August 2008 - dovecot

[Dovecot] Dovecot 1.1.2, index-sync.c, line 39, assertion
by Andreas M. Kirchwitz 20 Aug '08

20 Aug '08

Hi folks, because I accidently missed a syslog entry from previous reports, here's a new one with both syslog lines. Same problem as always when saving mail from one folder to another with Pine 4.64. Does nobody else get this when copying/moving mail between folders? The assertion refers to src/lib-storage/index/index-sync.c, line 39 (function index_mailbox_set_recent_uid). Aug 19 23:01:15 linux dovecot: Panic: IMAP(user2): file index-sync.c: line 39 (index_mailbox_set_recent_uid): assertion failed: (seq_range_exists(&ibox->recent_flags, uid)) Aug 19 23:01:15 linux dovecot: IMAP(user2): Raw backtrace: imap [0x80cf8e0] -> imap [0x80cf93a] -> imap [0x80cf26c] -> imap [0x809d11a] -> imap(index_mailbox_set_recent_seq+0x3e) [0x809d15e] -> imap(mbox_sync+0x105d) [0x80823fd] -> imap [0x807a454] -> imap(index_transaction_commit+0x4e) [0x809ddfe] -> imap(cmd_copy+0x35f) [0x805b26f] -> imap [0x805fd7c] -> imap [0x805fe25] -> imap [0x80605e5] -> imap(client_input+0x5e) [0x80607fe] -> imap(io_loop_handler_run+0x100) [0x80d7230] -> imap(io_loop_run+0x28) [0x80d63c8] -> imap(main+0x4a1) [0x8068321] -> /lib/libc.so.6(__libc_start_main+0xe0) [0x149390] -> imap [0x805a101] Dovecot 1.1.2 is running on Fedora 8 Linux 32 Bit with all patches and custom OpenSSL 0.9.8h. [ output of "dovecot -n" ] # 1.1.2: /usr/local/dovecot/etc/dovecot.conf ssl_cert_file: /usr/local/dovecot/etc/dovecot.crt ssl_key_file: /usr/local/dovecot/etc/dovecot.key login_dir: /usr/local/dovecot/var/run/dovecot/login login_executable: /usr/local/dovecot/libexec/dovecot/imap-login mail_location: mbox:~/Mail:INBOX=/var/spool/mail/%u auth default: mechanisms: plain login digest-md5 cram-md5 passdb: driver: passwd-file args: /usr/local/dovecot/etc/dovecot.passwd userdb: driver: passwd-file args: /usr/local/dovecot/etc/dovecot.passwd It sometimes happens with Thunderbird 2.0.0.16 as well, but Pine 4.64 triggers this assertion very often. Greetings, Andreas

1 0

[Dovecot] dovecot performance
by Giorgenes Gelatti 20 Aug '08

20 Aug '08

Hello All, I've been studying dovecot for replacing my company's current system and I got a little worried about an aspect of the dovecot's design. I was surprised that dovecot doesn't use prefork for its mail processes, forking a new processes for each new client connection. Talking in the #dovecot channel I was gave a scenario of a system supporting ~40k users with 4 servers just fine. I wonder how well dovecot would scale if we increase this number of users by some order of magnitude like, say, 4M users. It is well known that preforking is a good pratice if you want to achieve a higher performance. When I was asked about it I readily answered: "of course it does". For my surprise later, i doesn't. Do you have any plans to support preforking in the near future? Best regards, giorgenes

5 13

[Dovecot] sendmail permissions denied
by CJ Keist 19 Aug '08

19 Aug '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Never mind On this, operator dumbness involved. Two directories above didn't allow general access into postfix home. - -------------------- With the sieve plugin trying to redirect or send vacation reply I'm getting the following error: Aug 19 13:12:52 goku deliver(joeblow): [ID 619685 mail.info] Module loaded: /use rM/mail-services/dovecot/lib/dovecot/lda/lib90_cmusieve_plugin.so Aug 19 13:12:52 goku deliver(joeblow): [ID 848615 mail.info] mbox: data=/top/students/UNGRAD/ES/joeblow/home/:INBOX=/userM/mail/joeblow Aug 19 13:12:52 goku deliver(joeblow): [ID 885103 mail.info] fs: root=/top/students/UNGRAD/ES/joeblow/home, index=, control=, inbox=/userM/mail/joeblow Aug 19 13:12:52 goku deliver(joeblow): [ID 223526 mail.info] cmusieve: Using sieve path: /top/students/UNGRAD/ES/joeblow/home/.dovecot.sieve Aug 19 13:12:52 goku deliver(joeblow): [ID 507699 mail.info] cmusieve: Executing script /top/students/UNGRAD/ES/joeblow/home/.dovecot.sievec Aug 19 13:12:52 goku deliver(joeblow): [ID 107833 mail.crit] Fatal: execv(/userM/mail-services/postfix/lib/sendmail) failed: Permission denied Aug 19 13:12:52 goku deliver(joeblow): [ID 260232 mail.error] Sendmail process terminated abnormally, exit status 75 Aug 19 13:12:52 goku deliver(joeblow): [ID 344163 mail.info] sieve runtime error: Vacation: Error sending mail Aug 19 13:12:52 goku deliver(joeblow): [ID 702911 mail.info] msgid=<48AB1B2E.4000007(a)colostate.edu>: saved mail to INBOX Aug 19 13:12:52 goku deliver(joeblow): [ID 368532 mail.error] sieve_execute_bytecode(/top/students/UNGRAD/ES/joeblow/home/.dovecot.sievec) failed Aug 19 13:12:52 goku postfix/local[10821]: [ID 197553 mail.info] EF96F2363C: to=<joeblow(a)engr.colostate.edu>, relay=local, delay=0.11, delays=0.02/0/0/0.09, dsn=2.0.0, status=sent (delivered to command: /userM/mail-services/dovecot/libexec/dovecot/deliver) Aug 19 13:12:52 goku postfix/qmgr[24972]: [ID 197553 mail.info] EF96F2363C: removed The sendmail path /userM/mail-services/postfix/lib/sendmail is correct the the permissions sendmail is: - -rwxr-xr-x 1 root root 602472 Aug 18 22:02 sendmail* I didn't have this problem with the test server. Any ideas? dovecot -n base_dir: /userM/mail-services/dovecot/var/run/dovecot/ protocols: imap imaps pop3 pop3s ssl_cert_file: /userM/mail-services/dovecot/etc/ssl/dovecot.pem ssl_key_file: /userM/mail-services/dovecot/etc/ssl/privkey.pem ssl_parameters_regenerate: 0 ssl_cipher_list: MEDIUM:!LOW disable_plaintext_auth: no login_dir: /userM/mail-services/dovecot/var/run/dovecot/login login_executable(default): /userM/mail-services/dovecot/libexec/dovecot/imap-log in login_executable(imap): /userM/mail-services/dovecot/libexec/dovecot/imap-login login_executable(pop3): /userM/mail-services/dovecot/libexec/dovecot/pop3-login login_greeting: Cyrus ready. login_max_processes_count: 1024 max_mail_processes: 1024 mail_location: mbox:~/:INBOX=/userM/mail/%u mail_debug: yes mmap_disable: yes mail_nfs_index: yes mail_executable(default): /userM/mail-services/dovecot/libexec/dovecot/imap mail_executable(imap): /userM/mail-services/dovecot/libexec/dovecot/imap mail_executable(pop3): /userM/mail-services/dovecot/libexec/dovecot/pop3 mail_plugin_dir(default): /userM/mail-services/dovecot/lib/dovecot/imap mail_plugin_dir(imap): /userM/mail-services/dovecot/lib/dovecot/imap mail_plugin_dir(pop3): /userM/mail-services/dovecot/lib/dovecot/pop3 auth default: mechanisms: plain login verbose: yes debug: yes passdb: driver: pam passdb: driver: passwd args: blocking=yes userdb: driver: passwd args: blocking=yes socket: type: listen client: path: /var/lib/postfix/private/auth mode: 432 user: postfix group: postfix - -- C. J. Keist Email: cj.keist(a)colostate.edu UNIX/Network Manager Phone: 970-491-0630 Engineering Network Services Fax: 970-491-5569 College of Engineering, CSU Ft. Collins, CO 80523-1301 All I want is a chance to prove 'Money can't buy happiness' -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFIqyjlA29OFr7C6jcRAv6GAJ90UCY/clZa43NBCysv0ktlg11cVQCeOnkq ylkleO56B91KU/4CuAGBACc= =s9YN -----END PGP SIGNATURE-----

1 0

[Dovecot] sendmail permissions denied
by CJ Keist 19 Aug '08

19 Aug '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 With the sieve plugin trying to redirect or send vacation reply I'm getting the following error: Aug 19 13:12:52 goku deliver(joeblow): [ID 619685 mail.info] Module loaded: /use rM/mail-services/dovecot/lib/dovecot/lda/lib90_cmusieve_plugin.so Aug 19 13:12:52 goku deliver(joeblow): [ID 848615 mail.info] mbox: data=/top/students/UNGRAD/ES/joeblow/home/:INBOX=/userM/mail/joeblow Aug 19 13:12:52 goku deliver(joeblow): [ID 885103 mail.info] fs: root=/top/students/UNGRAD/ES/joeblow/home, index=, control=, inbox=/userM/mail/joeblow Aug 19 13:12:52 goku deliver(joeblow): [ID 223526 mail.info] cmusieve: Using sieve path: /top/students/UNGRAD/ES/joeblow/home/.dovecot.sieve Aug 19 13:12:52 goku deliver(joeblow): [ID 507699 mail.info] cmusieve: Executing script /top/students/UNGRAD/ES/joeblow/home/.dovecot.sievec Aug 19 13:12:52 goku deliver(joeblow): [ID 107833 mail.crit] Fatal: execv(/userM/mail-services/postfix/lib/sendmail) failed: Permission denied Aug 19 13:12:52 goku deliver(joeblow): [ID 260232 mail.error] Sendmail process terminated abnormally, exit status 75 Aug 19 13:12:52 goku deliver(joeblow): [ID 344163 mail.info] sieve runtime error: Vacation: Error sending mail Aug 19 13:12:52 goku deliver(joeblow): [ID 702911 mail.info] msgid=<48AB1B2E.4000007(a)colostate.edu>: saved mail to INBOX Aug 19 13:12:52 goku deliver(joeblow): [ID 368532 mail.error] sieve_execute_bytecode(/top/students/UNGRAD/ES/joeblow/home/.dovecot.sievec) failed Aug 19 13:12:52 goku postfix/local[10821]: [ID 197553 mail.info] EF96F2363C: to=<joeblow(a)engr.colostate.edu>, relay=local, delay=0.11, delays=0.02/0/0/0.09, dsn=2.0.0, status=sent (delivered to command: /userM/mail-services/dovecot/libexec/dovecot/deliver) Aug 19 13:12:52 goku postfix/qmgr[24972]: [ID 197553 mail.info] EF96F2363C: removed The sendmail path /userM/mail-services/postfix/lib/sendmail is correct the the permissions sendmail is: - -rwxr-xr-x 1 root root 602472 Aug 18 22:02 sendmail* I didn't have this problem with the test server. Any ideas? dovecot -n base_dir: /userM/mail-services/dovecot/var/run/dovecot/ protocols: imap imaps pop3 pop3s ssl_cert_file: /userM/mail-services/dovecot/etc/ssl/dovecot.pem ssl_key_file: /userM/mail-services/dovecot/etc/ssl/privkey.pem ssl_parameters_regenerate: 0 ssl_cipher_list: MEDIUM:!LOW disable_plaintext_auth: no login_dir: /userM/mail-services/dovecot/var/run/dovecot/login login_executable(default): /userM/mail-services/dovecot/libexec/dovecot/imap-log in login_executable(imap): /userM/mail-services/dovecot/libexec/dovecot/imap-login login_executable(pop3): /userM/mail-services/dovecot/libexec/dovecot/pop3-login login_greeting: Cyrus ready. login_max_processes_count: 1024 max_mail_processes: 1024 mail_location: mbox:~/:INBOX=/userM/mail/%u mail_debug: yes mmap_disable: yes mail_nfs_index: yes mail_executable(default): /userM/mail-services/dovecot/libexec/dovecot/imap mail_executable(imap): /userM/mail-services/dovecot/libexec/dovecot/imap mail_executable(pop3): /userM/mail-services/dovecot/libexec/dovecot/pop3 mail_plugin_dir(default): /userM/mail-services/dovecot/lib/dovecot/imap mail_plugin_dir(imap): /userM/mail-services/dovecot/lib/dovecot/imap mail_plugin_dir(pop3): /userM/mail-services/dovecot/lib/dovecot/pop3 auth default: mechanisms: plain login verbose: yes debug: yes passdb: driver: pam passdb: driver: passwd args: blocking=yes userdb: driver: passwd args: blocking=yes socket: type: listen client: path: /var/lib/postfix/private/auth mode: 432 user: postfix group: postfix - -- C. J. Keist Email: cj.keist(a)colostate.edu UNIX/Network Manager Phone: 970-491-0630 Engineering Network Services Fax: 970-491-5569 College of Engineering, CSU Ft. Collins, CO 80523-1301 All I want is a chance to prove 'Money can't buy happiness' -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFIqx3LA29OFr7C6jcRAr2FAJ4lHPlswLAhQpwTLm788CkogrfB0QCfXHvs /2Ej000B55JKNjdRrk4/KIM= =wtuS -----END PGP SIGNATURE-----

1 0

[Dovecot] dovecot: Fatal: Time just moved backwards by 3603 seconds.
by Stephen Feyrer 19 Aug '08

19 Aug '08

<nervous_darting_eyes> Hi Everyone. </nervous_darting_eyes> Ooops I just broke my dovecot install. I've looked through the mailing list archives and not found anything relevant. When I try to connect to my mail server I get this message. "Could not connect to mail server chen.home.org; connection was refused" The last message in /var/log/mail.err is:- Aug 13 21:02:27 chen dovecot: Fatal: Time just moved backwards by 3603 seconds. This might cause a lot of problems, so I'll just kill myself now. http://wiki.dovecot.org/TimeMovedBackwards It seems this is my own fault. Time on my system is a little wonky so I reset the time and then I found out I'd broken Dovecot. I didn't realise that doing this would have an impact on dovecot. I read the web page and to be honest I'm not confident about hacking source code. I've reinstalled dovecot which worked except it hasn't solved my time travel problem. By the way since my first install of dovecot the config file seems to have changed a little but since I've tried to migrate my settings over the new file and been met with the same problem I don't think it's that. Is it possible to get dovecot working again? -- Regards Stephen.

6 11

[Dovecot] Anyone using LG Voyager (vx10000) with dovecot IMAP?
by Adam McDougall 19 Aug '08

19 Aug '08

Anyone using the mobile IMAP option on the LG Voyager (mobile phone) with dovecot? I think it costs $5 extra per month. Seems low enough just to try it and find out. Thanks

1 0

[Dovecot] SpamAssassin and Maildir with Dovecot
by Kenneth Porter 19 Aug '08

19 Aug '08

A patch has been proposed for SpamAssassin to process Maildir folders of spam: <https://issues.apache.org/SpamAssassin/show_bug.cgi?id=3003> Is this patch compatible with Dovecot's implementation of Maildir? For example, is anything needed to avoid stepping on Dovecot's metadata?

3 4

[Dovecot] POP3 dictionary attacks
by Kenneth Porter 18 Aug '08

18 Aug '08

I'm seeing strings of failed POP3 login attempts with obvious bogus usernames coming from different IP addresses. Today's originated from 216.31.146.19 (which resolves to neovisionlabs.com) This looks like a botnet attack. I got a similar probe a couple days ago. Is anyone else seeing these? The attack involves trying about 20 different names, about 3-4 seconds apart. Here's a few sample log lines: dovecot: Aug 15 04:15:45 Error: auth-worker(default): pam(mike,216.31.146.19): pam_authenticate() failed: User not known to the underlying authentication module dovecot: Aug 15 04:15:49 Error: auth-worker(default): pam(alan,216.31.146.19): pam_authenticate() failed: User not known to the underlying authentication module dovecot: Aug 15 04:15:53 Error: auth-worker(default): pam(info,216.31.146.19): pam_authenticate() failed: User not known to the underlying authentication module dovecot: Aug 15 04:15:57 Error: auth-worker(default): pam(shop,216.31.146.19): pam_authenticate() failed: User not known to the underlying authentication module Timo, can you add the port used in the attempt to the error log entry? (It does show up in the info log entry, but that means I need to correlate lines in the two log files.)

9 10

[Dovecot] IMAP maildir performance difference between dovecot-uidlist versions?
by Jack Stewart 17 Aug '08

17 Aug '08

Hi, Is there an IMAP performance difference using Maildir between using version 3 and version 1 of the dovecot-uidlist (either dovecot 1.0.7 or 1.1.2)? It isn't entirely clear to me there is any difference as the filename may contain the size/vsize information. The servers will eventually be running 1.1.2 with the maildir_copy_preserve_filename turned on. I'm doing a batch migration from courier to dovecot 1.0.7 and eventually dovecot 1.1.2. These servers are, and will continue to be, IMAP only (i.e. dedicated control/dovecot-uidlist files). The migration script is run once - no build on the fly. It does a readdir() to get the full filenames and make sure that list entries are only for existing files. As a result, there is almost complete freedom in the output format for the dovecot-uidlist. Many thanks in advance! ---Jack P.S. For better or worse, it does seem that once you are stuck with whatever initial version you choose. -- Jack Stewart IMSS, California Institute of Technology, M/C 1-10, 1200 E. California Blvd, Pasadena, CA 91125 jstewart(a)caltech.edu / 626-309-4690 http://www.imss.caltech.edu

2 1

Re: [Dovecot] POP3 dictionary attacks
by Bruce Bodger 16 Aug '08

16 Aug '08

On Aug 16, 2008, at 11:14 AM, Mark Sapiro wrote: >>> Exactly. These days, IP spoofing is most useful to hide the >>> identity of >>> the perpetrator of a DoS attack. It certainly is not applicable to a >>> dictionary attack on POP3 or other logins since with a spoofed >>> IP, the >>> perpetrator will never see the response to determine if the login >>> attempt was successful. >> >> I stand corrected... sorry. I was thinking of an http cross-site >> attack which also seems popular now-a-days. >> >> So if I read you right then you would consider the IP address shown >> in the original thread post.. >> >>> dovecot: Aug 15 04:15:45 Error: auth-worker(default): pam(mike, >>> 216.31.146.19): pam_authenticate() failed: User not known to the >>> underlying authentication module >>> dovecot: Aug 15 04:15:49 Error: auth-worker(default): pam(alan, >>> 216.31.146.19): pam_authenticate() failed: User not known to the >>> underlying authentication module >>> dovecot: Aug 15 04:15:53 Error: auth-worker(default): pam(info, >>> 216.31.146.19): pam_authenticate() failed: User not known to the >>> underlying authentication module >>> dovecot: Aug 15 04:15:57 Error: auth-worker(default): pam(shop, >>> 216.31.146.19): pam_authenticate() failed: User not known to the >>> underlying authentication module >> >> >> ..216.31.146.19, to be a party to the attack and therefore a >> candidate for locking out? > > > Yes. I do it (with my own script, not fail2ban, but it works the same > way). Thank you for the clarification. B. Bodger

1 0

[Dovecot] PAM session closes too soon
by Lauri Alanko 16 Aug '08

16 Aug '08

Hi. I'm trying to keep most of my data encrypted when possible, only keeping the decryption key in memory (and thus vulnerable to local attacks) when I'm actually using my data. In practice, this means using pam_mount to mount my home directory from an encrypted device. It almost looked like I could get this to work with mail as well, even when read via IMAP from a remote client: I placed my mail in the encrypted home directory, added pam_mount to /etc/pam.d/dovecot, and set session=yes in Dovecot's PAM configuration. Except that it didn't, quite: pam_mount worked just fine and mounted the encrypted disk using the IMAP password... and then immediately unmounted it, since for some reason session=yes means that Dovecot closes the session _immediately_ after opening it. This seems just silly. If a PAM session is to be used, then it seems obvious to me that its length should be exactly the length of the IMAP session. I can't see any reason for the current behavior, except maybe that it was a bit simpler to code and is sufficient for pam_mkhomedir (and only that). Can this be fixed with reasonable effort? Also, for pam_mount to work correctly, there must not be any file descriptors open in the mounted file system when the session closes, as otherwise unmounting is impossible. Will dovecot release all fds into the mail and index files when the session ends, or can it be made to do so? (UTSL is an acceptable answer.) Thanks in advance. Lauri Alanko la(a)iki.fi

2 1

[Dovecot] Error 89
by Hodges 16 Aug '08

16 Aug '08

Just installed dovecot 1.1.2. downloaded from dovecot.org. Seemed to compile and install OK but I get the following error when I try to start it "child 28410 (auth) returned error 89 (fatal failure)" I just want to use it for SMTP/SASL authorization, not Pop3 or IMAP, as yet It looks as though I haven't installed some component or other but what? Config file follows; # 1.1.2: /usr/local/etc/dovecot.conf protocols: none login_dir: /usr/local/var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/imap-login auth default: mechanisms: plain login passdb: driver: pam userdb: driver: passwd socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix Steve

2 2

[Dovecot] Problem with squirrelmail and dovecot 1.1
by Gerhard Wiesinger 16 Aug '08

16 Aug '08

Hello! I'm running squirrelmail 1.4.8 (I know this is not the latest version) and know I'm having troubles with: 1.) Folder list view 2.) Save to sent or Drafts folder. Configuration worked well. I think it has to do with the upgrade from dovecot 1.0 to 1.1 and the LIST command. Thunderbird/alpine work well. Commands from rawlog are: A002 LIST "" "~/Mail/Drafts" A002 OK List completed. or A002 LIST "" "~/Mail/sent" A003 CREATE "~/Mail/sent" A002 OK List completed. A003 NO Mailbox exists. Has something changed in the folder behaviour of dovecot from 1.0 to 1.1? If you need more information please let me know it. Any ideas? Thnx. Ciao, Gerhard -- http://www.wiesinger.com/

1 0

Re: [Dovecot] SpamAssassin and Maildir with Dovecot
by Gabriel Millerd 15 Aug '08

15 Aug '08

On Fri, Aug 15, 2008 at 11:57 AM, Kenneth Porter <shiva(a)sewingwitch.com> wrote: > A patch has been proposed for SpamAssassin to process Maildir folders of > spam: > Nothing on the disk looks modified by the code change, sa-learn is just reading from the disk fand altering the sa-storage as instructed by the learn rule switch. If you learned and then nuked some headers for example, the file size would change and that would be an issue if you storage that in the filename (they wouldn't match) as well as the dovecot index for imap/pop would be off potentially. Possibly some active imap sessions might be confused as well. This patch only really is sensitive to the Maildir structure, it has been able to handle the mail directories. -- Gabriel Millerd

1 0

[Dovecot] Search for (any of) multiple terms slow
by Patrick Nagel 15 Aug '08

15 Aug '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, this may be an obvious logical problem I'm not aware of, which cannot be solved any more efficiently... but maybe it's just a bug or there is potential for optimisation in Dovecot (or Thunderbird?). When searching for multiple terms at once ("any of") with Thunderbird/Dovecot (using FTS Squat indexes), it takes much longer (not double the time, or a bit more than that, but really much, much longer) than when I search for only one term. Here are some figures (the IMAP commands are shown as issued by Thunderbird and recorded by Dovecot rawlog). While searching, I can see the 'imap' process using 100% CPU time. Searching for "xyz" in Archive and subfolders 4 secs 32 select "Archive" 33 uid SEARCH UNDELETED BODY "xyz" 34 select "Archive.2004" 35 UID fetch 1:* (FLAGS) 36 uid SEARCH UNDELETED BODY "xyz" 37 select "Archive.2004.2005" 38 UID fetch 1:* (FLAGS) 39 uid SEARCH UNDELETED BODY "xyz" 40 select "Archive.2004.2005.2006" 41 UID fetch 1:* (FLAGS) 42 uid SEARCH UNDELETED BODY "xyz" 43 select "Archive.2004.2005.2006.2007" 44 UID fetch 1:* (FLAGS) 45 uid SEARCH UNDELETED BODY "xyz" 46 select "Archive.2004.2005.2006.2007.2008" 47 UID fetch 1:* (FLAGS) 48 uid SEARCH UNDELETED BODY "xyz" 49 IDLE Searching for "xyz" and "abc" (any of) in Archive and subfolders 123 secs 50 select "Archive" 51 uid SEARCH UNDELETED (OR BODY "xyz" BODY "abc") 52 select "Archive.2004" 53 UID fetch 1:* (FLAGS) 54 uid SEARCH UNDELETED (OR BODY "xyz" BODY "abc") 55 select "Archive.2004.2005" 56 UID fetch 1:* (FLAGS) 57 uid SEARCH UNDELETED (OR BODY "xyz" BODY "abc") 58 select "Archive.2004.2005.2006" 59 UID fetch 1:* (FLAGS) 60 uid SEARCH UNDELETED (OR BODY "xyz" BODY "abc") 61 select "Archive.2004.2005.2006.2007" 62 UID fetch 1:* (FLAGS) 63 uid SEARCH UNDELETED (OR BODY "xyz" BODY "abc") 64 select "Archive.2004.2005.2006.2007.2008" 65 UID fetch 1:* (FLAGS) 66 uid SEARCH UNDELETED (OR BODY "xyz" BODY "abc") 67 IDLE Searching for "xyz", "abc" and "def" in Archive and subfolders 173 secs 68 select "Archive" 69 uid SEARCH UNDELETED (OR (OR BODY "xyz" BODY "abc") BODY "def") 70 select "Archive.2004" 71 UID fetch 1:* (FLAGS) 72 uid SEARCH UNDELETED (OR (OR BODY "xyz" BODY "abc") BODY "def") 73 select "Archive.2004.2005" 74 UID fetch 1:* (FLAGS) 75 uid SEARCH UNDELETED (OR (OR BODY "xyz" BODY "abc") BODY "def") 76 select "Archive.2004.2005.2006" 77 UID fetch 1:* (FLAGS) 78 uid SEARCH UNDELETED (OR (OR BODY "xyz" BODY "abc") BODY "def") 79 select "INBOX" 80 UID fetch 1:* (FLAGS) 81 check 82 select "Archive.2004.2005.2006.2007" 83 UID fetch 1:* (FLAGS) 84 uid SEARCH UNDELETED (OR (OR BODY "xyz" BODY "abc") BODY "def") 85 select "Archive.2004.2005.2006.2007.2008" 86 UID fetch 1:* (FLAGS) 87 uid SEARCH UNDELETED (OR (OR BODY "xyz" BODY "abc") BODY "def") 88 IDLE Searching for "xyz", "abc", "def" and "ghi" in Archive and subfolders 217 secs 89 select "Archive" 90 uid SEARCH UNDELETED (OR (OR (OR BODY "xyz" BODY "abc") BODY "def") BODY "ghi") 91 select "Archive.2004" 92 UID fetch 1:* (FLAGS) 93 uid SEARCH UNDELETED (OR (OR (OR BODY "xyz" BODY "abc") BODY "def") BODY "ghi") 94 select "Archive.2004.2005" 95 UID fetch 1:* (FLAGS) 96 uid SEARCH UNDELETED (OR (OR (OR BODY "xyz" BODY "abc") BODY "def") BODY "ghi") 97 select "Archive.2004.2005.2006" 98 UID fetch 1:* (FLAGS) 99 uid SEARCH UNDELETED (OR (OR (OR BODY "xyz" BODY "abc") BODY "def") BODY "ghi") 100 select "Archive.2004.2005.2006.2007" 101 UID fetch 1:* (FLAGS) 102 uid SEARCH UNDELETED (OR (OR (OR BODY "xyz" BODY "abc") BODY "def") BODY "ghi") 103 select "Archive.2004.2005.2006.2007.2008" 104 UID fetch 1:* (FLAGS) 105 uid SEARCH UNDELETED (OR (OR (OR BODY "xyz" BODY "abc") BODY "def") BODY "ghi") 106 IDLE Patrick. - -- STAR Software (Shanghai) Co., Ltd. http://www.star-group.net/ Phone: +86 (21) 3462 7688 x 826 Fax: +86 (21) 3462 7779 PGP key: https://stshacom1.star-china.net/keys/patrick_nagel.asc Fingerprint: E09A D65E 855F B334 E5C3 5386 EF23 20FC E883 A005 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFIooxq7yMg/OiDoAURAhb9AJ4jOaK+eHXcSwJTAER8xEKIlJJt0gCgtZan wJm05V0F03gj+6YxbNOtCew= =jID/ -----END PGP SIGNATURE-----

5 5

[Dovecot] Migrating mbox to maildir
by Mike Hobbs 15 Aug '08

15 Aug '08

Sorry to bother everyone but I was wondering if it is possible for Dovecot to handle mbox AND maildir at the same time? Example: I want to convert from UW Imap using mbox to Dovecot using maildir. Do I need to convert ALL my users mbox mailboxes to maildir right away or can I convert them one at a time? I'd like to use maildir with all my new users, but I'd like to be able to continue using mbox for my old users and slowly convert them as I get time. Is this possible? I know Dovecot supports both formats, I just couldn't find anything in the install notes about using both at the same time. Thank you, mike

3 2

[Dovecot] Webmail app ... again.
by Roderick A. Anderson 15 Aug '08

15 Aug '08

There was a thread several weeks (or months) ago on webmail applications. I didn't like any of the options and only found few that I did but they were either expensive or not maintained. So ... I raised the question on the Catalyst Framework list about Perl based webmail apps and got nothing usable. It came down to what would it take to build a Perl (Cat) webmail app. Several others on the list got interested so we decided to build it. The main issue I run into is my lack of understanding of the ins-and-outs of the IMAP specification and the features that come with using Dovecot. (Oh yeah. Dovecot was the preferred IMAP server!) Another project I'm working on uses IMAP and what I found was there is a great quantity of Perl modules for dealing with IMAP. A great quantity! Unfortunately many of them assume a deeper knowledge of IMAP than I have so are very confusing. What I'm looking for is a good reference, besides the RFC, on IMAP. Anything out there? Electronic or dead-tree is fine. (A book of Dovecot would be neat too.) TIA, Rod --

10 17

Re: [Dovecot] Marking as Read causes Body.Peek on ALL messages - Reasonable?
by Daniel Watts 15 Aug '08

15 Aug '08

>> I've noticed when I select a folder of messages (Thunderbird) and >> mark them all as read (or unread) it produces the following IMAP >> transcript: >> >> Source Destination Info >> c.c.c.c s.s.s.s Request: DONE >> s.s.s.s c.c.c.c Response: 20 OK Idle completed. >> c.c.c.c s.s.s.s Request: 21 uid store 1:20 -Flags (\Seen) >> s.s.s.s c.c.c.c Response: * 1 FETCH (UID 1 FLAGS (\Recent >> NonJunk)) >> c.c.c.c s.s.s.s Request: 22 UID fetch 2 (UID RFC822.SIZE >> BODY.PEEK[]) >> s.s.s.s c.c.c.c Response: * 2 FETCH (UID 2 RFC822.SIZE 1339 >> BODY[] {1339} > .. > > Looks a bit stupid. But I'd guess it's related to Thunderbird being > configured to download mail when reading it and it treats setting > \Seen the same as reading it. Just a guess though. It becomes a bit of a problem when done in a folder of 40,000 messages - locks up the program for ages and hammers the server a bit too. > >> Is this reasonable? I thought it would be possible to just send a >> list of message UIDs and say mark these as /seen /unseen etc. > > Sure, it would be possible. Also if Thunderbird really wants to fetch > these messages' bodies, it could have done it using a single command > instead of 20 separate ones.. > Perhaps it does it one by one incase there are a lot of messages.... but it could chunk them at least. Timo - thanks as always for your help with this, particularly as it is slightly OT. Ever thought about writing your own mail client? =) Perhaps LightningDove! The more I use Thunderbird the more I find it totally insane. Still better than going back to Outlook (thought not tried 2007 yet). Dan

2 2

[Dovecot] Request queue is full
by Raphael Bittencourt S. Costa 14 Aug '08

14 Aug '08

Hello all, Today I had problems on one of the servers. Dovecot stopped working and I got lots of "Request queue is full" on logs. Aug 14 16:49:45 mailserver03 dovecot: auth(default): ldap(xxx(a)xxx.com.br): Request queue is full Aug 14 16:49:45 mailserver03 dovecot: auth(default): ldap(xxxxx(a)xxxx.com.br): Request queue is full Aug 14 16:49:45 mailserver03 dovecot: auth(default): ldap(xxxx(a)xxxxx.com,10.0.3.1): Request queue is full Only after a restart on dovecot daemon the services worked again. Does anyone know how can I fix this problem? The server were with about 900 imap connections and 300 pop3 connections. # 1.1.1: /etc/dovecot//dovecot.conf syslog_facility: local1 protocols: imap pop3 ssl_disable: yes disable_plaintext_auth: no shutdown_clients: no login_dir: /usr//var/run/dovecot/login login_executable(default): /usr//libexec/dovecot/imap-login login_executable(imap): /usr//libexec/dovecot/imap-login login_executable(pop3): /usr//libexec/dovecot/pop3-login login_process_per_connection: no login_greeting_capability(default): yes login_greeting_capability(imap): yes login_greeting_capability(pop3): no login_process_size: 128 login_processes_count: 30 login_max_processes_count: 1024 login_max_connections: 512 max_mail_processes: 10240 mail_max_userip_connections(default): 20 mail_max_userip_connections(imap): 20 mail_max_userip_connections(pop3): 10 mail_uid: 1033 mail_gid: 1033 mail_location: maildir:%h/Maildir mail_executable(default): /usr//libexec/dovecot/imap mail_executable(imap): /usr//libexec/dovecot/imap mail_executable(pop3): /usr//libexec/dovecot/pop3 mail_plugins(default): quota imap_quota autocreate mail_plugins(imap): quota imap_quota autocreate mail_plugins(pop3): quota mail_plugin_dir(default): /usr//lib/dovecot/imap mail_plugin_dir(imap): /usr//lib/dovecot/imap mail_plugin_dir(pop3): /usr//lib/dovecot/pop3 pop3_no_flag_updates(default): no pop3_no_flag_updates(imap): no pop3_no_flag_updates(pop3): yes pop3_uidl_format(default): %08Xu%08Xv pop3_uidl_format(imap): %08Xu%08Xv pop3_uidl_format(pop3): %f pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls namespace: type: private prefix: INBOX. inbox: yes list: yes subscriptions: yes auth default: mechanisms: plain login passdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf userdb: driver: prefetch userdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf socket: type: listen master: path: /var/run/dovecot/auth-master mode: 438 plugin: quota: maildir quota_rule: *:bytes=10240 quota_rule2: *:messages=30000 quota_rule3: Trash:bytes=10%% autocreate: SPAM.E Spam autocreate2: SPAM.Marcar Spam autocreate3: SPAM autocreate4: SPAM.Desmarcar Spam []s, Raphael Costa

1 0

[Dovecot] restricting shared folders access
by Andrew Von Cid 14 Aug '08

14 Aug '08

Hi all, I have a dovecot setup with virtual users and a passwd-file passdb. All users have the same uid and gid. Recently I got my public folders working using namespaces and they work great. However, now I'm trying to share a folder between a limited number of users and so far I failed to get it working. Symlinks aren't an option because users need to be able to create subfolders of the shared folder so I'm trying to do it with namespaces but I'm not sure how to restrict access to a limited number of users. I tried doing it with groups. I made sure that the shared folder's group is set to 'staff' and the mode is 070, I also changed the group of a few virtual users to 'staff'. However, when I try accessing the shared folder I get a permission denied error (although the user is in the staff group). Can someone please recommend the best way to do this? Should I look into ACL's? Many thanks, Andrew.

2 4

Re: [Dovecot] Cyrus vs Dovecot
by kbajwa 14 Aug '08

14 Aug '08

Hello: I think you are missing a point which is most important, i.e., what type of support Cyrus vs Dovecot offers. In my experience: Cyrus = 0 Dovecot = 100 My personal experience. Kirt

10 14

[Dovecot] Plugin when downloading mail
by martijn＠youngguns.nl 14 Aug '08

14 Aug '08

Is there a way to modify mail messages when they are downloaded using a special login. eg. my normal login for dovecot is martijn(a)youngguns.nl but when I log in using martijn(a)dosomething.youngguns.nl I would like to download my mail which are processed using a Perl script. The Perl script will modify the content of the message (the message body). So I don't want to change the header or IMAP flags. Martijn

3 2

[Dovecot] Corrupted index cache files
by Mike Abbott 14 Aug '08

14 Aug '08

I see these errors more often than I'd like from Dovecot-1.1.2 on Mac OS X 10.5.4 (names and numbers elided): Corrupted index cache file %s: Corrupted virtual size for uid=%d: %d ! = %d Corrupted index cache file %s: Broken virtual size for mail UID %d Corrupted index cache file %s: used_file_size too large How bad are these? What should I look for to find out why they happen? Other details: File system is HFS+ Mail store is maildir Hardware is Intel (Mac Pro) Thanks.

3 10

[Dovecot] Has anyone ever seen outlook do single sign on with dovecot/etc?
by Jason Gunthorpe 14 Aug '08

14 Aug '08

Hey all, I'm curious, has anyone been able to get outlook to do single sign on with a linux IMAP/SMTP back end? I have it doing NTLM authentication via the dovecot winbind module with Samba 3.2 just fine, but I have yet to see it try to use the cached windows logon credentials.. It appears to do an NTLM exchange with a blank password and then prompt for a password and then do an exchange with the given password. It does the same thing if PLAIN authentication is used. I'm starting to suspect MS deliberately hobbled outlook so that it uses the SSPI to exchange an entered password but not ever the logon credentials.. Does anyone know different? What a topsy-turvy world when thunderbird using SSPI works better on Windows than outlook. :| Thanks, Jason

1 0

[Dovecot] Disabling access for one user
by Kenneth Porter 14 Aug '08

14 Aug '08

I'm converting my system from mbox to Maildir one user at a time, and I'd like to disable access for the user I'm working on. Is there a way to tell Dovecot to lock out a specific user? Perhaps with a control file in the home directory? At the same time, how can I get sendmail+procmail to tempfail incoming messages for one user until I'm done?

5 9