- dovecot - dovecot.org

[Dovecot] LDAP + passwd
by Paolo Basenghi 12 May '04

12 May '04

Hello, I'm in the process to choose between Courier and Dovecot. I would like to know if it's possible to configure Dovecot in order to use multiple user database (e.g. ldap+passwd) in order to have both virtual user authenticated by LDAP and system user authenticated by system password and with their own home directory. Another question: at http://dovecot.org/doc/dovecot-example.conf there is a configuration example that seems not work with Dovecot 0.99.10.4 It result in a "Fatal: Error in configuration file /etc/dovecot.conf line 391: Missing value". Line 391 is: "auth default {" Thank you for attention. Best regards. -- ___________________________________________________________________ Ing. PAOLO BASENGHI :::: Systems & Networking Engineer p.basenghi(a)netribe.it ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ NETRIBE srl :: Collaborative E-Business 42100 :: Reggio Emilia :: Italy :: Via della Costituzione, 27/4 ph. +39 0522 232378 :: fax +39 0522 232386 :: http://www.netribe.it ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

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[Dovecot] Case sensitive user names
by Jeff Graves 12 May '04

12 May '04

Hello list. This is my first post and I hope that I have something useful for people. Using Fedora Core 1 with the stock dovecot-0.99.10 RPM I noticed that user names were case sensitive which was a problem for me since I was attempting to set up winbind authentication which meant that what dovecot thought the homedir was could change depending upon the case the user typed in. Sendmail/procmail always changed the username to lowercase so I needed a way to duplicate this behavior. At any rate, I searched the archives and found Andrew's post from March: http://www.dovecot.org/list/dovecot/2004-March/003067.html - using this as a jumping point and I finally have case insensitive user names (better yet, forced lower case usernames) working for plain-text authentication (eg. dovecot.conf: auth = plain, auth_userdb = passwd, auth_passdb = passwd). It has been tested only on the source RPM from Redhat FC1 and I'm not a C programmer so I have no idea if it will work with other authentication methods or newer versions of software. I've rebuilt the RPMs (source and i386) if anyone's interested and here's the patch for those not using RPMs (it's attached as well): diff -ru dovecot-0.99.10/src/auth/mech-plain.c dovecot-0.99.10.new/src/auth/mech-plain.c --- dovecot-0.99.10/src/auth/mech-plain.c 2003-05-18 08:26:28.000000000 -0400 +++ dovecot-0.99.10.new/src/auth/mech-plain.c 2004-05-11 16:58:30.000000000 -0400 @@ -57,6 +57,7 @@ authenid); } + auth_request->user = str_lcase(auth_request->user); if (!mech_is_valid_username(auth_request->user)) { /* invalid username */ if (verbose) { Thanks, Jeff Graves, MCP Customer Support Engineer Image Source, Inc. 10 Mill Street Bellingham, MA 02019 508.966.5200 - Phone 508.966.5170 - Fax jeff(a)image-src.com - Email

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[Dovecot] nfs dotlock issues
by Maikel Verheijen 11 May '04

11 May '04

Hi List, While testing with dovecot-1.0-test8 on our platform, I get al lot of these: May 11 11:42:50 mf1 dovecot: imap(user(a)domain.tld): Our dotlock file /var/mail/mounted/d/do/domain.tld/user/Maildir/.INBOX/ dovecot.index.log.lock was modified (1084268570 vs 1084268875), assuming it wasn't overridden This is probably due to some time-issues on our platform, and the load the backend has. (our backends run in a live environment). Can the dotlock code get the timestamp of the file when the dotlock gets created in order to be able to keep the time in sync? Is there another way to prevent those seconds of time-difference? we run ntpd on both our frondends and our backends. Kind regards, Maikel Verheijen

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[Dovecot] 1.0-test7
by Timo Sirainen 11 May '04

11 May '04

http://dovecot.org/test/ Lots of bugfixes related to syncing. There's still some left. Somewhat working mbox support: - combined syncing/rewriting uses much less disk I/O than with older mbox code - expunges aren't working yet - last-uid field in X-IMAPbase header isn't updated - it's currently syncing the whole mbox constantly even if it hasn't changed - it isn't hiding the mbox-specific headers from IMAP clients - if mbox hasn't changed, rewriting could start from the message which requires rewriting instead of syncing the whole mbox - syncing could keep the lock file extra two seconds to make sure if someone changes it the file's mtime changes -> as long as only Dovecot is modifying it, we'll never need to sync the whole mbox -> multi-gigabyte mboxes are still fast! One nice thing about this mbox code is that it isn't exactly mbox-specific. Some people are still using formats which use eg. ^A as separator rather than From-line. Some people are using SMTP-formatted data directly ('.' as mail separator, '..' = normal line begins with '.'). These formats should be pretty easy to implement now as all mbox-specific code is in istream-raw-mbox.c file. I'll probably do that once mbox itself is fully working.

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[Dovecot] Mail always is delivered to /var/mail/
by Kevin Breit 07 May '04

07 May '04

Hey, I am setting up Dovecot on Debian with Postfix. I am telling Dovecot to use maildir:~/Maildir but it persists in dumping mail in mbox format in /var/mail/username. Can anyone suggest ideas? My config file is attached. Thanks Kevin

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[Dovecot] imap indexing error when moving multiple mails
by Hauke Fath 06 May '04

06 May '04

Hi, I've got an 'interesting' problem with a dovecot 0.99.10.4 setup on NetBSD/i386 1.6ZK. dovecot is serving imap only at the moment, using mbox format mailboxes. '/etc/dovecot.conf' is pretty vanilla - among the modified settings, mail_read_mmaped = yes maildir_check_content_changes = yes mbox_lock = fcntl could be relevant. Anyway - from time to time when I move a bunch of mails ( < 1) from a mailbox to another (or to the trash), the client (I've seen it with Eudora 6 on a Mac, with Mozilla 1.6 and Sylpheed on NetBSD) reports an "internal error" and the maillog shows Mar 25 14:07:33 bounce imap-login: Login: hf [130.83.xxx.yyy] Mar 25 14:07:44 bounce imap(hf): Error indexing mbox file /home/hf/Mail/Leute/Marc Wirth: LF not found where expected Mar 25 14:09:30 bounce imap(hf): Error indexing mbox file /home/hf/Mail/Leute/Marc Wirth: LF not found where expected which, if I retry the operation to another time, does not persist and is not strictly repeatable. I've set the number of allowed concurrent connections to '1' on the client, but that doesn't help. Is there anything obvious that I overlooked, or have I tripped over a genuine bug? hauke -- Hauke Fath /~\ The ASCII Ribbon Campaign Institut für Nachrichtentechnik \ / No HTML/RTF in email TU Darmstadt X No Word docs in email Ruf +49-6151-16-3281, Fax -3778 / \ Respect for open standards

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[Dovecot] Dovecot chrooting
by ?a??µp?? ?a?a???t?? 06 May '04

06 May '04

hello all i am new to dovecot and i have a small problem. I use qmail as a pop3 server and dovecot as imap. my rc script is as follows: -----snip----- #!/bin/sh exec env - PATH="/var/qmail/bin:$PATH" \ qmail-start '|preline procmail' splogger qmai -----end----- thus i deliver mails through procmail so all mails are located to /var/spool/mail. The problem exists when i tested chrooting and found it a very good idea to jail all my users.. *but* still qmail delivers mails to the real /var/spool/mail and not to the /home/chrootusers/var/spool/mail so that dovecot can pick them up. Is there any special configuration in dovecot.conf in order to chroot the /var/spool/mail to /home/chrootusers ? some of my conf: login_chroot = yes valid_chroot_dirs = /home/chrootusers mail_chroot = /var/spool/mail default_mail_env = mbox:~/mail/:INBOX=/var/mail/%u PS: tell me if you need more of the dovecot.conf PS2: sorry for my english its not my native

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[Dovecot] Re: Timezone of logentries from dovecot (Timo Sirainen)
by Lars Skovgaard 04 May '04

04 May '04

On Thu, 2004-04-29 at 15:57, Timo Sirainen wrote: > One more reason to make all logging go through dovecot-master process.. > > Temporary fix of course is setting login_chroot = no to config file. Thanks, Timo, that did the trick. Also thanks to Quentin for his reply, though I don't understand any of it. As stated, my knowledge of unix is rather limited... On Thu, 2004-04-29 at 15:48, Quentin Garnier wrote: > It's because the logging process is chrooted, doesn't have TZ env. var. > set, and doesn't have a correct /etc/localtime (or whatever your libc > uses) _inside_ the chroot directory. Therefore its timezone is the > default, UTC (formerly known as GMT). As I understand it, it would be a good idea to come up with a more permanent fix. However, I have no idea where to begin. Timo writes about making all logging go through the dovecot-master process – can anyone point me in the direction of information on how to accomplish this? Quentin writes about TZ env. var. (TimeZone?), /etc/localtime and the chroot directory. I'm sorry, Quentin, but I need a bit more info. I have the correct /etc/localtime, as far as I can tell. I've tried looking up TZ env. var. in my man-pages, but haven't come up with anything. I'll copy my /etc/localtime to the login_dir and see if this is enough. Thanks again, guys! /Lars

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[Dovecot] Envelope From changed - why?
by Tom Alsberg 04 May '04

04 May '04

Hi there. I am evaluating Dovecot as an IMAP server. I noticed on thing which irritates me. When a user saves a message to an IMAP folder with the Dovecot server, the envelope From line is changed to the address of that user, instead of keeping the From line of the original message. How can I have the original envelope From line preserved when saving messages? -- Tom -- Tom Alsberg - certified insane, complete illiterate. Homepage: http://www.cs.huji.ac.il/~alsbergt/ * An idea is not responsible for the people who believe in it.

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[Dovecot] Maildir files in cur without info
by Christoph Hohmann 04 May '04

04 May '04

Hi, I have tried to use the same Maildir dovecot uses with another program and encountered the problem that Dovecot seems to move files from new to cur in maildir-sync.c::maildir_scan_dir without adding an info part. On the page http://cr.yp.to/proto/maildir.html is written that mails have to be renamed to uniq:info when moved to the cur directory. Could this be a bug in dovecot? -- http://reboot.animeirc.de http://sylpheed-claws.sourceforge.net/

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[Dovecot] 1.0-test4
by Timo Sirainen 03 May '04

03 May '04

http://dovecot.org/test/ Maildir syncing should be pretty optimized now. And it works now with more than 40 messages in mailbox :)

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[Dovecot] Dovecot hangs after 2 or 3 days
by Jens Gutzeit 03 May '04

03 May '04

Hi all, We've some problems with our dovecot installation, its the latest stable compiled on a debian woody box. After 2 or 3 days dovecot hangs, no user can login (pop3 and imap), there's nothing in the logs. The client does allways timeout, if I restart dovecot all works well again. It's a box with s.th. around 400 users, we've enough mem free, load is not a problem, it went from 0.9 to 0.1 after migrating from cyrus-imapd, so this doesn't seem to be hardware related. My dovecot conf is online at: http://mail.sunday.de/dovecot.conf best regards/Mit freundlichen Grüßen Jens Gutzeit -- Tel.: +492151 652945 Ein PC besteht sowieso i.d.R. zu 90% aus faulen Kompromissen, zu 7% aus Elektronikschrott und zu 3% aus wirren Ideen. Benedict Mangelsdorff

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[Dovecot] 1.0-test1 released
by Timo Sirainen 03 May '04

03 May '04

http://dovecot.org/test/ I couldn't break this with Evolution with a few minutes of testing, so here's the first tarball release based on the new indexing code. Try if you're interested, but don't try it on any real mailboxes, or at least keep backups :) Also note that dovecot-uidlist file format has changed a bit, Dovecot 0.99.x isn't able to read it anymore. Things to do: - mbox code doesn't even compile, so it's disabled - custom flags aren't implemented - recent flags are broken - cache file handling isn't working now, so it's disabled - maildir syncing code isn't as well optimized as it used to be - NFS-safety to indexes (pretty easy)

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[Dovecot] 1.0-test2 released
by Timo Sirainen 03 May '04

03 May '04

http://dovecot.org/test/ I still haven't done much real world testing, but I've been thinking about all the potential race conditions a lot since last time and fixed a lot of them. There might still be some.. Changes since -test1: - Locking fixes - A lot more difficult to crash it with corrupted index files - Recent flag works, this time exactly as IMAP RFC says - Maildir syncing fixes - fcntl_lock_disable and mmap_disable settings to make it work with NFS.. almost. Not very well tested and there's a few performance issues left. - mmap_no_write setting to disable mixing write/mmap calls. Required for OpenBSD. Uses slightly more memory. If you can break the indexes, I'd like to know about that. I think they should work pretty well now.

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[Dovecot] Timezone of logentries from dovecot
by Lars Skovgaard 29 Apr '04

29 Apr '04

Hi I've been using dovecot for a long time now, and have nothing but praise for it. It's considerably faster than uw-imap, and has been very easy to configure, in spite of my limited knowledge of unix. One thing still botheres me, though, and that's the time of the entries in my logfiles. It seems that dovecot logs it's entries in GMT, while I'm using GMT+1. This is made even worse by the fact that we're now using daylight savings time, which upps the difference to two hours. Here's a couple of lines from my logs to show the difference: Apr 29 14:30:07 misterp mach_kernel: ipfw: 10000 Deny UDP 213.122.19.185:33123 129.142.126.35:137 in via en0 Apr 29 14:30:59 misterp mach_kernel: ipfw: 4000 Accept TCP 80.197.22.210:38518 129.142.126.35:995 in via en0 Apr 29 12:30:59 misterp pop3-login: Login: torben [80.197.22.210] Apr 29 14:32:25 misterp mach_kernel: ipfw: 10000 Deny UDP 195.122.208.191:1066 129.142.126.35:1434 in via en0 I don't know how to fix this, whether it's in dovecot or somewhere in a system-setting. However, all other applications log their entries with the systems current setting, so I suspect it's in dovecot. I would very much appreciate any help on the subject. Btw, I'm using MacOS X 10.2 with dovecot 0.99.10.4. Thanks! /Lars

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[Dovecot] Index abuse
by Rick Jones 28 Apr '04

28 Apr '04

How resilient is Dovecot's indexing mechanism? (seeing as it's been extensively re-vamped I guess this question may have different answers for 0.99 & 1.0). To put it in context, I'm playing with server-side automatic maintenance scripts for things like deleting messages more than x days old from folders a, b, c, etc. (using Maildir layout). So far I'm just zapping files in the cur and new directories and nothing amiss appears to happen from the IMAP client's viewpoint. I just wonder if I'm storing up trouble. Will the index files continue to hold references to non-existent files and get bloated, or do they self-clean? -- Rick Jones

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[Dovecot] Feature request: more log info/stats
by Christian Balzer 27 Apr '04

27 Apr '04

Hello, even though Timo seems to be hibernating (it's not _that_ cold in ole Suomi ;) I'd like to beg for a feature that would be very much appreciated over here. If something like this is already present and eluded my thorough archive and doc searches, feel free to smack me and then point me to the right direction. Feature request: More extensive session information and statistics in the logs. Currently all I can get from dovecot is login information, there's not even a log entry when a session was ended either by the client or a timeout. In addition a short summary would be be very helpful, qpoppers one liner stats come to mind like this: --- Apr 12 05:30:30 test in.qpopper[21266]: Stats: test 6 21868 2 108126 some.do.main IP.AD.DR.ES [pop_updt.c:296] --- Stating that user test downloaded/deleted 6 mails with 21868 bytes total and kept 2 in the inbox. This might be expanded on for IMAP operations like moves or such and raw data about transferred bytes in/out added (in my case I get that info from perdition), but the really important parts are: When did a user log into the server, when did that session end? How many new mails were read and how many mails deleted during that session? The rationale is that with this info at hand the (unfortunately) very common user whining along the lines of "the mail server ate my mails" or "I never saw this mail!" are much easier to refute. Regards and keep up the good work, Christian Balzer -- Christian Balzer Network/Systems Engineer NOC chibi(a)gol.com Global OnLine Japan/Fusion Network Services http://www.gol.com/

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[Dovecot] Setting "default_mail_env" Why is index->mailbox_path empty?
by Robert McLay 27 Apr '04

27 Apr '04

I now have default_mail_env = mbox:~/mail:INBOX=:/var/spool/mail/%u I now getting: Apr 26 15:55:32 jedrik imap(mclay): open() failed with mbox file : No such file or directory I tracked down where the error message is getting generated and added some more printing: In mbox-index.c I added: int mbox_set_syscall_error(struct mail_index *index, const char *function) { i_assert(function != NULL); i_error("index->mailbox_path: %%%s%%", index->mailbox_path); i_error("index->dir: %%%s%%", index->dir); i_error("index->filepath: %%%s%%", index->filepath); i_error("index->control_dir: %%%s%%", index->control_dir); index_set_error(index, "%s failed with mbox file %s: %m", function, index->mailbox_path); return FALSE; } This generates the following output. It seems clear that the initial reading of mbox is read correctly because index->dir and others have values derived from it but for some reason mailbox_path is empty. This is version 0.99.10.4 built with gcc 3.3.2. Here is the bottom of running ./configure: --------------------------------------------------------------------------- Install prefix ...................... : /vol/pkg/dovecot/0.99.10.4 File offsets ........................ : 64bit Building with SSL support ........... : yes (OpenSSL) Building with IPv6 support .......... : yes Building with pop3 server ........... : yes Building with user database modules . : static passwd passwd-file (modules) Building with password lookup modules : passwd passwd-file shadow pam (modules) --------------------------------------------------------------------------- Apr 26 17:06:51 jedrik imap(mclay): index->mailbox_path: %% Apr 26 17:06:51 jedrik imap(mclay): index->dir: %/home/mclay/mail/.imap/INBOX% Apr 26 17:06:51 jedrik imap(mclay): index->filepath: %/home/mclay/mail/.imap/INBOX/.imap.index% Apr 26 17:06:51 jedrik imap(mclay): index->control_dir: %/home/mclay/mail/.imap/INBOX% Apr 26 17:06:51 jedrik imap(mclay): open() failed with mbox file : No such file or directory Apr 26 17:06:51 jedrik imap(mclay): index->mailbox_path: %% Apr 26 17:06:51 jedrik imap(mclay): index->dir: %/home/mclay/mail/.imap/INBOX% Apr 26 17:06:51 jedrik imap(mclay): index->filepath: %(in-memory index for )% Apr 26 17:06:51 jedrik imap(mclay): index->control_dir: %/home/mclay/mail/.imap/INBOX% Apr 26 17:06:51 jedrik imap(mclay): stat() failed with mbox file : No such file or directory Any ideas? Thanks

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[Dovecot] Newbie Q: Setting up under linux: Spool directory.
by Robert McLay 26 Apr '04

26 Apr '04

I am trying to set up dovecot under linux. (RH9 if it matters). I'm having trouble having it find the mail that is already delivered. What I would like is that mail is delivered by fetch mail to /var/spool/mail/mclay (that me) then have dovecot find it. I'm sure that I have not set the dovecot.conf file correctly. The documentation is unclear as to what "mbox" is and "INBOX" is. I have tried having default_mail_env unset and with the following: default_mail_env = mbox:/var/spool/mail/%u:INBOX=:/home/%u/Maildir What I get when I talk to it directly is: $ telnet localhost imap Trying 127.0.0.1... Connected to localhost Escape character is '^]'. * OK dovecot ready. A00002 LOGIN mclay "xxxxxx" A00002 OK Logged in. A00003 SELECT INBOX A00003 NO Internal error [2004-04-26 12:56:03] So could a kind sole point me in the right direction? Thanks

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[Dovecot] syslog() logging problems
by James Moser 26 Apr '04

26 Apr '04

was wondering if anyone else has had problems with dovecot logging to syslog? When I start the server it works fine, then after an hour or so it stops.. restarting the server always makes it work again. -- James L Moser james(a)powweb.com PowWeb Hosting http://www.powweb.com /(bb|[^b]{2})/, that is the Question. mysql>SELECT * FROM user WHERE clue > 0; Empty set (0.03 sec) Health is merely the slowest possible rate at which one can die... Health nuts are going to feel stupid someday, lying in hospitals dying of nothing...

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[Dovecot] shared folders?
by Gareth J. Greenaway 26 Apr '04

26 Apr '04

Greetings, I saw mention in results from a google search that there was some support in dovecot CVS for shared folders, is there some docs on how to use them? Provided there is in fact support for them in CVS. Thanks. -- Gareth J. Greenaway | gareth(a)wiked.org SCLUG - Simi Conejo Linux Users Group http://www.sclug.org

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RE: [Dovecot] triggering multiple actions on pop-3 request
by Julian Melville 26 Apr '04

26 Apr '04

> The reason for this is so that the messages > retrieved by fetchmail can be filtered via an anti spam > service before depositing them into the inbox. How about just running fetchmail in daemon mode, so it's polling for messages instead of running on demand? Then you don't need to worry about any special integration issues. Julian.

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[Dovecot] RE: Missed config option
by Alex S Moore 26 Apr '04

26 Apr '04

I am trying to sync a set of maildir folders from a dovecot server and a different imap server on a different host. Using a perl tool called imapsync. The tool says the following about the two servers capabilities: >From capability : IMAP4rev1 SORT THREAD=REFERENCES MULTIAPPEND UNSELECT LITERAL+ IDLE CHILDREN LISTEXT LIST-SUBSCRIBED To capability : IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION No NAMESPACE capability in imap server sws601.mcsun.local Give the separator character with the --sep1 option The From server sws601.mcsun.local is dovecot. What did I miss that causes the NAMESPACE capability to not be seen from dovecot? What is the separator character? Thanks, Alex --

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[Dovecot] imap errors filtering folders with evolution
by Brent Hills 26 Apr '04

26 Apr '04

Hello, I posted earlier to the Ximian Evolution Users list. It was suggested I follow up in relation to dovecot. They also indicated the timestamp in the error message was coming from dovecot. When filtering a folder on a dovecot (0.99.10) imap server with Evolution version 1.46 I receive: Error while 'Filtering Folder' Imap command failed internal error [YYYY-MM-DD HH:MM:SS] The timestamp seems to be the current time. The filters used are primarily move to folder where the destination folder is another imap folder on the same server. The error can be reproduced reliably if I select a large number of email to filter. There are about 10 filters all moving to different folders based on criteria. If I select smaller number of email the error occurs but less predictably. Eventually, it will filter all the email so its not a particular one that it hangs up on. Is anyone familiar with this issue? Brent Hills.

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[Dovecot] dovecot dies - mabye a clue?
by Steven Stern 26 Apr '04

26 Apr '04

Dovecot died twice today. This was in the maillog: Apr 9 17:50:27 ciscy pop3-login: RAND_bytes() failed: error:24064064:random number generator:SSLEAY_RAND_BYTES:PRNG not seeded Apr 9 17:50:27 ciscy dovecot: Login process died too early - shutting down I think I can cause it to happen reliably and I'm asking for other to test this scenario: Open several terminal windows. In each, type "telnet 127.0.0.1 110". Wait for the dovecot POP prompt and do nothing. After each times out, up-arrow and try again. Sometime in the next hour, dovecot will die. -- Steve

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