- dovecot - dovecot.org

[Dovecot] periodic problems with dovecot-1.0rc19 (No authentication sockets found)
by Mikhail Teterin 02 Feb '07

02 Feb '07

Hi, Timo! On the new server running 1.0rc19 people stop being able to login every once in a while. The log messages on the server side are: Jan 30 12:18:50 bonkers dovecot: pop3-login: No authentication sockets found Jan 30 12:18:50 bonkers dovecot: pop3-login: No authentication sockets found Jan 30 12:18:59 bonkers dovecot: pop3-login: No authentication sockets found Jan 30 12:19:01 bonkers dovecot: imap-login: No authentication sockets found Jan 30 12:19:06 bonkers dovecot: pop3-login: No authentication sockets found Restarting dovecot helps for a while, but then the problem reappears... The config-file was copied from an older server running 1.0.r15, where we never saw this problem... The old server ran FreeBSD-4.10/i386. The new one runs FreeBSD-6.2/amd64. Thanks for any hints! Yours, -mi

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[Dovecot] Over quota message
by Antonio Casado Rodríguez 02 Feb '07

02 Feb '07

Hi all, I'm working with Dovecot-1.0.rc19 + dovecot-lda + postfix + quota-maildir plugin When a new email arrives and it's over quota, the client receives this: -------------------------------- The mail system <vvv(a)ual.es>: Command died with status 89: "/usr/local/libexec/dovecot/deliver" -------------------------------- Reporting-MTA: dns; vvv.ual.es X-Postfix-Queue-ID: 3AA3F280AB X-Postfix-Sender: rfc822; zzz(a)ual.es Arrival-Date: Fri, 26 Jan 2007 15:00:17 +0100 (CET) Final-Recipient: rfc822; vvv(a)ual.es Original-Recipient: rfc822;vvv(a)ual.es Action: failed Status: 5.3.0 Diagnostic-Code: x-unix; unknown mail system error 89 -------------------------------- cannot be received another type of clear message like: the user to exceeded the quota?

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[Dovecot] dspam plugin
by Tom Bombadil 02 Feb '07

02 Feb '07

Hi all... I was looking into the dspam plugin, and it looks very interesting. I saw two version of it around: - one that forks and call dspam - one that calls a store procedure in mysql. I was wondering if we can just log signature and classification into a flat file, instead. The problem is that calling spam can be expensive; And eventhough the myslq solution is brilliant, I dont want to rely on mysql to be alive in order to move the files to/from spam box. Plus, the plugin would be much lighter wihtout libmysqlclient. Any ideas?

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[Dovecot] Dovecot mailing list page down
by Dotan Cohen 02 Feb '07

02 Feb '07

As I've decided not to manage my own mail server, I'm trying to unsubscribe from the dovecot list. However, the page at http://www.dovecot.org/mailinglists.html is down. Does anybody have the welcome email, so that they could tell me to what address to send the unsubscribe command to? Thanks in advance. Dotan Cohen http://lyricslist.com/lyrics/artist_albums/392/paige_jennifer.html http://what-is-what.com/what_is/opera.html

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[Dovecot] Query: LSUB "" "*" still on rc19
by Gavin Henry 02 Feb '07

02 Feb '07

Hi all, We've downgraded to rc17 for the past week or so, as when we upgraded to rc19, this error did go, but came back again. ERROR: Could not complete request. Query: LSUB "" "*" Reason Given: Internal error occurred. Refer to server log for more information. Looks like it never helped us in rc19. Back on rc17 just now, which we still have to restart a few times a day, do to the LDAP stuff (which was fixed in rc18/19), but at least we can get in ;-) Which logs settings/debug do you need to get more info? 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] mailbox corruption by pop3 access
by dovecot＠quartzcrystal.org 02 Feb '07

02 Feb '07

I have about 30 pop3 users at my dovecot server, and sometime there's mailboxes (/var/spool/mail/userid) are corrupt. Troubled mailbox contains unnecessary 2 lines on head of file. Example is follow... ------------------------ .93C7E660-- >From xxxxxx(a)xxxxx.com Tue Jan 16 19:29:21:2007 ------------------------ 3rd and following lines has no plobrem. Maybe, this first line is last line of previous mail. But I don't know why it was leaved. At such cases, when user tried to get his mail by pop3 client on remote host, and close connection by server immidiate. ------------------------ -ERR Mailbox isn't a valid mbox file Connection closed by foreign host. ------------------------ Every time I delete 2 lines from his mailbox to restore on server console when it corrupt. Has anyone such problem? OS: RedHat Enterprise Linux 4 Dovecot version: 0.99.11-4.EL4 (RH official rpm)

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[Dovecot] read/unread flags broken in rc19 ?
by Stef Epardaud 01 Feb '07

01 Feb '07

Hi, I'm posting to relate that on debian unstable dovecot imap 1.0rc19 I'm experiencing exactly the same as seen on this thread: http://www.dovecot.org/list/dovecot/2007-January/018937.html All mail dating from last sunday (only that day it seems) gets reset to unread after I mark them as read after a period of time. This with thunderbird. Thanks for any help on this topic :) -- Stéphane Epardaud

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[Dovecot] Multiple Trash patch for DSPAM plugin
by Hugo Monteiro 01 Feb '07

01 Feb '07

Hello all, First of all my respects to Johannes for the nice dspam plugin he created. Unfortunatly i got stuck with a problem in that same plugin since it didn't allow the use of more than one Trash folder. That can be an issue if you have a wide variety of clients working in a wide variety of languages. Not all use the english "Trash" for that folder. I've written a small patch to accomodate that situation and it's working just fine for me. I'm submitting it in the hope that it can be usefull to others. Hope it's usefull for others too. Regards, Hugo Monteiro. -- ci.fct.unl.pt:~# cat .signature Hugo Monteiro Email : hugo.monteiro(a)fct.unl.pt Telefone : +351 212948300 Ext.15307 Centro de Informática Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa Quinta da Torre 2829-516 Caparica Portugal Telefone: +351 212948596 Fax: +351 212948548 www.ci.fct.unl.pt apoio(a)fct.unl.pt ci.fct.unl.pt:~# _

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[Dovecot] Performance, dovecot vs tpop3d
by Nate 01 Feb '07

01 Feb '07

Hello, I am new to the list and have spent extensive time researching performance suggestions through the list and the documentation. Particularly interesting is the recent performance thread related to the upcoming release. I just upgraded one of our email servers from tpop3d to dovecot 1.0rc19. tpop3d has served us well for many years; however, it basically has lost all it's support and developers. My main liking of tpop3d was it's speed. After the upgrade to dovecot, the server began to crawl. This server runs postfix for the delivery agent and now dovecot for pop3 and imap. The box serves roughly 9000 virtual maildir mailboxes with roughly 20 pop3 processes active at any given time. I ran some tests this morning to determine an exact difference between running tpop3d and dovecot. dovecot: I/O load averages 81%, System load averages 12.00 tpop3d: I/O load averages 20%, System load averages 0.50 To ensure it wasn't just a fluke of logins, I let each app run for several minutes, and did the test multiple times. The results were not any abnormal user usage and definitely related to application performance. My current settings in dovecot related to performance are: mmap_diable = yes mmap_no_write = yes Modifying these to no seems to decrease performance slightly but only a few percent. I have also played with various other settings, which didn't give me any significant performance boost. I'm eager for the next release which will have the fsync_disable option to see if that helps, it certainly looks promising. One observation where the majority of the load seems to be generated from is when a pop3 connection is loading up a very large maildir. The pop3 process seems to remain around using I/O for a considerable time, even when the user has no new email. Perhaps it is rebuilding or verifying it's index files? Here is an example of a lsof of the pop3 process with a user who has roughly 17000 messages. They check their email every 10 minutes which seems to add significant load. Note the final line, it's reading an individual message file, yet the user has no new email since the last login. If i keep lsofing the process, the final file seems to change and keep going through many of their mailbox files. The process takes many minutes to complete. Is it rebuilding the index on every login? COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME pop3 15148 postfix cwd DIR 9,2 152 850160 /home/domain.net/brock pop3 15148 postfix rtd DIR 9,2 816 2 / pop3 15148 postfix txt REG 9,2 1888690 7096106 /usr/local/libexec/dovecot/pop3 pop3 15148 postfix mem REG 9,2 107724 182934 /lib/ld-2.3.2.so pop3 15148 postfix mem REG 9,2 1578228 182936 /lib/tls/libc-2.3.2.so pop3 15148 postfix mem REG 9,2 16312 88977 /lib/libdl-2.3.2.so pop3 15148 postfix 0u IPv4 873280915 TCP domain.net:pop3->dsl.dyn.06-99.uslogin.net:40950 (CLOSE_WAIT) pop3 15148 postfix 1u IPv4 873280915 TCP domain.net:pop3->dsl.dyn.06-99.uslogin.net:40950 (CLOSE_WAIT) pop3 15148 postfix 2w FIFO 0,5 873280916 pipe pop3 15148 postfix 3r CHR 1,9 27963 /dev/urandom pop3 15148 postfix 4r FIFO 0,5 873281456 pipe pop3 15148 postfix 5w FIFO 0,5 873281456 pipe pop3 15148 postfix 6r FIFO 0,5 873281457 pipe pop3 15148 postfix 7w FIFO 0,5 873281457 pipe pop3 15148 postfix 8u REG 9,2 205740 7272682 /var/spool/mail/domain.net/brock/dovecot.index pop3 15148 postfix 9u REG 9,2 15020 7225137 /var/spool/mail/domain.net/brock/dovecot.index.log pop3 15148 postfix 10u REG 9,2 1585152 7290906 /var/spool/mail/domain.net/brock/dovecot.index.cache pop3 15148 postfix 11r REG 9,2 1992 5040734 /var/spool/mail/domain.net/brock/cur/1165164651.V902I4cea5e.s3.visp.net:2,S I'm eager to solve this new I/O issue which has cropped up after upgrading to dovecot. Despite the severe performance degradation, I feel dovecot has awesome potential and is feature rich, and most importantly it's being maintained, so I want to stick with it! Thank you for any help offered! I'm hopeful for any suggestions to solve this performance issue or diagnose it further to determine the cause. - Nate

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[Dovecot] Making POP3 not retrieve deleted messages
by Aredridel 01 Feb '07

01 Feb '07

Since my users often use the webmail system to delete messages to save their poor strained dial-up POP3-using mail clients, and our new web mail system isn't expunge-happy like the last one, I found need for this patch -- it adds a configuration option for pop3 "pop3_ignore_deleted", a boolean, that does just that. I'd love feedback. Aria

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[Dovecot] Mail Answered status flag in pine stopped working in rc19
by Carl Mason --- Director Demography Lab 01 Feb '07

01 Feb '07

The Flag indicating that a message has been Answered does not work in pine. The status flags for New and Deleted work as always. The Answered flag worked properly in dovecot 0.99, but after upgrading to 1.0rc19 it stopped working. Interestingly, mail that was answered before upgrading to rc19 still shows the proper flag. I have tried with mbox_dirty_syncs turned on and off and I have tried putting "flags" in mail_cache_fields. Obviously I am wandering in the dark. Here is the setup: pine 4.64 dovecot 1.0rc19 (installed from rpm dovecot-1.0-2_40.rc19.el4.at.i386.rpm) Centos 4.4.2 x86 mail_location = mbox:~/mail/:INBOX=%h/.mailspool/%u:INDEX=/var/dovecot_indexes\/%d/%n Inbox is NFS mounted, INDEX is on local disk Thanks.

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Re: [Dovecot] Performance, dovecot vs tpop3d
by Nate 01 Feb '07

01 Feb '07

At 09:01 PM 1/30/2007, Curtis Maloney wrote: >Nate wrote: >>Perhaps another test i'll run, just to compare apples to apples >>tomorrow would be to use a memory index with dovecot as well, and >>see if that drops the I/O load to the same as when tpop3d is running. > >Speaking of "Apples to Apples", you might want to try with >INDEX=MEMORY on Dovecot, see how that fares. > >If your users are only POP3 and download all messages at once, not >keeping mail on the server, you can (iirc) disable indexing >altogether, since it's a wasted effort. That test was on my list to try out today. I ran the test, and performance was severely degraded. Upon every new login, the entire index was rebuilt. So with any login it takes the full ~30 seconds to rebuild the index on a 17000 email user. I've confirmed also that tpop3d is doing no indexing whatsoever on disk. It isn't even compiled with that option. So it seems it is probably disk caching which is assisting tpop3d with returning a 2nd login (within a few minutes) so quickly. I wish it were the case that all users downloaded messages, but it seems all too often users click the 'leave messages on server', and never expire them. We have quite a few users (thousands probably) in that condition. We occasionally delete old stuff. Did I hear about an expire plugin upcoming? That would be useful. - Nate

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[Dovecot] Sieve and LDA
by Vincent Bernat 31 Jan '07

31 Jan '07

Hello ! I have started to use Sieve support in LDA. From the RFC a same message should not be delivered twice in the same folder : ,---- | 2.10.3. Message Uniqueness in a Mailbox | | | Implementations SHOULD NOT deliver a message to the same folder more | than once, even if a script explicitly asks for a message to be | written to a mailbox twice. | | The test for equality of two messages is implementation-defined. | | If a script asks for a message to be written to a mailbox twice, it | MUST NOT be treated as an error. `---- Dovecot seems to ignore this "SHOULD NOT" or am I missing something ? At first, I thought they were speaking of case where there is two idententic "fileinto" directive in the ruleset. Something like : fileinto "box"; fileinto "box"; But, I don't think that they would they "the test for equality of two messages" with such a trivial case. Maybe dovecot should maintain a list of recent message-id seen for each user (with the associated mailbox). -- I WILL ONLY DO THIS ONCE A YEAR I WILL ONLY DO THIS ONCE A YEAR I WILL ONLY DO THIS ONCE A YEAR -+- Bart Simpson on chalkboard in episode 3F31

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[Dovecot] IMAP on move message command launch
by Jan Srzednicki 31 Jan '07

31 Jan '07

Hello, Is it possible with dovecot IMAP server to do the following thing: After the clients moves a message from any folder to the given one, I want to launch a command and feed that message into it, as well as physically move the message to this folder. Is that possible? -- Jan Srzednicki w(a)expro.pl

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[Dovecot] Need help with "mbox sync" problem
by Jim Garrison 31 Jan '07

31 Jan '07

The following is occurring consistently on users in only one vhost domain. Other vhost domains are not having the problem. The email client in use is the same (in both the working and non-working domains). dovecot: Jan 29 21:19:18 Error: POP3(user1(a)mydomain.tld): mbox sync: UID inserted in the middle of mailbox /var/mail/vhosts/mydomain.tld/user1 (5629 > 5423, seq=2, idx_msgs=5) dovecot: Jan 29 21:19:18 Info: POP3(user1(a)mydomain.tld): Disconnected: Logged out top=0/0, retr=95/508506, del=95/95, size=506866 dovecot: Jan 29 21:19:52 Error: POP3(user2(a)mydomain.tld): mbox sync: UID inserted in the middle of mailbox /var/mail /vhosts/mydomain.tld/user2 (5634 > 5629, seq=2, idx_msgs=95) dovecot: Jan 29 21:19:52 Info: POP3(user2(a)mydomain.tld): Disconnected: Logged out top=0/0, retr=5/69654, del=5/5, si ze=69562 Once this message starts occurring, dovecot stops deleting retrieved messages when the user retrieves mail (with 'delete from server' set). The result is that the entire mailbox contents are fetched each time, resulting in copious amounts of duplicate messages. I'm on the rc8 RPM that comes with FC5, but am willing to remove it and install a later Dovecot built from source. 1) Is this a known problem that can be fixed by upgrading? 2) If not, can someone tell me what this message means exactly, and how to gather more information for debugging? The MTA is Postfix. Thanks

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[Dovecot] OT:install dovecot using yum
by jepoy 31 Jan '07

31 Jan '07

hi guys, im trying to install dovecot using yum on my centos. anyone tried this? tnx -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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Re: [Dovecot] Dovecot ACL
by Radek Zavicak 31 Jan '07

31 Jan '07

>I am using 1.0-rc19 version. I made a global ACL file in >/etc/dovecot-acls/Public as: >owner lrsi >user=manager rl > >The owner cannot delete/move mail inside his Public folder as I want. But >the user "manager" cannot subscribe/view to other's Public folder. What I >have missed? Make sure your acl file ends with LF (there is an empty line at the end) otherwise dovecot doesn't read the last line.

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[Dovecot] Fw: error after installation
by jepoy 31 Jan '07

31 Jan '07

----- Original Message ----- From: "jepoy" <jcb(a)dream.com.ph> To: <lrosa(a)hypertrek.info> Sent: Wednesday, January 31, 2007 1:43 PM Subject: Re: [Dovecot] error after installation > > ----- Original Message ----- > From: "Luigi Rosa" <lrosa(a)hypertrek.info> > To: "Dovecot Mailing List" <dovecot(a)dovecot.org> > Sent: Wednesday, January 31, 2007 1:26 PM > Subject: Re: [Dovecot] error after installation > > >> jepoy said the following on 31/1/2007 6:22: >> >>> -ERR Plaintext authentication disallowed on non-secure connections. >> >> check dovecot.conf for >> >> disable_plaintext_auth = no >> >> >> Ciao, >> luigi >> > hi luigi, > thanks for that quick response. here's my next problem.before i havent > encountered them when i use yum. > > +OK Dovecot 1.0 ready. > user jcb > +OK > pass jcb > -ERR Authentication failed. > > tnx > -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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[Dovecot] error after installation
by jepoy 31 Jan '07

31 Jan '07

hi guys, i tried installing it from source. i tried logging in with my user and password, experienced this error. +OK Dovecot 1.0 ready. user test -ERR Plaintext authentication disallowed on non-secure connections. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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[Dovecot] How to prevent SQL injection
by Jochen Schulz 31 Jan '07

31 Jan '07

Hi, on my way home today I thought a little bit about my setup which involves user and password lookups in an SQL database (Postgres). I asked myself whether I need to do anything to prevent SQL injection via forged user or domainnames. In the wiki I didn't find anything specific, only http://wiki.dovecot.org/Variables which mentions that there is the %E modifier which escapes single quites and backslashes. This appears to be a good idea but I am asking myself whether I need to do this since it is not mentioned anywhere. Is anybody able to comment on this? And BTW, it appears that one can use several modifiers at once. This is only implicitly mentioned in the wiki (You can apply modifier*s*), but it appears to work. J. -- Ultimately, the Millenium Dome is a spectacular monument of the doublethink of our times. [Agree] [Disagree] <http://www.slowlydownward.com/NODATA/data_enter2.html>

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Re: [Dovecot] Performance, dovecot vs tpop3d
by Joseph Tam 31 Jan '07

31 Jan '07

>> 2. logout, log back in immediatly, there is no re-indexing and the >> list is available in < 1 second. >> 3. logout, log back in 12 minutes later. The list is returned in >> apx 15 seconds and again in a lsof I see pop3 accessing files inside >> the cur/ directory. ... > > Of added note, when running a stat on the index files (dovecot.index, > dovecot.index.cache, dovecot.index.log), the Modify and Change > parameters remain static (no changes). So if it's rebuilding > anything it's doing it in memory and not modifying the index files. > > If I deliver a new message to the account, it does rebuild the files > for sure and increments the Modify and Change params. Perhaps what you might be seeing is file system caching. I notice this when performing NFS I/O tests: the first re-read is fast but decays over time as data is rolled out of the cache. Joseph Tam <tam(a)math.ubc.ca>

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[Dovecot] Looking for IMAP maintenance tools
by Jens Knoell 31 Jan '07

31 Jan '07

Hi I'm currently prowling for some IMAP tools to help me maintain our mailboxes. I'd prefer "pure" IMAP, i.e. no messing with file system directly, but would settle for more crude ways if need be. Specifically I am looking for: - Expunge tool: Outlook does not seem to auto-expunge messages in any way shape or form. So I'd like to run a daily cron to expunge all mailboxes. - Quota helper: Some way to send a warning email once a day or so, saying "you're close to your quota limit, please delete some mail" or somesuch Granted, I could write these two from scratch - but why reinvent the wheel? Thanks Jen

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[Dovecot] Dovecot 1.0 on a Mandriva 2007 box
by hackhound 31 Jan '07

31 Jan '07

I installed the RPM, and fought with it for days before realizing the packaged config file is incorrect. So I downloaded the latest tarball and used the sample dovecot.conf file. I was finally able to get dovecot to run as long as I leave the mail_location line commented out. If I uncomment the line dovecot complains that "mail_location" is an "unknown setting". What am I missing? Thanks, JB

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[Dovecot] help a journalist: What do you wish the CIO understood about fighting spam?
by Esther Schindler 30 Jan '07

30 Jan '07

Hi, folks. I'm senior online editor at CIO.com, and I'm working on an article for which I'd very much like your help. There's often a lack of communication between techies and top company management. Maybe they don't want to hear about problems; perhaps you give them technical details that are far more granular than they want to know. But dealing with spam is a topic that every e-mail admin has to cope with -- and I'm not sure that the CIO knows the real issues. I have the ear of the boss, however. Essentially, I'm trying to put together the collected wisdom of e-mail and network admins in a fashion that CIOs will understand. Or at least one teeny corner of it. So I have a very simple question to pose to you: ***If you could get your CIO (or top management) to understand one thing, just ONE thing, about fighting spam, what would it be?*** And the follow-up: why did you pick that one item? Feel free to share anecdotes, horror stories, even success stories. While I hope that every CIO will read this article, I also hope that it becomes the document you bring to a new manager ("Here: this is what's important to me"). I'm sure there are plenty of other things that you wish your CIO grokked, whether about e-mail administration or other topics (not the least of which is "the e-mail admin is underpaid"). But I do have to limit myself somehow, and "what's important about fighting spam" has a lot of leeway. I'll be sure to stop by here (as I expect others want to participate in the conversation), but feel free to cc me with your response or send me a private message. I'm hoping for a rather fast turnaround on this article, so please blurt out your first thoughts rather than plan on writing a nice, leisurely response. If all goes well, I'd like to get this article posted in the next couple of weeks. Please be sure to let me know how to refer to you in the article; the usual format is &name, &title, &company and &location ("Esther Schindler is a senior developer at the Groovy Corporation in Scottsdale Arizona"). If you give me some kind of context I'm willing to work without one. That is, I do need some identifying characteristics to give the article credibility ("Esther works at a large finance company in the Southwest"). Esther Schindler senior online editor, CIO.com http://blogs.cio.com/blog/37

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[Dovecot] ACL problem
by Barry Kwok 30 Jan '07

30 Jan '07

I am using 1.0-rc19 version. I made a global ACL file in /etc/dovecot-acls/Public as: owner lrsi user=manager rl The owner cannot delete/move mail inside his Public folder as I want. But the user "manager" cannot subscribe/view to other's Public folder. What I have missed? Barry

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