March 2023 - dovecot - dovecot.org

Winbind auhentication
by Luciano Mannucci 10 Mar '23

10 Mar '23

Helo all! I'm trying to set up a dovecot server so that it authenticates local user via /etc/passwd (I'm on a Freebsd 13.1) and via winbindd for those that it cannot find localy. The samba suite is alive and well, postfix gets happily mail from domain users and saves it with correct name and permissions from the windows domain. If I try to authenticate a domain user via wbinfo it works, with dovecot it doesn't. I guess I'v forgot something in the dovecot config... :) Here is my doveconf -n: # 2.3.20 (80a5ac675d): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.5.20 (149edcf2) # OS: FreeBSD 13.1-RELEASE-p5 powerpc ufs # Hostname: numeron.mcs.it auth_cache_size = 30 k auth_debug_passwords = yes auth_mechanisms = plain ntlm login auth_use_winbind = yes auth_username_format = %n auth_winbind_helper_path = /usr/local/bin/ntlm_auth default_client_limit = 1128 default_vsz_limit = 712 M disable_plaintext_auth = no first_valid_uid = 0 info_log_path = /var/log/dovecot/logfile.info listen = * lock_method = flock log_path = /var/log/dovecot/logfile login_greeting = Dovecot at Nameron Ready. mail_location = mbox:/var/spool/dovecot/%u:INBOX=/var/mail/%u mail_plugins = fts 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 passdb { driver = passwd } protocols = imap pop3 service replication-notify-fifo { name = aggregator } service anvil-auth-penalty { name = anvil } service auth-worker { name = auth-worker } service auth-client { user = root name = auth } service config { name = config } service dict-async { name = dict-async } service dict { name = dict } service login/proxy-notify { name = director } service dns-client { name = dns-client } service doveadm-server { name = doveadm } service imap-hibernate { name = imap-hibernate } service imap { service_count = 0 name = imap-login } service imap-urlauth { name = imap-urlauth-login } service imap-urlauth-worker { name = imap-urlauth-worker } service token-login/imap-urlauth { name = imap-urlauth } service imap-master { name = imap } service indexer-worker { name = indexer-worker } service indexer { name = indexer } service ipc { name = ipc } service lmtp { name = lmtp } service log-errors { name = log } service sieve { name = managesieve-login } service login/sieve { name = managesieve } service old-stats-mail { name = old-stats } service pop3 { process_limit = 255 service_count = 1 name = pop3-login } service login/pop3 { name = pop3 } service replicator-doveadm { name = replicator } service login/stats-writer { unix_listener { group = mail mode = 0666 user = dovecot path = stats-reader } unix_listener { group = mail mode = 0666 user = dovecot path = stats-writer } name = stats } service submission { name = submission-login } service login/submission { name = submission } ssl = no userdb { driver = passwd } protocol pop3 { pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_enable_last = yes pop3_uidl_format = %08Xu%08Xv service replication-notify-fifo { name = aggregator } service anvil-auth-penalty { name = anvil } service auth-worker { name = auth-worker } service auth-client { name = auth } service config { name = config } service dict-async { name = dict-async } service dict { name = dict } service login/proxy-notify { name = director } service dns-client { name = dns-client } service doveadm-server { name = doveadm } service imap-hibernate { name = imap-hibernate } service imap { name = imap-login } service imap-urlauth { name = imap-urlauth-login } service imap-urlauth-worker { name = imap-urlauth-worker } service token-login/imap-urlauth { name = imap-urlauth } service imap-master { name = imap } service indexer-worker { name = indexer-worker } service indexer { name = indexer } service ipc { name = ipc } service lmtp { name = lmtp } service log-errors { name = log } service sieve { name = managesieve-login } service login/sieve { name = managesieve } service old-stats-mail { name = old-stats } service pop3 { name = pop3-login } service login/pop3 { name = pop3 } service replicator-doveadm { name = replicator } service login/stats-writer { name = stats } service submission { name = submission-login } service login/submission { name = submission } } protocol lda { debug_log_path = /var/log/dovecot/lda-debug.log info_log_path = /var/log/dovecot/lda.info log_path = /var/log/dovecot/lda.err mail_debug = yes postmaster_address = l(a)mcs.it service replication-notify-fifo { name = aggregator } service anvil-auth-penalty { name = anvil } service auth-worker { name = auth-worker } service auth-client { name = auth } service config { name = config } service dict-async { name = dict-async } service dict { name = dict } service login/proxy-notify { name = director } service dns-client { name = dns-client } service doveadm-server { name = doveadm } service imap-hibernate { name = imap-hibernate } service imap { name = imap-login } service imap-urlauth { name = imap-urlauth-login } service imap-urlauth-worker { name = imap-urlauth-worker } service token-login/imap-urlauth { name = imap-urlauth } service imap-master { name = imap } service indexer-worker { name = indexer-worker } service indexer { name = indexer } service ipc { name = ipc } service lmtp { name = lmtp } service log-errors { name = log } service sieve { name = managesieve-login } service login/sieve { name = managesieve } service old-stats-mail { name = old-stats } service pop3 { name = pop3-login } service login/pop3 { name = pop3 } service replicator-doveadm { name = replicator } service login/stats-writer { name = stats } service submission { name = submission-login } service login/submission { name = submission } } root@numeron:~# Thanks for any hint, Luciano. -- /"\ /Via A. Salaino, 7 - 20144 Milano (Italy) \ / ASCII RIBBON CAMPAIGN / PHONE : +39 02485781 FAX: +39 0248028247 X AGAINST HTML MAIL / E-MAIL: posthamster(a)sublink.sublink.ORG / \ AND POSTINGS / WWW: http://www.lesassaie.IT/

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NFS and performances
by tomate aceite 10 Mar '23

10 Mar '23

Thanks!!!!

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how to setup timestamp
by tomate aceite 10 Mar '23

10 Mar '23

*Thanks** Alessio Cecchi*

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index locally
by tomate aceite 10 Mar '23

10 Mar '23

Thanks guys for all the help. I will check if i can do a rsync script.

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Backend doesn't support GUIDs
by Jose Celestino 09 Mar '23

09 Mar '23

Hi, Have some old dboxes where doveadm sync fails with "Backend doesn't support GUIDs, sync with header hashes instead". The error is right after reading from the folder dovecot.index.log.2. The dovecot version is 2.3.10. Any fix/workaround for the error?

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how to setup timestamp
by tomate aceite 08 Mar '23

08 Mar '23

Does anyone got any example about how to implement delay_until = timestamp ? I am not sure where i can setup it. Thanks!

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Missing mailboxes after migration from Maildir -> mdbox
by Ansgar 08 Mar '23

08 Mar '23

I migrated from existing dovecot Maildir to dbox. After adding separator to the namespace it migrated all Inbox mails, but the other mailboxes like user-created ones and "Junk", "Sent" and so on has not been migrated. Any advice would be helpful, here is my dovconf: https://pastebin.com/rDSeBcLe My migration I made using: 1. Edit dovecot.conf with new mdbox and adding separator 2. dsync mirror per user with old maildir:~/mail 3. missing mailboxes: tried with doveadm sync also with -f mode and specified mailboxes. No luck. dsync -v -u admin(a)sajdowski.de mirror maildir:~/mail mail_home = /var/vmail/mailboxes/%d/%n #mail_location = maildir:~/mail:LAYOUT=fs mail_location=mdbox:~/mdbox My directorys: root@mail:/var/vmail/mailboxes/example.de/admin# ls -l insgesamt 56 drwxrwx--- 2 vmail vmail 4096 8. Mär 01:14 cur -rw-rw---- 1 vmail vmail 160 8. Mär 01:14 dovecot.index.log -rw-rw---- 1 vmail vmail 3712 8. Mär 01:14 dovecot.list.index.log -rw-rw---- 1 vmail vmail 96 8. Mär 01:14 dovecot.mailbox.log -rw-rw---- 1 vmail vmail 51 8. Mär 01:14 dovecot-uidlist -rw-rw---- 1 vmail vmail 8 8. Mär 01:14 dovecot-uidvalidity -r--r--r-- 1 vmail vmail 0 8. Mär 00:57 dovecot-uidvalidity.6407cf6d drwxrwx--- 20 vmail vmail 4096 8. Mär 02:51 mail drwx------ 7 vmail vmail 4096 8. Mär 13:52 mailboxes drwx------ 13 vmail vmail 4096 8. Mär 02:36 Maildir drwx------ 5 vmail vmail 4096 8. Mär 04:20 mdbox drwxrwx--- 2 vmail vmail 4096 8. Mär 01:14 new -rw-rw---- 1 vmail vmail 28 8. Mär 01:14 subscriptions drwxrwx--- 2 vmail vmail 4096 8. Mär 01:14 tmp drwxrwx--- 2 vmail vmail 4096 8. Mär 00:57 xapian-indexes root@mail:/var/vmail/mailboxes/example.de/admin/mail# ls -l insgesamt 87576 drwxrwx--- 2 vmail vmail 9113600 8. Mär 02:20 cur -rw-rw---- 1 vmail vmail 1602296 8. Mär 02:20 dovecot.index -rw-rw---- 1 vmail vmail 73030876 8. Mär 02:41 dovecot.index.cache -rw-rw---- 1 vmail vmail 441656 8. Mär 02:39 dovecot.index.log -rw-rw---- 1 vmail vmail 83568 8. Mär 02:20 dovecot.index.log.2 -rwxrwx--- 1 vmail vmail 206490 17. Jun 2019 dovecot.index.thread -rwxrwx--- 1 vmail vmail 51 2. Aug 2019 dovecot-keywords -rw-rw---- 1 vmail vmail 1392 8. Mär 01:25 dovecot.list.index -rw-rw---- 1 vmail vmail 6712 8. Mär 02:41 dovecot.list.index.log -rwxrwx--- 1 vmail vmail 1464 8. Mär 02:20 dovecot.mailbox.log -rw-rw---- 1 vmail vmail 4875528 8. Mär 02:20 dovecot-uidlist -rwxrwx--- 1 vmail vmail 8 8. Mär 01:25 dovecot-uidvalidity -rwxrwx--- 1 vmail vmail 0 17. Jun 2019 dovecot-uidvalidity.5a6912f0 drwxrwx--- 5 vmail vmail 4096 7. Mär 20:14 Drafts -rw-rw---- 1 vmail vmail 49 6. Mär 11:10 maildirsize drwxrwx--- 5 vmail vmail 4096 7. Mär 20:44 'Mailling Listen' drwxrwx--- 2 vmail vmail 204800 8. Mär 00:04 new drwxrwx--- 5 vmail vmail 4096 7. Mär 20:14 Sent drwxrwx--- 5 vmail vmail 4096 7. Mär 20:44 Spam drwxrwx--- 5 vmail vmail 4096 26. Feb 19:44 'SPF Fail' -rw-rw---- 1 vmail vmail 23 8. Mär 02:20 subscriptions drwxrwx--- 2 vmail vmail 4096 8. Mär 02:20 tmp drwxrwx--- 5 vmail vmail 4096 26. Feb 19:12 Trash drwxrwx--- 5 vmail vmail 4096 7. Mär 22:30 ubb drwxrwx--- 10 vmail vmail 4096 27. Feb 18:44 xapian-indexes

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index locally
by tomate aceite 08 Mar '23

08 Mar '23

Hello, Do you know if is possible to store indexes locally instead of NFS in dovecot 2.2.7 ? Thanks.

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Dovecot "Mailbox sharing between users".
by Jobst Schmalenbach 07 Mar '23

07 Mar '23

Hi I have appended the important bits of my server configuration to the end of this email I am trying to get "Mailbox sharing between users" to work. For starters it is very hard to follow the doc only https://doc.dovecot.org/configuration_manual/shared_mailboxes/shared_mailbo… without an actual example. I tried to use this (sorry in German) https://dokuwiki.tachtler.net/doku.php?id=tachtler:dovecot_shares and this got me a little further down the track. I followed the instructions required for the dovecot config files. Restarted dovecot, not errors displayed in the logs. I have got access to two user accounts, say USER1 and USER2. I executed this lines doveadm acl set -u USER1 INBOX user=USER2 admin create delete expunge insert lookup post read write write-deleted write-seen doveadm acl set -u USER2 INBOX user=USER1 admin create delete expunge insert lookup post read write write-deleted write-seen and created (just to be sure) two folders for each user /home/USER1/Mail/shared/USER1 /home/USER1/Mail/shared/USER2 /home/USER2/Mail/shared/USER1 /home/USER2/Mail/shared/USER2 The tried to create a mailboxes like so /home/USER1/Mail/shared/USER1/testa /home/USER1/Mail/shared/USER2/testb /home/USER2/Mail/shared/USER1/testa /home/USER2/Mail/shared/USER2/testb They are not created and no error is displayed - even looking at the dovecot logs. What I see in the folders for BOTH users though (for every folder) dovecot.list.index.log On the command line I can see the .imap files and do a 'ls -alR' in the folders, but no created mbox. I can definitely see the folders, but I cannot create a mbox file. What am I doing wrong? Help please. --------------------------------------------------------------------------------------------------------------------------------------------------------------- Here are the important configuration items # 2.3.16 (7e2e900c1a): /etc/dovecot/dovecot.conf # OS: Linux 4.18.0-425.13.1.el8_7.x86_64 x86_64 AlmaLinux release 8.7 (Stone Smilodon) xfs namespace shared { list = children location = maildir:~/Mail/:INDEX=~/Mail/shared/%%u:CONTROL=~/Mail/shared/ prefix = shared/%%u/ separator = / subscriptions = yes type = shared } mail_location = mbox:/home/%u/Mail/:INBOX=/var/mail/%u mail_plugins = acl passdb { driver = pam } plugin { acl = vfile acl_shared_dict = file:/var/lib/dovecot/db/shared-mailboxes.db } service auth { unix_listener auth-userdb { group = dovecot mode = 0777 user = dovecot } } protocol imap { mail_plugins = " acl imap_acl" } --

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Flags/tags lost when moving e-mails to another folder
by Alexis Ben Miloud--Josselin 06 Mar '23

06 Mar '23

Hi, I have an issue with e-mail tags/flags. The IMAP user is using Thunderbird or Roundcube with Thunderbird tags. When the user (with an IMAP client) moves an e-mail from a folder to another, tags set on the e-mail are lost. When we check the filesystem, we can see the "a" tag: -rw-rw---- 2 test mailusers 2498 Dec 29 15:31 'cur/1676643827.M563793P15241.<HOSTNAME>,S=2498,W=2551:2,a' When we move the e-mail to another folder, the tag disappear: -rw-rw---- 2 test mailusers 2498 Dec 29 15:31 '.test/cur/1676644340.M214404P22014.<HOSTNAME>,S=2498,W=2551:2,' In both folders, the dovecot-keywords file is: 0 $LABEL1 The problem appeared after a major system upgrade (Debian 9 to 10). Dovecot version went from 2.2.27 to 2.3.4.1. Some system informations: # dovecot --version 2.3.4.1 (f79e8e7e4) # cat /etc/debian_version 10.13 # uname -a Linux <HOSTNAME> 4.19.0-23-amd64 #1 SMP Debian 4.19.269-1 (2022-12-20) x86_64 GNU/Linux # findmnt /var TARGET SOURCE FSTYPE OPTIONS /var /dev/vda3 ext4 rw,nosuid,relatime # findmnt /home TARGET SOURCE FSTYPE OPTIONS /home /dev/vdb ext4 rw,nosuid,nodev,noexec,relatime The output of `dovecot -n output` is here (link expires in one year): https://paste.evolix.org/?96d46acaea638568#56g7AQLuzJxxy4xintpexJCPgiAAG23c… Here are the operations I see on an e-mail file using strace: 15507 link("/home/test/Maildir/cur/1672326270.M619318P11927.<HOSTNAME>,S=2498,W=2551:2,Sa", "/home/test/Maildir/.test/tmp/1672326456.M737812P15507.<HOSTNAME>") = 0 15507 rename("/home/test/Maildir/.test/tmp/1672326456.M737812P15507.<HOSTNAME>", "/home/test/Maildir/.test/cur/1672326456.M737813P15507.<HOSTNAME>,S=2498,W=2551:2,S") = 0 15507 unlink("/home/test/Maildir/cur/1672326270.M619318P11927.<HOSTNAME>,S=2498,W=2551:2,Sa") = 0 Setting mbox_lazy_writes to yes and/or unsetting mail_cache_fields doesn't change anything. Any idea of what I am missing? Could this be a bug in Dovecot? Thanks in advance, -- Alexis Ben Miloud--Josselin <abenmiloud(a)evolix.fr> Evolix - Hébergement et Infogérance Open Source Marseille (37 rue Guibal, Pôle Média, 13003) / Paris / Montréal http://evolix.com | Twitter: @Evolix @EvolixNOC | http://blog.evolix.com

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