- dovecot - dovecot.org

[Dovecot] Shared folders plans for the future
by Timo Sirainen 11 Feb '07

11 Feb '07

So while driving for several hours in my car recently and having nothing else to do, I started thinking how they could be done. I think the "public folders" configuration will stay as it is now. Does it really even need anything else? The problematic case is how the users can share their mailboxes to other users. There are two problems related to it: 1) How to get (quickly) a list of another user's mailboxes that I have access to? 2) How to get quickly a list of all users who have mailboxes that I have access to? The 1) problem is easier to solve. Create a directory listing all the mailboxes that are shared to at least someone (have ACLs set). It could be configured like: namespace shared { # IMAP namespace prefix, %u expands to shared user prefix = user/%u/ # Directory containing symlinks to user's all shared mailboxes share_dir = ~/Maildir/shared # Where to store indexes for other users' accessed mailboxes index_dir = ~/Maildir/others-indexes } The ~/Maildir/shared directory could then contain symlinks to all the shared mailboxes. The directory list could probably be in Maildir++ layout even though the symlinks would point to mboxes. This requires adding code that can handle mixed maildir/mbox directories, but it'll come anyway.. The 2) problem is more difficult. There are 3 choices: a) Use a shared database file. lib-dict could be used for this, so the database could be in SQL or in a berkeley db file. The downside to this is that the file needs to be readable and writable to everyone, so if users have shell access the users could break the file. They dictionary would contain data in format "<destination_user>/<sharing_user>" = 1 and "<destination_group>/<sharing_user>" = 1, ie. the value would be ignored and only the existence of the keys would be important. Then iterating through "<my_username>/*" and "<all_my_groups>/*" would list the users who probably have mailboxes where I have access to. b) Use a directories with sticky bit set. Well, basically the same idea as in a), except filesystem would be used. Actually perhaps this could be made another lib-dict backend.. c) Brute force: Just assume everyone potentially have shared mailboxes. Get the list of users by readdir()ing through /home (configurable). I guess each of these could be made an option.. So something like: namespace shared { .. # a) shared_dict = db:/var/lib/dovecot/shared-mailboxes.db # b) shared_dict = dir:/var/lib/dovecot/shared-mailboxes # c) shared_dict = bruteforce:/home } I'm currently also implementing a "mailbox list index", which contains a list of all the user's mailboxes and some useful metadata for them, such as number of messages and so on. So that STATUS command wouldn't need to open the mailbox index files if they haven't changed. The mailbox list index updating is normally done when directory's mtime has changed. For list of shared users that would also work in 2b) and 2c) cases, but for 2a) I'd either have to always sync everything or alternatively add some sequence/<dest_user/group>=# value which is grown for each update, and the syncing is done only when the sequence is updated.

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[Dovecot] help needed - dovecot-ldap authentication
by Vidyasagar Warge 10 Feb '07

10 Feb '07

I am trying to set a up mail server on a ubuntu edgy machine. I followed the howto at http://wanderingbarque.com/howtos/mailserver/mailserver.html . I am able to configure everything except dovecot-ldap authentication :(. After struggling with it for a week I decided to seek help. The current version of dovecot is v1.0 RC21 and the version used for the howto is v0.99.10.9. I installed & tried to configure both versions but none of them was able to authenticate a user from ldap. I noted some differences in syntax of the dovecot.conf files of both the versions. It seems that the ldap documentation at dovecot site is from the old version of dovecot ( I might be wrong on this!). So if anyone can tell me how to configure the current version of dovecot with openldap? Please help me! I am eagerly waiting for your response. Regards, Vidyasagar

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[Dovecot] where is the subfolders
by P Y Tan 10 Feb '07

10 Feb '07

I have just set up a dovecot IMAP + Maildir. Would any one tell me where Dovecot store the subfolders and how to delete invalid folders.

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[Dovecot] 1.0.rc21 released
by Timo Sirainen 10 Feb '07

10 Feb '07

http://dovecot.org/releases/dovecot-1.0.rc21.tar.gz http://dovecot.org/releases/dovecot-1.0.rc21.tar.gz.sig Just one fix. Maybe the one big thing in Dovecot v2.0.* will be a test suite, which is run before any release. :) - Cache file handling could have crashed rc20

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[Dovecot] Lda does not query pgsql
by Tognini Samuele 09 Feb '07

09 Feb '07

Hi, I don't know if it's a bug or my configuration fault, but LDA does not work as i expect. Dovecot auth connects to a pgsql database that mirrors Nis users infos, but it has also quota settings because i'd like to use a per-user quota environment. Mailserver and Postfix authenticates users with Nis (through PAM), while imap and local delivery (with the postfix mailbox_command setting) are left to dovecot mechanism. Imap works perfectly, dovecot retrieves authentication and quota setting from database, but dovecot LDA seems to not query any database (and nothing is logged) , so that quota is not retrived and message is not bounced when user is overquota. You can see it in the verbose log: deliver(tognini): 2007-02-08 12:25:02 Info: Loading modules from directory: /usr/lib/dovecot/modules/lda deliver(tognini): 2007-02-08 12:25:02 Info: Module loaded: /usr/lib/dovecot/modules/lda/lib10_quota_plugin.so deliver(tognini): 2007-02-08 12:25:02 Info: Module loaded: /usr/lib/dovecot/modules/lda/lib90_cmusieve_plugin. so deliver(tognini): 2007-02-08 12:25:02 Info: mbox: data=/home/t/tognini:INBOX=/var/spool/mail/tognini deliver(tognini): 2007-02-08 12:25:02 Info: mbox: root=/home/t/tognini, index=/home/t/tognini, inbox=/var/spool/mail/tognini deliver(tognini): 2007-02-08 12:25:02 Info: cmusieve: Using sieve path: /home/t/tognini/.dovecot.sieve deliver(tognini): 2007-02-08 12:25:02 Info: msgid=<20070208112502.7706B3273D6(a)arturo.cli.di.unipi.it>: saved mail to INBOX If i set quota variable in dovecot.conf, still no query but the global variable is used for all users: ... deliver(tognini): 2007-02-07 12:33:04 Info: dirsize quota limit = 1024kB ... My Debian server packages are: dovecot-common/unstable 1.0.rc22-1 postfix/testing 2.3.6-1 postgresql/testing 7.5.22 Dovecot.conf: protocols = imap imaps log_path = /var/log/dovecot.log log_timestamp = "%Y-%m-%d %H:%M:%S " login_greeting = Server ready. mail_location = mbox:%h:INBOX=/var/spool/mail/%u mail_extra_groups = mail mail_debug = yes mbox_read_locks = dotlock fcntl mbox_write_locks = dotlock fcntl protocol imap { mail_plugins = quota imap_quota imap_client_workarounds = outlook-idle tb-extra-mailbox-sep } auth_verbose = yes auth_debug = yes auth_debug_passwords = yes auth default { user = root mechanisms = plain passdb sql { args = /etc/dovecot/dovecot-sql.conf } userdb sql { args = /etc/dovecot/dovecot-sql.conf } userdb prefetch { } socket listen { master { path = /var/run/dovecot/auth-master mode = 0600 user = mail # User running Dovecot LDA group = mail # Or alternatively mode 0660 + LDA user in this group } } } protocol lda { postmaster_address = samuele(a)example.org mail_plugins = quota cmusieve log_path = /var/log/dovecot-deliver.log info_log_path = /var/log/dovecot-deliver.log } plugin { #quota = dirsize:storage=1024 # every user gets this quota, but it's not what i want. } Dovecot-sql.conf: driver = pgsql connect = host=192.168.1.2 dbname=dovecot user=myuser password='mypasswd' default_pass_scheme = CRYPT password_query = SELECT password, home as userdb_home, uid as userdb_uid, gid as userdb_gid, 'dirsize:storage='||quota as userdb_quota FROM user_accounts WHERE username = '%u' AND active = '1' #user_query = SELECT home, uid, gid, quota FROM user_accounts WHERE username = '%u' user_query = SELECT home, uid, gid, 'dirsize:storage=' || quota AS quota FROM user_accounts WHERE username = '%u' Postfix main.cf: ... mailbox_size_limit = 0 recipient_delimiter = + mailbox_command = /usr/lib/dovecot/deliver .... Postgresql table: Table "public.user_accounts" Column | Type | Modifiers ----------+------------------------+------------------------------ username | character varying(12) | not null uid | integer | not null gid | integer | not null password | character varying(32) | home | character varying(255) | not null active | character(1) | not null default 'Y'::bpchar quota | integer | not null default 512 Thanks in advance for any help or suggestion, Samuele

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[Dovecot] error on pop3
by jepoy 09 Feb '07

09 Feb '07

hi guys, just got this error after install quota. -ERR [IN-USE] Couldn't sync mailbox. tnx -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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[Dovecot] LSUB * error solved on rc22
by Gavin Henry 09 Feb '07

09 Feb '07

Hi All, Just a quickie to say ew are running the latest version now. Our LSUB error was due to: open(/var/mail/public/.Projects/dovecot-acl) failed: Permission denied Thanks. -- Kind Regards, Gavin Henry. Managing Director. T +44 (0) 1224 279484 M +44 (0) 7930 323266 F +44 (0) 1224 824887 E ghenry(a)suretecsystems.com Open Source. Open Solutions(tm). http://www.suretecsystems.com/

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[Dovecot] why is there email in my mbox file?
by Kendall Shaw 09 Feb '07

09 Feb '07

Hi, I've installed dovecot-imapd under ubuntu. My account and root are the only email accounts on my computer. I transitioned from using GNUS with fetchmail, exim and movemail, to gnus with exim, fetchmail and imap, so I've kept the mbox format email instead of changing to maildir. This works okay, except my mbox file is giant. I expected dovecot to take the mail out of the mbox file and put it somewhere. But, I see there's a big mbox file (/var/mail/me) that keeps growing. Is dovecot using that as the store of messages? If I were to move to using maildir instead of mbox, what is going to happen to my existing mail? Kendall

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[Dovecot] Feature Request
by Jay Chandler 09 Feb '07

09 Feb '07

How much trouble would it be to have the name of the .subscriptions file set via the configuration file, or failing that, as a compile-time option? I find that editing the source directly is a bit of a harrowing experience, particularly when doing it as part of a package management system such as an RPM or the FreeBSD ports tree. -- Jay Chandler Network Administrator, Chapman University 714.628.7249 / chandler(a)chapman.edu Today's Excuse: Too many interrupts

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[Dovecot] Folders compat. problem ?
by Frank Bonnet 08 Feb '07

08 Feb '07

Hi A user here has a strange problem when I moved my imap server from UW-IMAP to Dovecot. A folder created monthes ago with mozilla mail (windows client) became suddenly invisible when I stopped UW then started Dovecot. I really think that IMAP created folders a fully compatibles between UW and Dovecot but I'm curious to know from where does come this trouble ??? Anyone had experienced the same problem ? Thanks a lot.

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