- dovecot - dovecot.org

[Dovecot] documentation for developers
by Boris Lorbeer 20 Sep '07

20 Sep '07

Hi there, I have two questions: - Is there a dovecot documentation for developers (apart from the source itself)? - In the site I am concerned with, it happens very often that one mail is delivered to hundreds of recipients. Since almost all of the mailboxes are situated on the same filesystem, the mail is delivered by just saving it once and establishing hardlinks from the mail directories of all the other recipients to this one mail. My question now is: can dovecot's lda "deliver" be configured to deliver mail to more than one recipients and to use the hardlink method just described? Boris -- Dipl. Phys. Boris Lorbeer science + computing ag Senior IT Consultant Chausseestr. 14 email B.Lorbeer(a)science-computing.de 10115 Berlin, Germany phone +49(0)30 2007697-16 www.science-computing.de fax +49(0)30 2007697-11 -- Vorstand/Board of Management: Dr. Bernd Finkbeiner, Dr. Florian Geyer, Dr. Roland Niemeier, Dr. Arno Steitz, Dr. Ingrid Zech Vorsitzender des Aufsichtsrats/ Chairman of the Supervisory Board: Prof. Dr. Hanns Ruder Sitz/Registered Office: Tuebingen Registergericht/Registration Court: Stuttgart Registernummer/Commercial Register No.: HRB 382196

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[Dovecot] 'r' flag in ACL stomping on 'l' flag effect
by Phil Edwards 19 Sep '07

19 Sep '07

We're using Dovecot 1.0.3, and I'm setting up some shared IMAP folders. The eventual goal is to do the standard "learn as spam" / "learn as ham" type of setup, with some cron jobs to do the message extractions. But there's one minor twist: the "learn as ham" folder will need to be write-only for users. (I'll either create a fake user with read access to extract the mail for sa-learn, or do some local filesystem access, etc. A problem for a future day.) The issue is that some of the mail being misclassified might contain sensitive information. So users should be able to copy messages into that folder, but not list or read other messages. (Yes, they will be removed from the folder by the future sa-learn script, don't worry.) I can get normal operation with the ACL plugin and a global ACL file: # "TestTwo" mailbox acl file: authenticated lrwik * OK Dovecot ready. 1 login ........ 1 OK Logged in. 2 list "" * * LIST (\Noselect \HasChildren) "." "Testing/" * LIST (\HasNoChildren) "." "Testing/TestTwo" * LIST (\HasNoChildren) "." "Testing/TestOne" 2 OK List completed. 3 select "Testing/TestTwo" * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 0 EXISTS * 0 RECENT * OK [UIDVALIDITY 1189458953] UIDs valid * OK [UIDNEXT 1] Predicted next UID 3 OK [READ-WRITE] Select completed. Now, I change the TestTwo acl file to read authenticated lwik but can no longer subscribe to the folder: 1 login ........ 1 OK Logged in. 2 list "" * * LIST (\Noselect \HasChildren) "." "Testing/" * LIST (\HasNoChildren) "." "Testing/TestTwo" * LIST (\HasNoChildren) "." "Testing/TestOne" 2 OK List completed. 3 subscribe "Testing/TestTwo" 3 NO Permission denied According to http://wiki.dovecot.org/ACL, the 'l' flag means "Mailbox is visible in mailbox list. Mailbox can be subscribed to." but the second part of that statement is not actually happening. Is this a misunderstanding on my part, or a bug? -- Phil Edwards

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[Dovecot] 1.1.alpha6 crashes when quota exceeded
by arvids 19 Sep '07

19 Sep '07

Hello, deliver process always crashes when user is over quota: Sep 19 19:01:48 server2 deliver(tests2): Loading modules from directory: /usr/local/dovecot/lib/dovecot/lda Sep 19 19:01:48 server2 deliver(tests2): Module loaded: /usr/local/dovecot/lib/dovecot/lda/lib10_quota_plugin.so Sep 19 19:01:48 server2 deliver(tests2): auth input: tests2 Sep 19 19:01:48 server2 deliver(tests2): auth input: home=/vmail/00/tests2 Sep 19 19:01:48 server2 deliver(tests2): auth input: uid=95 Sep 19 19:01:48 server2 deliver(tests2): auth input: gid=95 Sep 19 19:01:48 server2 deliver(tests2): auth input: quota_rule=*:storage=4000 Sep 19 19:01:48 server2 deliver(tests2): auth input: quota_rule2=*:messages=30 Sep 19 19:01:48 server2 deliver(tests2): auth input: quota_warning=storage=1900 /usr/local/bin/quota-storage-warning.sh 95 Sep 19 19:01:48 server2 deliver(tests2): auth input: quota_warning2=messages=14 /usr/local/bin/quota-messages-warning.sh 95 Sep 19 19:01:48 server2 deliver(tests2): dict quota: user = tests2, uri = proxy:/var/run/dovecot/dict-server:quotadict Sep 19 19:01:48 server2 deliver(tests2): Quota rule: root= mailbox= storage=4000kB messages=0 Sep 19 19:01:48 server2 deliver(tests2): Quota rule: root= mailbox= storage=4000kB messages=30 Sep 19 19:01:48 server2 deliver(tests2): maildir: data=/vmail/00/tests2/Maildir Sep 19 19:01:48 server2 deliver(tests2): maildir++: root=/vmail/00/tests2/Maildir, index=, control=, inbox=/vmail/00/tests2/Maildir Sep 19 19:01:49 server2 deliver(tests2): msgid=<200709191901.45174.arvids(a)arvids.net>: save failed to INBOX: Quota exceeded Sep 19 19:01:49 server2 deliver(tests2): msgid=<200709191901.45174.arvids(a)arvids.net>: Rejected: Quota exceeded Sep 19 19:01:49 server2 deliver(tests2): file index-mail-headers.c: line 590 (index_mail_get_raw_headers): assertion failed: (ret != -1) Sep 19 19:01:49 server2 deliver(tests2): Raw backtrace: /usr/local/dovecot/libexec/dovecot/deliver(i_syslog_panic_handler+0x22) [0x80b5a52] -> /usr/local/do vecot/libexec/dovecot/deliver [0x80b5917] -> /usr/local/dovecot/libexec/dovecot/deliver [0x80845d0] -> /usr/local/dovecot/libexec/dovecot/deliver(index_mail _get_first_header+0x18) [0x8084888] -> /usr/local/dovecot/libexec/dovecot/deliver(mail_get_first_header+0x17) [0x80a5a47] -> /usr/local/dovecot/libexec/dove cot/deliver(deliver_get_return_address+0x1a) [0x8058bea] -> /usr/local/dovecot/libexec/dovecot/deliver(mail_send_rejection+0x32) [0x805abd2] -> /usr/local/d ovecot/libexec/dovecot/deliver(main+0x13ba) [0x805a3ca] -> /lib/libc.so.6(__libc_start_main+0xd8) [0xb7e5bdf8] -> /usr/local/dovecot/libexec/dovecot/deliver [0x8058301] dovecot -n : # 1.1.alpha6: /usr/local/dovecot/etc/dovecot.conf base_dir: /var/run/dovecot/ syslog_facility: local0 protocols: pop3 ssl_disable: yes disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable: /usr/local/dovecot/libexec/dovecot/pop3-login login_greeting: Server. login_process_per_connection: no login_process_size: 64 verbose_proctitle: yes first_valid_uid: 95 first_valid_gid: 95 mail_uid: 95 mail_gid: 95 mail_location: maildir:~/Maildir mail_debug: yes fsync_disable: yes mail_executable: /usr/local/dovecot/libexec/dovecot/pop3 mail_plugins: quota mail_plugin_dir: /usr/local/dovecot/lib/dovecot/pop3 pop3_enable_last: yes pop3_client_workarounds: outlook-no-nuls oe-ns-eoh auth default: mechanisms: plain login digest-md5 cram-md5 apop cache_size: 2048 cache_ttl: 28800 cache_negative_ttl: 60 user: doveauth verbose: yes debug: yes debug_passwords: yes passdb: driver: sql args: /usr/local/dovecot/etc/dovecot-sql.conf userdb: driver: prefetch userdb: driver: sql args: /usr/local/dovecot/etc/dovecot-sql.conf socket: type: listen master: path: /var/run/dovecot/auth-master mode: 384 user: vmail group: vmail plugin: quota: dict:::proxy:/var/run/dovecot/dict-server:quotadict dict: quotadict: mysql:/usr/local/dovecot/etc/dovecot-sql-dict-quota.conf Regards, Arvids

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[Dovecot] Delete mails in dovecot POP3 has a bug/feature
by Nuilte Infotech 19 Sep '07

19 Sep '07

When a mailbox has abt 40 mails with 4-5 mb attachments , it is quite common for the pop3 connection to get timed out or disconnected esp. if user has dialup modem. In this case , dovecot seems to REALLY HIT the user hard. Because it simply DOES NOT delete mails , even if user requested so. It only deletes the mails if users succesfully logs out. No other pop3 server has this problem so i would request this bugs is fixed ASAP. Effect of this bug - user has to retry multiple times and download multiple copies of mail before it finally deleted. Server Using ubuntu 7.04 Feisty Fawn + standard apt-get dovecot. Client end tested using getmail+BrokenUIDLPOP3Retriever To be Fixed - dovecot should delete mail even if the client connection gets "broken" or disconnects "ungracefully". e.g. user hits CTRL+C with getmail. Package: dovecot-pop3d Priority: optional Section: mail Installed-Size: 960 Maintainer: Ubuntu Core Developers <ubuntu-devel-discuss(a)lists.ubuntu.com> Original-Maintainer: Dovecot Maintainers <jaldhar-dovecot(a)debian.org> Architecture: amd64 Source: dovecot Version: 1.0.rc17-1ubuntu2.1 Replaces: pop3-server Provides: pop3-server Depends: libc6 (>= 2.5-0ubuntu1), libssl0.9.8 (>= 0.9.8c-1), dovecot-common (>= 1.0.beta3-1) Filename: pool/main/d/dovecot/dovecot-pop3d_1.0.rc17-1ubuntu2.1_amd64.deb Size: 552280 MD5sum: cffa97e43063a8c27382b302541cf00b SHA1: bd60dad4cbec299f060f672ce46ca24423417d9f SHA256: 99327399e58de4491d2c98dd91ae23cba586f6a45103a0ab389d29331f04d20a Description: secure POP3 server that supports mbox and maildir mailboxes Dovecot is a mail server whose major goals are security and extreme reliability. It tries very hard to handle all error conditions and verify that all data is valid, making it nearly impossible to crash. It should also be pretty fast, extensible, and portable. . This package contains the dovecot POP3 server. Bugs: mailto:ubuntu-users@lists.ubuntu.com Origin: Ubuntu Package: dovecot-pop3d Priority: optional Section: mail Installed-Size: 960 Maintainer: Ubuntu Core Developers <ubuntu-devel-discuss(a)lists.ubuntu.com> Original-Maintainer: Dovecot Maintainers <jaldhar-dovecot(a)debian.org> Architecture: amd64 Source: dovecot Version: 1.0.rc17-1ubuntu2 Replaces: pop3-server Provides: pop3-server Depends: libc6 (>= 2.5-0ubuntu1), libssl0.9.8 (>= 0.9.8c-1), dovecot-common (>= 1.0.beta3-1) Filename: pool/main/d/dovecot/dovecot-pop3d_1.0.rc17-1ubuntu2_amd64.deb Size: 552070 MD5sum: 70f6954c9938250f1b213b675a51a64e SHA1: 9f8f2ccc372d901cdafec6f26c0ff8146ae4e5d5 SHA256: e5abb284858cf1bdc86157e3f19ae680e7400cc49b4292786ef0c3562fd6db7d Description: secure POP3 server that supports mbox and maildir mailboxes Dovecot is a mail server whose major goals are security and extreme reliability. It tries very hard to handle all error conditions and verify that all data is valid, making it nearly impossible to crash. It should also be pretty fast, extensible, and portable. . This package contains the dovecot POP3 server. Bugs: mailto:ubuntu-users@lists.ubuntu.com Origin: Ubuntu -- ************************************************************* Chetan Chauhan Software Architect Email: chetan(a)chauhan.org Nulite Infotech Email: support(a)nuliteinfotech.com Chennai TN,India Phone: (+91) 9840968020 *************************************************************

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[Dovecot] What's the best way to authenticate against Active Directory?
by Chris Johnson 19 Sep '07

19 Sep '07

Hi all, I'm working on a replacement for a legacy linux mail server: courier POP/IMAP, Postfix, OpenLDAP. One of the requirements of the new mail server is to authenticate against our AD infrastructure (I'll still keep a userdb in OpenLDAP). SSO is not required since most of the clients don't log into our domain. The current system has about 1,000 concurrent users on it during the day (almost all are IMAP users). Inbox size varies but is generally very high 1GB+. I'm considering dovecot as a replacement for courier IMAP on the new server mainly for performance reasons. Cyrus was also considered but I'd rather work with maildir format inboxes. I'm in the process of installing a "proof of concept" server with CentOS 5 and dovecot-1.0-1.2.rc15.el5. the production system will most likely run on RHEL Question: What's the best way (most reliable/fastest) to authenticate dovecot to AD? If someone is doing this in a production environment can you offer any hints on configuration for performance or what to expect in general? Thanks, chrisj

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[Dovecot] Add update of configure.in to alpha6
by David Favor 18 Sep '07

18 Sep '07

Put this on the list of updates. Alpha6 seems to be working great. - David -- Love feeling your best ever, all day, every day? Email join(a)RadicalHealth.com for the easy way.

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Re: [Dovecot] v1.1.alpha6 released
by Geert Hendrickx 18 Sep '07

18 Sep '07

On Mon, Sep 17, 2007 at 03:58:03PM +0300, Timo Sirainen wrote: > On Mon, Sep 17, 2007 at 02:00:54PM +0200, Geert Hendrickx wrote: > > > I guess this'll do it: http://hg.dovecot.org/dovecot/rev/92bce6a3fdad > > > > (without testing) No, the filename is wrong. The generated rquota_xdr.c > > has #include "rquota.h". > > Oh, right. :) http://hg.dovecot.org/dovecot/rev/2ab3cb6af745 Seems like dovecot nightly 20070918 fixed the problems I reported except: - I still need to run make rquota_xdr.c manually, but only the first time. If I rm rquota_xdr.c and rquota.h and run make again, the are generated. - doc/wiki now contains a lot more files with brackets in their names. (2f) But these nightly snapshots are from the 2.0 development branch, not 1.1, right? Could you please send me an 1.1 alpha snapshot (or release another alpha) to test? Thanks, Geert

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[Dovecot] Dovecot 1.0.3: mbox problems for newly created users
by Bernd Kuhls 18 Sep '07

18 Sep '07

Hi, I am having problems with Dovecot 1.0.3 and Thunderbird 2.0.0.6 when using a new user account without any mbox files present. Directory /home/$user/.imap_mail/ does not exist when Thunderbird first tries to login using IMAP to the account. On login this directory is created with a zero byte Trash file and .subscriptions containing string "Trash", so far, so good. Now I create a new message in Thunderbird and save it as draft. A zero byte file "Drafts" is created in /home/$user/.imap_mail/ but the message I wanted to save got _lost_, /home/$user/.imap_mail/Drafts stays at zero bytes. The next message I try to save as draft finds its way to the Drafts mbox however. Please note that no /home/$user/.imap_mail/inbox has been created although a inbox is shown in Thunderbird. When I move the saved message from Drafts to the inbox folder shown in Thunderbird, it gets saved in /var/mail/$user instead of /home/$user/.imap_mail/inbox, I guess this is due to the use of the mbox_snarf plugin, right? /home/$user/.imap_mail/inbox is the maildrop for Exim, which handles incoming mails, but in this scenario the user did not receive any emails yet. If I manually create /home/$user/.imap_mail/inbox, then moving a message from Drafts to the Thunderbird-displayed inbox works. How to fix this problem? Especially messages getting lost is really bad because I am in the process of changing our mail server setup from Exim/UW-Imapd to Exim/Dovecot, where I have to move 100+ /var/mail/$user mbox files to /home/$user/.imap_mail/inbox. But when Dovecot can not properly save files to previous non-existing mbox files, like Drafts, this is really a problem. Greetings, Bernd Kuhls PS: Here are the Dovecot settings: # dovecot -n # 1.0.3: /etc/dovecot/dovecot.conf log_path: /var/log/dovecot/dovecot.main log_timestamp: %Y-%m-%d %H:%M:%S protocols: imap imaps pop3 pop3s login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(pop3): /usr/lib/dovecot/pop3-login mail_extra_groups: mail mail_location: mbox:~/.imap_mail:INBOX=/var/mail/%u:INDEX=/var/mail/indexes/%u mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_plugins(default): quota imap_quota mbox_snarf mail_plugins(imap): quota imap_quota mbox_snarf mail_plugins(pop3): mbox_snarf mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 imap_client_workarounds(default): outlook-idle netscape-eoh tb-extra-mailbox-sep delay-newmail imap_client_workarounds(imap): outlook-idle netscape-eoh tb-extra-mailbox-sep delay-newmail imap_client_workarounds(pop3): outlook-idle pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv auth default: passdb: driver: pam userdb: driver: passwd plugin: quota: fs mbox_snarf: ~/.imap_mail/inbox

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[Dovecot] IP based virtual users: stripping login domain?
by Alan Ferrency 17 Sep '07

17 Sep '07

Hello. I have a likely unusual request regarding IP based virtual dovecot users. When you specify a passdb passwd-file name containing "%d", then the domain portion is stripped from the login username, before the user is checked in the passwd-file. However, if you specify a passwd-file name containing "%l" (the local IP), the domain portion of the login is not stripped off before the username is checked in the passwd-file. This behavior makes sense, and should be considered the right and proper thing to do. But in this case, I want to do something different anyway. In the setup I'm working on, most logins will use domain based virtual usernames. However, if a customer logs in with an unknown domain in their login username, I'd like to fall back to IP-based virtualization, based on the local IP they connect to. I can't use auth_username_format to strip off %d, because that would break the domain based virtualization. What I need is an option to make %l work the way %d already works; or a format inside a passwd-file which allows for partial matches in the "username" column. If I can do this directly using a passwd-file, I'd like to do that. It seems like it'd be easy if I were using an SQL back end, but that's not an option. It's possible with an external authentication script, but I want to explore more direct configuration options, first. Does anyone have any recommendations? If what I want can't already be done, and I patched dovecot to do one of these things, how likely would it be to have that patch merged into the project? Thanks, Alan Ferrency pair Networks, Inc. alan(a)pair.com

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[Dovecot] Sent / Drafts / Trash folders and subscribing ?
by Xavier Beaudouin 17 Sep '07

17 Sep '07

Hello, I am trying to migrate our configuration that use Courier-imap to dovecot, appart some users that have some issues with pop and leave messages on servers that retreive all mails into their mailboes... but this is ok for me :).. One problem that it seems that Sent / Drafts and Trash folder are not automaticaly added as subscribed folder... I really dunno about IMAP rfc or standard, I just want to know if this is considered as normal for dovecot ? Thanks, /Xavier -- Xavier Beaudouin - http://oav.net/

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