January. It's giving an error via the browser and via the apt command in Debian: W: Failed to fetch https://repo.dovecot.org/ce-2.3-latest/debian/jessie/dists/jessie/main/bina… server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none Cheers! Filipe Carvalho -- UP Digital Filipe Carvalho Infraestruturas Tecnológicas / IT infrastructures filipec(a)uporto.pt <mailto:filipec@uporto.pt>

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BUG: cannot move messages to root mailfolder in namespace "There can be only one namespace with inbox=yes"
by Marc Roos 09 Jan '19

09 Jan '19

I can only move messages to a root namespace folder when specifying inbox=yes. That is strange because it is not even the inbox. I don't even get why it is not by default possible, maybe bug there? You have made the mistake of overloading the use of a parameter inbox=yes (or not creating a parameter to tell folder can be used to move messages to), there is indeed only one folder that gets incoming messages delivered to, and that is the inbox=yes. You should have created a 2nd parameter specifying if a folder should be allowed to store mail. (I have been running this dovecot server for 20 years or so, and I am really surprised about still running into issues on such basic things as trying to put folders onto different storage. Not to mention the lack of help you can get here. Is there some roadmap, features implementation overview available? Can you make public issues on github?)

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File permissions
by Rupert Gallagher 09 Jan '19

09 Jan '19

Hello, I am mosty done with the upgrade, but there is a problem that keeps me awake at night: file ownership and permissions. It would be most helpful to have the following from Aki's live system: ls -halFR /var/run/dovecot

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RE: Dovecot (doveadm, ssl, sync) - SSL error
by Arkadiusz Majewski 08 Jan '19

08 Jan '19

Hello! dsync SSL still doesn't work for replication, so I've disabled it and tried to sync without. But I have a problem with temp directory. Is it possible to change path to temp folder? I don't want to set permissions but change temporary folder for replication. Thanks in advance. dovecot: doveadm: Error: safe_mkstemp(/tmp/dovecot.doveadm.) failed: Permission denied Arkadiusz Majewski From: Arkadiusz Majewski <majewsa(a)gmail.com> Sent: Sunday, December 3, 2017 7:38 PM To: 'dovecot(a)dovecot.org' <dovecot(a)dovecot.org> Subject: Dovecot (doveadm, ssl, sync) - SSL error Hello! I've got a problem to run syncing between both dovecot services on the separate servers. The error indicates to the problem with SSL. Directly using openssl command to connect from one server to other and vice versa is passed without any errors. OS: FreeBSD 11.1-RELEASE-p4 Dovecot: 2.2.33.2_2 and the older one dovecot-2.2.32.1_1 (or similar) - build by ports. OpenSSL: 1.0.2k-freebsd 26 Jan 2017 dovecot: doveadm(10.18.1.15): Error: doveadm client disconnected before handshake: SSL_accept() failed: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol dovecot.conf (on both servers): mail_plugins = $mail_plugins notify replication service replicator { process_min_avail = 1 } service aggregator { fifo_listener replication-notify-fifo { user = dovecot } unix_listener replication-notify { user = dovecot } } service replicator { unix_listener replicator-doveadm { mode = 0600 } } replication_max_conns = 10 service doveadm { inet_listener { port = 12130 ssl = yes } } ssl = required ssl_protocols = SSLv3 TLSv1 TLSv1.1 TLSv1.2 ssl_cert = </usr/local/etc/dovecot/ssl/cert.crt ssl_key = </usr/local/etc/dovecot/ssl/cert.key ssl_client_ca_file = </usr/local/etc/dovecot/ssl/ca.pem ssl_client_ca_dir = /usr/local/etc/dovecot/ssl Thank you in advance for any help. Kind Regards, Arkadiusz Majewski

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Permission error on stats writer
by Matt Simpson 08 Jan '19

08 Jan '19

I’m running Dovecot 2.3.4 on FreeBSD 11.2 with qmail. In my mail log, I see messages like this on every delivery Jan 8 10:30:02 v1 qmail: 1546961402.314222 delivery 533: success: lda(matt,)Error:_net_connect_unix(/var/run/dovecot/stats-writer)_failed:_Permission_denied/did_0+0+1/ Searching for this error, I found a message on a support forum for a different server that suggested adding this to dovecot.conf: service stats { unix_listener stats-reader { user = vmail group = vmail mode = 0660 } unix_listener stats-writer { user = vmail group = vmail mode = 0660 } } The person reporting the error said that this corrected it. But since I’m running qmail, I have no vmail user/group. I’m guessing that I need to replace user/group with the values that some mail delivery process is running with. I’ve tried a couple of things with no success. Any ideas? $ doveconf -n # 2.3.4 (0ecbaf23d): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.5.4 (60b0f48d) # OS: FreeBSD 11.2-RELEASE-p7 amd64 # Hostname: v1.redhorse.me auth_stats = yes auth_verbose = yes default_vsz_limit = 128 M lock_method = flock mail_location = maildir:~/Maildir 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 vnd.dovecot.pipe vnd.dovecot.execute namespace inbox { inbox = yes location = prefix = } passdb { args = imap driver = pam } plugin { recipient_delimiter = - sieve = file:~/sieve;active=~/.dovecot.sieve sieve_execute_bin_dir = /usr/local/lib/dovecot/sieve-pipe sieve_extensions = +vnd.dovecot.pipe +vnd.dovecot.execute sieve_pipe_bin_dir = /usr/local/lib/dovecot/sieve-pipe sieve_pipe_exec_timeout = 10s sieve_plugins = sieve_extprograms } postmaster_address = postmaster(a)redhorse.me protocols = imap service auth { unix_listener auth-master { group = qnofiles mode = 0660 user = alias } user = root } service imap-login { process_min_avail = 3 vsz_limit = 94 M } ssl_cert = </usr/local/etc/letsencrypt/live/bitchpack.us-0001/fullchain.pem ssl_cipher_list = EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes syslog_facility = local0 userdb { driver = passwd } verbose_proctitle = yes protocol lda { mail_plugins = " sieve" } ls -l /var/run/dovecot total 20 srw------- 1 root wheel 0 Jan 8 10:29 anvil srw------- 1 root wheel 0 Jan 8 10:29 anvil-auth-penalty srw------- 1 dovecot wheel 0 Jan 8 10:29 auth-client srw------- 1 dovecot wheel 0 Jan 8 10:29 auth-login srw-rw---- 1 alias qnofiles 0 Jan 8 10:29 auth-master -rw------- 1 root wheel 32 Jan 8 10:29 auth-token-secret.dat srw-rw-rw- 1 dovecot wheel 0 Jan 8 10:29 auth-userdb srw------- 1 dovecot wheel 0 Jan 8 10:29 auth-worker srw------- 1 root wheel 0 Jan 8 10:29 config srw-rw---- 1 root dovecot 0 Jan 8 10:29 dict srw-rw---- 1 root dovecot 0 Jan 8 10:29 dict-async srw------- 1 root wheel 0 Jan 8 10:29 director-admin srw-rw-rw- 1 root wheel 0 Jan 8 10:29 dns-client srw------- 1 root wheel 0 Jan 8 10:29 doveadm-server lrwx------ 1 root wheel 35 Jan 8 10:29 dovecot.conf -> /usr/local/etc/dovecot/dovecot.conf drwxr-xr-x 2 root wheel 512 Jan 8 10:29 empty srw-rw---- 1 root dovecot 0 Jan 8 10:29 imap-hibernate srw------- 1 root wheel 0 Jan 8 10:29 imap-master srw-rw-rw- 1 root wheel 0 Jan 8 10:29 imap-urlauth srw------- 1 dovecot wheel 0 Jan 8 10:29 imap-urlauth-worker srw-rw-rw- 1 root wheel 0 Jan 8 10:29 indexer srw------- 1 dovecot wheel 0 Jan 8 10:29 indexer-worker srw------- 1 dovecot wheel 0 Jan 8 10:29 ipc srw------- 1 root wheel 0 Jan 8 10:29 log-errors drwxr-x--- 2 root dovenull 512 Jan 8 10:29 login srw------- 1 root wheel 0 Jan 8 10:29 master -rw------- 1 root wheel 6 Jan 8 10:29 master.pid srw------- 1 root wheel 0 Jan 8 10:29 old-stats prw------- 1 root wheel 0 Jan 8 10:29 old-stats-mail prw------- 1 root wheel 0 Jan 8 10:29 old-stats-user srw------- 1 root wheel 0 Jan 8 10:29 replication-notify prw------- 1 root wheel 0 Jan 8 10:29 replication-notify-fifo srw------- 1 dovecot wheel 0 Jan 8 10:29 replicator srw------- 1 root wheel 0 Jan 8 10:29 stats-reader srw-rw---- 1 root dovecot 0 Jan 8 10:29 stats-writer drwxr-x--- 2 root dovenull 512 Jan 8 10:29 token-login

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Apple mail fails with Submission
by Ruud Voorjans 08 Jan '19

08 Jan '19

Dear all, I'm running dovecot # 2.3.2.1 - Pigeonhole version 0.5.2 () - OS: Linux 4.18.0-12-generic x86_64 Ubuntu 18.10 with Submission. It works great except with apple mail (Iphone). I get an error with the MTA (postfix): ""postfix/submission/smtpd[32552]: warning: non-SMTP command from mail.example.org[xx.xx.xx.xx]: Content-Transfer-Encoding: 7bit"" with other mail-client(s) (Outlook (Desktop and Iphone app)) i have no problem and it proxy-sends the e-mail beautiful out to the recipient. I think it is some kind of bug or maybe it just isn't supported (yet), cause as you said it is still "pretty basic". Best Regards

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Fwd: Re: gcc -> clang
by Rupert Gallagher 08 Jan '19

08 Jan '19

The compiler returns many warnings, and the test returns two IPv6-related errors. I am attaching both logs as reference. > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > On Thursday, January 3, 2019 9:53 AM, Aki Tuomi <aki.tuomi(a)open-xchange.com> wrote: > >> We compile all core code with both gcc and clang. What sort of interesting things did you find? >> >> Aki >> >>> On 03 January 2019 at 11:50 Rupert Gallagher via dovecot < dovecot(a)dovecot.org> wrote: >>> >>> Please, use clang instead of gcc. Code quality can only profit from it. I just compiled 2.3.4 and compiler stderr is full of interesting problems. >> >> --- >> Aki Tuomi

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