- dovecot - dovecot.org

Re: [Dovecot] Imap folders missing after updating
by Mark E. Mallett 09 May '06

09 May '06

> LOL, there are only about a billion web pages that are "2 clicks" from > the front page of any site. True if you are just wandering around willy-nilly. It's not like it's tacked up on a pole on Alpha Centauri. I was opining that "Documentation" -> "Upgrading" is pretty easy to find, and not at all in line with "undocumented configuration changes." Come to think of it, it's only one click away from where the README tells you to look. But you do have to look, and care to look. Me, I was grateful that it was there; it didn't have to be. > This is why people still stay in the MS heard. Any number of problems > like this would cost most companies thousands of dollars to resolve. > It's much cheaper just to pay a company like MS who take upgrade > transitions seriously. Not gonna touch that. And true transition starts from within :) People won't bite too hard if you ask, either. Nip, maybe. mm (who obviously should be working)

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[Dovecot] ssl-build-param
by Jackie Hunt 08 May '06

08 May '06

Hi all, I'm trying to get dovecot up and running on an AIX 5.2 system with openssl 0.9.8a. Everything compiles fine, but when I start dovecot I find in the log: dovecot: May 08 13:39:14 Info: Dovecot v1.0.beta7 starting up dovecot: May 08 13:39:14 Info: Generating Diffie-Hellman parameters for the first time. This may take a while.. dovecot: May 08 13:39:14 Error: ssl-build-param: Trying to allocate 0 bytes dovecot: May 08 13:39:14 Error: child 18998 (ssl-build-param) killed with signal 6 I searched the archives of the mailing list and didn't have any luck. Any help would be created appreciated. Please reply directly to me as well as the list. Thanks much! Jackie --- Jackie Hunt ACNS Voice: (970) 663-3789 Colorado State University FAX: (970) 491-1958 Fort Collins, CO 80523 Email: jackie.hunt(a)colostate.edu

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[Dovecot] Unrecognized event: kevent
by Dillon 08 May '06

08 May '06

Hey guys, I just subscribed to the list about 15 minutes ago so i apologize in advance if this is something that has already been discussed. I skimmed through the web archives and I didn't see anything. I'm running FreeBSD/amd64 and after upgrading from 1.0b3 to 1.0b7 I am experiencing the following May 8 13:18:22 loveturtle dovecot: imap-login: Login: user=<turtle>, method=plain, rip=216.89.228.116, lip=216.91.90.11, TLS May 8 13:18:22 loveturtle dovecot: IMAP(turtle): Unrecognized event: kevent {.ident = 2, .filter = 0xfffffffe, .flags = 0x0000, .fflags = 0x00000000, .data = 0x00004000} May 8 13:18:22 loveturtle dovecot: child 32279 (imap) killed with signal 6 Immediately after this imap respawns and then prints this again and crashes. it happens about three or four times a second until i shut down dovecot. I reverted back to 1.0b3 and everything is happy again. Cheers, Dillon

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[Dovecot] kevent error (1.0.b7) - Is this a FreeBSD-only problem?
by Odhiambo WASHINGTON 08 May '06

08 May '06

Hello everyone, The problem below has been reported, but I did not see any response! <cut> | | I'm also seeing this bug while testing the forthcoming 1.0.b7 FreeBSD | | port under 6.1-PRERELEASE: | | | | Info: imap-login: Login: user=<wibble>, method=PLAIN, rip=10.0.0.2, | | lip=10.0.0.2, TLS | | dovecot: Error: IMAP(isometry): Unrecognized event: kevent {.ident = | | 2, .filter = 0xfffffffe, .flags = 0x0001, .fflags = 0x00000000, .data | | = 0x00004000} | | dovecot: Error: child 7254 (imap) killed with signal 6 </cut> So, I am wondering if this a problem applying only to FreeBSD. When I downgrade to beta5, this problem is not there at all!! -Wash http://www.netmeister.org/news/learn2quote.html DISCLAIMER: See http://www.wananchi.com/bms/terms.php -- +======================================================================+ |\ _,,,---,,_ | Odhiambo Washington <wash(a)wananchi.com> Zzz /,`.-'`' -. ;-;;,_ | Wananchi Online Ltd. www.wananchi.com |,4- ) )-,_. ,\ ( `'-'| Tel: +254 20 313985-9 +254 20 313922 '---''(_/--' `-'\_) | GSM: +254 722 743223 +254 733 744121 +======================================================================+ On-line, adj.: The idea that a human being should always be accessible to a computer.

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[Dovecot] Problem with "INDEX" in default_mail_env, and pop3
by Andrea Dell'Amico 08 May '06

08 May '06

Hello all, I've a problem with maildir, pop3 and relocated indexes. My configuration is: default_mail_env = maildir:%h/Maildir:INDEX=/var/dovecot/index/% u:CONTROL=/var/dovecot/control/%u I created the "/var/dovecot/{index,control}/%u" directories, each one have rights 700 and the ownership is assigned to the user. When the pop clients connect, they fail with the error dovecot: POP3(<username>): mkdir(/var/dovecot/index/<username>/.INBOX) failed: Permission denied I'm using dovecot 1.0.beta7, authentication is pam. I'm using the following settings, too: valid_chroot_dirs = /home:/var/spool/mail:/var/dovecot/index:/var/dovecot/control (last two directories added when i changed the "default_mail_env" setting). Does anybody know what I'm doing wrong? I need to move indexes in a file system without quota. Thanks in advance, andrea -- "Thinking meat! You're asking me to believe in thinking meat!" - Terry Bisson <http://www.terrybisson.com/meat.html>

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[Dovecot] Maildir folder hierarchy question
by Richard Leszczynski 08 May '06

08 May '06

Hello all, I am trying to set up Dovecot to use a particular maildir folder hierarchy and have a problem that relates to the inbox. the folder hierarchy I want in /.../Maildir/ is: .inbox cur new tmp .imap.index.files-for-inbox .sent-items cur new tmp .imap.index.files-for-sent-items however the hierarchy that dovecot gives me is .inbox (unused) .INBOX .imap.index.files-for-.INBOX cur new tmp .sent-items cur new tmp .imap.index.files-for-.sent-items I would like to have the (cur,new,tmp) folders associated with the the .inbox placed in the .inbox directory, not alongside it in the main maildir directory. Dovecot appears to do this automatically for other folders. I'm not too bothered if the .inbox folder has to be capitalised. Is this possible? I suspect from reading the Dovecot Q&A that it may not be as the rootdir has special significance with IMAP but I would like confirmation. I've currently set my default_mail_env as: default_mail_env = maildir:/home/%u/mail/maildir:INBOX=/home/%u/mail/maildir/.inbox which I thought should do accomplish what I want but it has no apparent effect. I'm running SUSE 10.0 with Dovecot 0.99.14-5 (as installed by Yast). KMail and Outlook are being used to access Dovecot. Can anyone help? thank you, Richard L ___________________________________________________________ 24 FIFA World Cup tickets to be won with Yahoo! Mail http://uk.mail.yahoo.com

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[Dovecot] CVS forked into development/stable branches
by Timo Sirainen 08 May '06

08 May '06

New branch created to CVS: branch_1_0 It's going to stabilize into v1.0 Dovecot, hopefully somewhat soon. I'll start adding new larger features into HEAD, so you might want to switch to branch_1_0 if you're currently using Dovecot from CVS. You can do this with: cvs up -r branch_1_0 The nightly snapshots are from branch_1_0, at least for now.

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[Dovecot] different login_greeting for pop3 & imap?
by Geert Hendrickx 08 May '06

08 May '06

Hi, I have a tiny feature request for Dovecot: could it optionally have different login_greetings for pop3 and imap connections? e.g. I want it to say "Dovecot on pop.mycompany.com ready" on pop3 connections and "Dovecot on imap.mycompany.com ready" on imap connections. Would that be possible? TIA, Geert

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[Dovecot] configuring dovecot-lda takes forever...
by Joseba Torre 08 May '06

08 May '06

Hi, I want to try dovecot-lda, but the ./configure doesn't seem to finish... I've followed the installation instructions: cvs -d :pserver:anonymous@dovecot.org:/home/cvs co dovecot-lda cd dovecot-lda/ ./autogen.sh ./configure --with-dovecot=../dovecot (dovecot source tree -from cvs- is in ../dovecot) Everything seems to go ok but the message config.status: creating Makefile never ends. The problem seems to be in this process: sed -f ./confstatn25334/subs-3.sed (i can attach the file if needed). Any hint? Aaaaaaaaaaagur.

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[Dovecot] dovecot error: unrecognized event
by dovecot＠bengrimm.net 07 May '06

07 May '06

If you're using the FreeBSD port: Go to /usr/ports/mail/dovecot Edit Makefile Find the line: .if !defined(WITHOUT_KQUEUE) Change it into: .if defined(WITH_KQUEUE) Then: make deinstall && make install Worked for me.

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[Dovecot] Dovecot EOF bug on FreeBSD 6.0
by Matt Bostock 06 May '06

06 May '06

Hello, We're running Dovecot 1.0.7 on FreeBSD 6.0. Now and then I'll see a POP error ('EOF'), which is remedied simply by restarting Dovecot. Is this a known issue? Kind regards, Matt

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[Dovecot] rebuilding dovecot 1.0 beta7 at.src.rpm mysql error
by dave 06 May '06

06 May '06

hi all i'm trying to rebuild the 1.0 beta 7 src rpm from atrpms.net to use mysql 5, instead of mysql 4 but i'm having issues when it gets to the mysql part of the make i have mysql 5 installed (via mysql.com rpm's) i changed the spec file where it says Buildrequires to say MySQL-devel (instead of mysql-devel) but it always comes back with this error, and i don't know what it means, i also tried leaving it as mysql-devel, but still get the same error when i run rpmbuild -ba dovecot.spec && rpm -Uvh --force ../RPMS/i386/dovecot* am i doing this completely wrong, is there something else i need to do to be able to use mysql 5? /usr/lib/mysql/libmysqlclient.a(sha1.o)(.text+0x60): In function `sha1_result': : multiple definition of `sha1_result' ../lib/liblib.a(sha1.o)(.text+0x8e7):/usr/src/redhat/BUILD/dovecot-1.0.beta7/src/lib/sha1.c:233: first defined here /usr/bin/ld: Warning: size of symbol `sha1_result' changed from 191 in ../lib/liblib.a(sha1.o) to 126 in /usr/lib/mysql/libmysqlclient.a(sha1.o) collect2: ld returned 1 exit status make[3]: *** [dovecot-auth] Error 1 make[3]: Leaving directory `/usr/src/redhat/BUILD/dovecot-1.0.beta7/src/auth' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/usr/src/redhat/BUILD/dovecot-1.0.beta7/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/usr/src/redhat/BUILD/dovecot-1.0.beta7' make: *** [all] Error 2 error: Bad exit status from /var/tmp/rpm-tmp.84952 (%build) thanks dave -- http://dtracorp.com

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[Dovecot] Sending email over IMAP?
by Marc Perkel 06 May '06

06 May '06

I'm advocating for a change in the IMAP specification to allow outgoing email to be sent over the same connection as incoming rather that having to separately configure outgoing SMTP email. There are two significant advantages to this concept. 1) It would greatly simplify setup for clients as they would only have to configure one connection rather than two. 2) Spam reduction by authentication. The sending of email over the same connection tells the server that the person who is the sender of the email also has demonstrated they have access to read the account. This would be a powerful whitelisting criteria for eliminating fake senders. So - my question. It seems that it would be easy to do this if there were a standard. Dovecot would merely hand incoming email off to the outgoing SMTP server. Besides the difficulty of getting a standard created, am I right on my assumptions?

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[Dovecot] UID and GID problems
by Simon Windsor 06 May '06

06 May '06

Hi I have been using dovecot for a while now to support a number of virtual users via a postgres table. The dovecot user chown is dovecot:dovecot, and for each domain, I use a single GID, so for example domain1 is 1001:dovecot, domain2 is 2001:dovecot. All directories are owned by 1001:dovecot or 2001:dovecot. The works well most of the time, but occasionally, some user files are owned by dovecot:dovecot, and others by gid:dovecot. Is this a know issue? Any help would be appreciated. Simon -- Simon Windsor Eml: simon.windsor(a)cornfield.org.uk Tel: 01454 617689 Mob: 07960 321599

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[Dovecot] dovecot LDA w/virtual domains and postfix
by Leah Cunningham 05 May '06

05 May '06

Hi, I've been trying to follow the documentation that I am finding, but am running into trouble getting things set up correctly for postfix + virtual domains (using ldap) with dovecot LDA. I can get it to work without LDA, but I'm running into permissions problems when I try to run with LDA. I am wondering if anyone has any good examples of configuring this. I basically have a 'vmail' user (1015) that owns a /var/vmail/domains directory tree. I have set the following in postfix master.cf: # Dovecot LDA dovecot unix - n n - - pipe flags=DRhu user=vmail:mail argv=/usr/lib/dovecot/deliver -d ${recipient} In main.cf dovecot_destination_recipient_limit = 1 virtual_transport = dovecot virtual_mailbox_base = /var/vmail/domains virtual_mailbox_maps = ldap:/etc/postfix/ldap-mailbox.cf virtual_mailbox_domains = ldap:/etc/postfix/ldap-vdoms.cf virtual_uid_maps = static:1015 virtual_gid_maps = static:12 home_mailbox = Maildir/ and in dovecot.conf: protocols = imap imaps pop3 pop3s ssl_disable = no ssl_cert_file = /etc/ssl/certs/sauerkraut.heinous.org.crt ssl_key_file = /etc/ssl/private/sauerkraut.heinous.org.key mail_extra_groups = mail valid_chroot_dirs = /var/vmail/domains default_mail_env = maildir:/var/vmail/domains/%d/%n/mail protocol lda { postmaster_address = postmaster(a)frauerpower.com } protocol imap { } protocol pop3 { } auth default { mechanisms = plain passdb ldap { args = /etc/dovecot/dovecot-ldap.conf } userdb ldap { args = /etc/dovecot/dovecot-ldap.conf } user = root } auth default_with_listener { mechanisms = plain userdb ldap { args = /etc/dovecot/dovecot-ldap.conf } passdb ldap { args = /etc/dovecot/dovecot-ldap.conf } socket listen { master { path = /var/run/dovecot-auth-master mode = 0600 user = vmail group = mail } } } plugin { } However, I must be missing something. I get the following when trying to send the user a message: setuid(1015) failed: Operation not permitted Doing 'postmap -q leah(a)frauerpower.com ldap:/etc/postfix/ldap-mailbox.cf' returns 'frauerpower.com/leah/mail/' which, in the non LDA mode worked okay, plonking the mail under /var/vmail/domains/frauerpower.com/leah/mail How is this sort of thing normally set up? Apologies in advance for my ignorance, I am pretty new to dovecot. Leah

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Saving Direct to Shared Mailbox (Was: Re: [Dovecot] Sending email over IMAP?)
by Timothy White 05 May '06

05 May '06

Thinking along similar lines to this sending email via IMAP... What I am thinking, is using Shared Folders/Mailbox's, like mailing lists. We have the power of ACL's, and if you have the appropriate permissions, you can 'append' emails to the folder. Except, when you think of a mailing list, you usually just hit reply. One of the projects I am working on, will be setup with a number of shared folders, an 'official' folder that everyone has read access to, (probably thier own index files as well, so the Seen flag isn't global), and a few admins have write access to. The problem still comes, as to the easiest way to 'send emails' to the folder. I could set up a virtual user, that delivers to that folder, but then you need a second system of ACL's that determine who can send emails to the folder.... Unless, Dovecot LDA handles that.... So, other than lack of client support for saving directly to a folder, instead of sending to a folder... Can Dovecot LDA do what I want, or be made to do what I want? I have no problems having a 'virtual' user that people send the emails to, as long as Dovecot LDA will handle the ACL's for it as well. Any ideas of how to solve this problem, or if Dovecot LDA can/will do it? Tim -- Linux Counter user #273956

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[Dovecot] Bug in yesterday's CVS..
by Apps Lists 05 May '06

05 May '06

Hi Timo. I'm doing some testing with yesterday's CVS code and believe I've found a bug. In SquirrelMail, I get 5 messages in INBOX (doesn't matter how). I click "Toggle All" then "Delete". All 5 messages move to Trash. The Trash folder gets a link "expunge". I click that and get the following error: ERROR : Bad or malformed request. Query:STORE 1:6 +FLAGS (\Deleted) Server responded: Error in IMAP command STORE: Invalid messageset There are 5 messages in Trash, not 6. After this error is displayed, I see the following in syslog: May 2 09:37:24 dev3 dovecot: IMAP(jtest): Fixed index file /var/mailstore/72/af/375887/Maildir/.Trash/dovecot.index: first_recent_uid_lowwater 10 -> 9 (this might not actually be the right message for the error, but it's always first_recent_uid_lowwater getting decremented by 1) If I hit refresh in the browser, I can then click Expunge without issue once first_recent_uid_lowwater is fixed. I am able to replicate this easily in NFS, GFS (cluster) and local disk. Steve

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[Dovecot] dovecot LDA w/virtual domains and postfix
by Leah Cunningham 05 May '06

05 May '06

Hi, I am running into trouble getting things set up correctly for postfix + virtual domains (using ldap) with dovecot LDA. I can get it to work without LDA, but I'm running into permissions problems when I try to run with LDA. I am wondering if anyone has any good examples of configuring this. It would seem that we can't deliver in setuid mode, even though the documentation seemed to indicate that we can. I basically have a 'vmail' user (1015) that owns a /var/vmail/domains directory tree. I have set the following in postfix master.cf: # Dovecot LDA dovecot unix - n n - - pipe flags=DRhu user=vmail:mail argv=/usr/lib/dovecot/deliver -d ${recipient} In main.cf dovecot_destination_recipient_limit = 1 virtual_transport = dovecot virtual_mailbox_base = /var/vmail/domains virtual_mailbox_maps = ldap:/etc/postfix/ldap-mailbox.cf virtual_mailbox_domains = ldap:/etc/postfix/ldap-vdoms.cf virtual_uid_maps = static:1015 virtual_gid_maps = static:12 home_mailbox = Maildir/ and in dovecot.conf: protocols = imap imaps pop3 pop3s ssl_disable = no ssl_cert_file = /etc/ssl/certs/sauerkraut.heinous.org.crt ssl_key_file = /etc/ssl/private/sauerkraut.heinous.org.key mail_extra_groups = mail valid_chroot_dirs = /var/vmail/domains default_mail_env = maildir:/var/vmail/domains/%d/%n/mail protocol lda { postmaster_address = postmaster(a)frauerpower.com } protocol imap { } protocol pop3 { } auth default { mechanisms = plain passdb ldap { args = /etc/dovecot/dovecot-ldap.conf } userdb ldap { args = /etc/dovecot/dovecot-ldap.conf } user = root } auth default_with_listener { mechanisms = plain userdb ldap { args = /etc/dovecot/dovecot-ldap.conf } passdb ldap { args = /etc/dovecot/dovecot-ldap.conf } socket listen { master { path = /var/run/dovecot-auth-master mode = 0600 user = vmail group = mail } } } plugin { } However, I must be missing something. I get the following when trying to send the user a message: May 5 10:42:48 sauerkraut deliver: setuid(1015) failed: Operation not permitted May 5 10:42:48 sauerkraut postfix/pipe[28978]: ECD7FF5E: to=<leah(a)frauerpower.com>, orig_to=<root(a)oogabooga.heinous.org>, relay=dovecot, delay=1, status=bounced (Command died with status 89: "/usr/lib/dovecot/deliver") Doing 'postmap -q leah(a)frauerpower.com ldap:/etc/postfix/ldap-mailbox.cf' returns 'frauerpower.com/leah/mail/' which, in the non LDA mode worked okay, plonking the mail under /var/vmail/domains/frauerpower.com/leah/mail How is this sort of thing normally set up? Apologies in advance for my ignorance, I am pretty new to dovecot. Leah

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[Dovecot] greetings and logging
by Edward Chase 05 May '06

05 May '06

Howdy, I've been working with a new CentOS installation and this is my first experience with dovecot. I would like dovecot to provide more logging, however I'm not finding much on how to alter it's logging. http://wiki.dovecot.org/DovecotFeatures speaks of having Logging Control. Can anyone point me in the right direction? Thanks. -- Edward Chase Providence College Information Technology

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[Dovecot] statfs() error message
by John Wong 05 May '06

05 May '06

i use openbsd/i386, dovecot-1.0b7 i see the error message in maillog dovecot: statfs(mail/username) failed: No such file or directory i guess the statfs() can not find the directory, because i run dovecot-imap in chroot userdb static { args = uid=34567 gid=34567 home=/var/./mail } i am sure, i have this directory "/var/mail/username", and i add "nfs_check = no" to dovecot.conf, the error message will gone

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[Dovecot] .imap locaction
by Obantec Support 05 May '06

05 May '06

Hi is it possible to have the .imap directory and sub-directory located under the same directory as mbox users. i.e /var/spool/mail/%u is where mbox files are i would like to use /var/spool/maildir/%u/.imap reason being i do not want my users /home/username used for anything otherthan their website. how big do the files under .imap get? Mark

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[Dovecot] sigsev with postfix + dovecot SASL
by Udo Rader 05 May '06

05 May '06

hi, I am just playing a bit with the dovecot SASL plugin for postfix and so far my tests have been very successfull, can't wait to get the cyrus-sasl beast replaced. However, I found a potential problem when doing some "illegal" stuff on the postfix side: -------CUT------- cerberus:/var/log# telnet smtptest 25 Trying 192.168.99.99... Connected to smtptest.bestsolution.at. Escape character is '^]'. 220 smtptest.bestsolution.at ESMTP Postfix (bestsolution.at GmbH) EHLO localhost 250-smtptest.bestsolution.at 250-PIPELINING 250-SIZE 51200000 250-ETRN 250-AUTH PLAIN DIGEST-MD5 CRAM-MD5 250-AUTH=PLAIN DIGEST-MD5 CRAM-MD5 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN AUTH somestring 535 5.7.0 Error: authentication failed: Connection lost to authentication server -------CUT------- dovecot logs this: -------CUT------- dovecot: Apr 27 10:27:36 Error: auth(default): BUG: Authentication client 4315 requested unsupported authentication mechanism somestring dovecot: Apr 27 10:27:36 Error: child 445 (auth) killed with signal 11 -------CUT------- I am very aware that "AUTH somestring" is not valid in the given context, but dovecot should not sigsev IMO. dovecot is 1.0-beta7. regards Udo Rader b e s t s o l u t i o n . a t EDV Systemhaus GmbH ------------------------------------------------------------------------ udo rader technischer leiter/CTO mobile +43 660 5263642 ------------------------------------------------------------------------ eduard-bodem-gasse 8/3 A-6020 innsbruck fax +43 512 935833 http://www.bestsolution.at phone +43 512 935834

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[Dovecot] auth-request.c: assertion failed: (*name != '\0')
by Tom Sommer 05 May '06

05 May '06

I upgraded to beta7 from alpha4, and got this error during the auth process: dovecot: auth(default): client in: AUTH 1 PLAIN service=POP3 lip=0.0.0.0 rip=0.0.0.0 resp=<hidden> dovecot: auth-worker(default): sql(webmaster(a)example.com,0.0.0.0): query: SELECT username as user, NULL as password FROM users WHERE username = 'webmaster(a)example.com' AND password = PASSWORD('mypassword') dovecot: auth(default): file auth-request.c: line 723 (auth_request_set_field): assertion failed: (*name != '\0') dovecot: child 8552 (auth) killed with signal 6 My SQL conf: password_query = SELECT username as user, NULL as password FROM users WHERE username = '%u' AND password = PASSWORD('%w') as advised in a previous discussion in this list Regards -- Tom Sommer

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[Dovecot] maildir format
by DINH Viêt Hoà 05 May '06

05 May '06

Hello Timo and other dovecot-dev or users, It looks like Dovecot accepts (with APPEND command) messages that begins with 'From[SPACE]' line, which are not valid from RFC 2822 point of view. Additionnally, Dovecot will store them as they are APPENDed, I mean with the starting 'From[SPACE]' line, which generates a bad Maildir format. http://www.qmail.org/man/man5/maildir.html states the following : << Each file in new is a newly delivered mail message. The modification time of the file is the delivery date of the message. The message is delivered without an extra UUCP- style From_ line, without any >From quoting, and without an extra blank line at the end. The message is normally in RFC 822 format, starting with a Return-Path line and a Delivered-To line, but it could contain arbitrary binary data. It might not even end with a newline. >> -- DINH Viêt Hoà

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[Dovecot] Solution: NFS & Dovecot!
by Apps Lists 05 May '06

05 May '06

Hi folks! It looks like Timo nailed down the NFS issues we've been seeing here in last night's CVS build. Anyone running Dovecot in a high-usage environment should check this out. Here are some relevant ChangeLog updates that seem to address the problem: 2006-05-02 11:11 Timo Sirainen <timo.sirainen(a)movial.fi> * src/lib-storage/index/maildir/: maildir-save.c, maildir-storage.h, maildir-sync.c, maildir-uidlist.c, maildir-uidlist.h: Adding mail to index while saving it had a race condition. Fixing it required a bit larger changes. Switched uidlist/index locking order so that uidlist is now locked first. 2006-05-02 11:04 Timo Sirainen <timo.sirainen(a)movial.fi> * src/lib-index/: mail-index-private.h, mail-index-sync-update.c, mail-index.c: mmap_disable: When syncing in-memory index from transaction log, we didn't skip external transactions which were already been in our in-memory mapping, causing "Append with UID n, but next_uid = m" errors. The build is available here: http://dovecot.org/nightly/dovecot-20060503.tar.gz Thus far, I've seen no complaints of corrupted indexes or core dumps. This is absolutely fantastic. As always... hats off to Timo. Great work! Steve

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