- dovecot - dovecot.org

Using Dovecot IMAPC to collect mail
by Иван Колосов 23 Feb '15

23 Feb '15

Hi list. I was looking at Dovecot's imapc feature for some time. I am aiming to use Dovecot with imapc as a kind of "store-and-forward" proxy. If I understand imapc correctly, there are two connections at work — one between the client and Dovecot and one between Dovecot and backend. When the client asks Dovecot for mail, Dovecot will retrieve mail from the backend and then send it to the client. So the question is, is it possible to configure Dovecot with imapc in such a way that it would store the mail it passes to the client? Should I use mail filter plugin to do this? I am also quite confused about authentication in this setting. Let's assume we use 'plain' authentication mechanism, then what happens? I guess that the client just sends Dovecot its credentials, and Dovecot tries to authenticate with them at the backed, responding to the client accordingly. Is this true? Thanks.

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Why doesn't index see my #ARCHIVE/ namespace?
by Larry Rosenman 22 Feb '15

22 Feb '15

thebighonker.lerctr.org /home/ler $ doveadm -D -v index \#ARCHIVE/2015/01/INBOX doveadm(ler): Debug: Loading modules from directory: /usr/local/lib/dovecot doveadm(ler): Debug: Module loaded: /usr/local/lib/dovecot/lib20_fts_plugin.so doveadm(ler): Debug: Module loaded: /usr/local/lib/dovecot/lib21_fts_lucene_plugin.so doveadm(ler): Debug: Module loaded: /usr/local/lib/dovecot/lib90_stats_plugin.so doveadm(ler): Debug: Loading modules from directory: /usr/local/lib/dovecot/doveadm doveadm(ler): Debug: Skipping module doveadm_acl_plugin, because dlopen() failed: /usr/local/lib/dovecot/doveadm/lib10_doveadm_acl_plugin.so: Undefined symbol "acl_user_module" (this is usually intentional, so just ignore this message) doveadm(ler): Debug: Skipping module doveadm_expire_plugin, because dlopen() failed: /usr/local/lib/dovecot/doveadm/lib10_doveadm_expire_plugin.so: Undefined symbol "expire_set_lookup" (this is usually intentional, so just ignore this message) doveadm(ler): Debug: Skipping module doveadm_quota_plugin, because dlopen() failed: /usr/local/lib/dovecot/doveadm/lib10_doveadm_quota_plugin.so: Undefined symbol "quota_user_module" (this is usually intentional, so just ignore this message) doveadm(ler): Debug: Module loaded: /usr/local/lib/dovecot/doveadm/lib10_doveadm_sieve_plugin.so doveadm(ler): Debug: Module loaded: /usr/local/lib/dovecot/doveadm/lib20_doveadm_fts_lucene_plugin.so doveadm(ler): Debug: Module loaded: /usr/local/lib/dovecot/doveadm/lib20_doveadm_fts_plugin.so doveadm(ler): Debug: Effective uid=1002, gid=1002, home=/home/ler doveadm(ler): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=mbox:~/mail:INBOX=~/mail/INBOX doveadm(ler): Debug: fs: root=/home/ler/mail, index=, indexpvt=, control=, inbox=/home/ler/mail/INBOX, alt= doveadm(ler): Debug: Namespace archive: type=private, prefix=#ARCHIVE/, sep=/, inbox=no, hidden=no, list=yes, subscriptions=yes location=mbox:~/MAILARCHIVE doveadm(ler): Debug: mbox: INBOX defaulted to /home/ler/MAILARCHIVE/inbox doveadm(ler): Debug: fs: root=/home/ler/MAILARCHIVE, index=, indexpvt=, control=, inbox=/home/ler/MAILARCHIVE/inbox, alt= doveadm(ler): Debug: Ignoring unknown cache field: pop3.order doveadm(ler): Debug: Ignoring unknown cache field: binary.parts doveadm(ler): Error: lucene: Failed to sync mailbox INBOX: Mailbox isn't selectable doveadm(ler): Info: #ARCHIVE/2015/01/INBOX: Caching mails seq=3..3366 doveadm(ler): Error: lucene: Failed to sync mailbox INBOX: Mailbox isn't selectable doveadm(ler): Error: lucene: Failed to sync mailbox INBOX: Mailbox isn't selectable 3364/3364 thebighonker.lerctr.org /home/ler $ thebighonker.lerctr.org /home/ler $ doveconf -n >/tmp/doveconf.out thebighonker.lerctr.org /home/ler $ cat /tmp/doveconf.out # 2.2.15: /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.4.6 (3e924b1b6c5c+) # OS: FreeBSD 10.1-STABLE amd64 auth_default_realm = lerctr.org auth_mechanisms = plain login auth_realms = lerctr.org thebighonker.lerctr.org tbh.lerctr.org auth_username_format = %Ln lda_mailbox_autocreate = yes lmtp_save_to_detail_mailbox = yes login_access_sockets = tcpwrap mail_attribute_dict = file:mail/.imap/dovecot-mail-attributes mail_debug = yes mail_location = mbox:~/mail:INBOX=~/mail/INBOX mail_plugins = fts fts_lucene stats 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 ihave duplicate vacation-seconds editheader namespace archive { hidden = no inbox = no list = yes location = mbox:~/MAILARCHIVE prefix = "#ARCHIVE/" separator = / } namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox INBOX { auto = create } mailbox Junk { special_use = \Junk } mailbox SENT { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = failure_show_msg=yes session=yes max_requests=20 driver = pam } plugin { fts = lucene fts_autoindex = yes fts_lucene = whitespace_chars=@. normalize no_snowball recipient_delimiter = + sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_extensions = +editheader +vacation-seconds stats_command_min_time = 1 mins stats_domain_min_time = 12 hours stats_ip_min_time = 12 hours stats_memory_limit = 16 M stats_refresh = 5s stats_session_min_time = 15 mins stats_track_cmds = yes stats_user_min_time = 1 hours } protocols = imap pop3 lmtp sieve service auth { unix_listener auth-client { mode = 0666 } unix_listener auth-master { mode = 0666 } } service stats { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = stats extra_groups = fifo_listener stats-mail { group = mode = 0666 user = } group = idle_kill = 4294967295 secs privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener stats { group = mode = 0666 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service tcpwrap { unix_listener login/tcpwrap { group = $default_login_user mode = 0600 user = $default_login_user } } ssl_cert = </etc/ssl/certs/CHAIN.crt ssl_key = </etc/ssl/certs/thebighonker.lerctr.org.key.open userdb { driver = passwd } verbose_proctitle = yes protocol lmtp { mail_plugins = fts fts_lucene sieve } protocol lda { mail_plugins = fts fts_lucene sieve } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep tb-lsub-flags imap_metadata = yes mail_max_userip_connections = 50 mail_plugins = fts fts_lucene stats imap_stats } thebighonker.lerctr.org /home/ler $ -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 (c) E-Mail: larryrtx(a)gmail.com US Mail: 108 Turvey Cove, Hutto, TX 78634-5688

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multiple ldap userdb and passdb
by lejeczek 20 Feb '15

20 Feb '15

hi everybody. I wonder if such a scenario is possible. if yes would I configure multiple passdb using ldap driver or within one clause set up multiple args? How would this work? many thanks P.

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Dovecot Director Issue/Bug when host=""
by Julian De Marchi 20 Feb '15

20 Feb '15

heya-- Been playing with dovecot today as I was learning about the features I haven't used yet like the director/proxy stuff. I setup a basic dovecot stack today which is 1 director and 1 IMAP dovecot server behind it. I have one user setup in MySQL and when I first changed from proxy mode to director mode I left the host column populated with the IMAP server. Once I confirmed this was working I then changed host to "" not NULL. When I then preformed my next check I got these errors(no details omitted as this is a test system): Feb 20 14:57:19 smtp-test dovecot: auth-worker(15423): Debug: sql(email3(a)example.com,10.107.0.8): query: SELECT email as user, password, host, 'Y' AS proxy_maybe, 'user' AS master, 'password' AS pass, 'any-cert' AS 'ssl' FROM virtual_users WHERE email='email3(a)example.com'; Feb 20 14:57:19 smtp-test dovecot: auth: Error: proxy(email3(a)example.com,10.107.0.8,<Zz0b430PigAKawAI>): DNS lookup for failed: Invalid input from dns-client Feb 20 14:57:19 smtp-test dovecot: auth: Error: close((null)) failed: Bad file descriptor When I changed the host data from "" to NULL all worked as expected. So the question is: is this a bug with the error output? It was kind of hard for me to diagnose at first without leaning on support in the freenode channel. This is very repeatable as it is a proper error, you can't resolve "". --julian

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Xi autobuilds restored
by Stephan Bosch 19 Feb '15

19 Feb '15

Hi, Xi had problems for more than a month now. I finally managed to access it yesterday, but it was a bit more broken than I anticipated. I had to re-install the whole system. It should now work as before. It is now Debian stable/amd64, so that is now also the master release, which is always built first. Regards, Stephan.

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Re: lazy_expunge + mdbox
by fernando.figaro＠uol.com.br 19 Feb '15

19 Feb '15

It appears to me that this issue is related to how lazy_expunge and last_instance work with mdbox - that is different from maildir. With maildir, the message is moved to the expunged namespace only when the last copy is removed (example: from trash folder). With mdbox, first time when you move message from one folder to another, dovecot creates a copy in the expunge namespace. When you delete messages or expunge them from Trash folder (example, nightly 'doveadm expunge' cronjob) they are simply deleted because they already have copies at expunged namespace. @Timo, is that correct ? This is what I could understand from my tests. Thanks, Fernando De: fernando.figaro(a)uol.com.br Enviada: Quarta-feira, 4 de Fevereiro de 2015 23:15 Para: dovecot(a)dovecot.org Assunto: lazy_expunge + mdbox Hi, I'm studying an issue related to mdbox and lazy_expunge. If it is active in the imap configuration, when you delete a message (copy to new folder + expunge old folder), a copy is also sent to the expunge namespace. I realize that is something related to mdbox and lazy_expunge_only_last_instance and found almost no references except this one (http://hg.dovecot.org/dovecot-2.2/file/24d6708cea76/TODO) lazy_expunge_only_last_instance=yes + mdbox doesn't work, because refcounts don't update immediately One other suggestion I found was to disable 'move' capability. Does anyone has other news regarding this issue ? Thanks, Fernando

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doveadm sync out of memory
by Casey Stone 18 Feb '15

18 Feb '15

Hello: I've been looking forward to getting my mail server up to Dovecot 2.2+ to be able to use the sync mechanism. I run my own mail server just for myself, with a few different accounts, and want to keep a master and backup server in sync. I'm running the Ubuntu server 14.04.1 mail stack which features Dovecot 2.2.9 (and Postfix). My setup is to use system users (userdb passwd / passdb pam) with ~/Maildir. I'll post full sanitized output of dovecot -n if it seems necessary. I have not enabled any plugins (do I need the replicator plugin active?) I have in my conf a doveadm_password defined. Anyway, after setting up an ssl listener on the main machine and after considerable struggles with SSL, I was able to run doveadm sync from the backup server successfully for a small mailbox (around 78 MB) with this command: doveadm sync -R tcps:mainserver.example.com:12345 Since I run this command as the system user on the backup server (same system users as main server) it 'just works' for the correct single user with no further options required. My plan is to run a daily cron job to sync once daily for each user. The problem is when I try to sync a larger mailbox, say 1 GB, dsync-server on the remote (master) machine throws fatal error 83 Out of Memory. I already raised vsz_limit to 512 MB. Problems probably arise with mailboxes around 200 MB though I haven't tested specifically. So my question is, is this expected and I will need to give my VM much more memory to be able to use dovecot sync, or do I have something set wrong, or is it a bug? Thanks for your help.

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how to run dovecot imap on separate server from postfix?
by Robert Fantini 18 Feb '15

18 Feb '15

Hello we are using version 2.2.13 on debian. currently imap runs on the same system as postfix , spamassassin and other mail related software. I'd like to move dovecot imapd and mail storage to its own system. I've search google and wiki and could not see how to do so. could someone please point me in the direction to that done? I like reading documentation.. here is more info on our set up: postfix: # grep dovecot /etc/postfix/* /etc/postfix/main.cf:mailbox_transport = lmtp:unix:private/dovecot-lmtp /etc/postfix/main.cf:smtpd_sasl_type = dovecot kind regards Rob Fantini

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Permissions for shared mail don't work
by Damien Desfontaines 17 Feb '15

17 Feb '15

Hello, (Sorry if you already received this mail. I sent it without having subscribed to the list, but I never got any confirmation; so I assumed it has been filtered by the anti-spam or something.) I'm using dovecot v.2.1.7 on Debian Sid, and the output of dovecot -n is available here: http://paste.fulltxt.net/C-O I'm trying to make the mailbox of (system) user "spam" available to user "ted". I followed these instructions: http://wiki2.dovecot.org/SharedMailboxes/Permissions and it doesn't seem to work. To be more precise: - I manually (and recursively) changed the permissions of all files in ~spam/Mail to 660 (and 770 for the directories); - I manually (and recursively) changed the group owner of everything in ~spam/Mail to "mailperso", where "mailperso" is a group whose users are spam and ted; - I added « mail_access_groups=mailperso » into my dovecot config; - and I restarted dovecot. But still, when I send a new email to spam, it appears as being owned by group "spam" and having permissions set to 600, so I can't access it with user "ted". I also tried to set the setgid bit for ~spam/Mail, it didn't change anything, and when I recursively set the setgid for all subdirectories of ~spam/Mail, it gives new mails the correct group (mailperso) but not the correct permissions. Have I missed something, or is this a bug? Thanks in advance and best regards, Damien

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Help with archive server
by Joy 17 Feb '15

17 Feb '15

Hi, I want to build a system where 6 months old mail to be moved to archive server to keep my mailbox clean and fast. Is there any way to achieve the same using any pre-built binary shipped with dovecot ? Thanks and Regards Joy

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