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[Dovecot] imap-zlib patch to fix runaway imap process
by Mike Abbott 22 Apr '10

22 Apr '10

Here is a patch to fix the problem where an imap process runs away when imap-zlib is in use. The backtrace showed: io_loop_handler_run -> stream_send_io -> client_output -> o_stream_flush -> o_stream_zlib_flush -> o_stream_zlib_send_flush When o_stream_zlib_flush returns 0, stream_send_io reinstates the IO_WRITE event, causing the infinite loop. diff -ur dovecot-2.0.beta4/src/plugins/zlib/ostream-bzlib.c dovecot-2.0.beta4+fix/src/plugins/zlib/ostream-bzlib.c --- dovecot-2.0.beta4/src/plugins/zlib/ostream-bzlib.c 2010-02-12 20:22:07.000000000 -0600 +++ dovecot-2.0.beta4+fix/src/plugins/zlib/ostream-bzlib.c 2010-04-20 19:15:29.000000000 -0500 @@ -122,15 +122,15 @@ static int o_stream_bzlib_flush(struct ostream_private *stream) { struct bzlib_ostream *zstream = (struct bzlib_ostream *)stream; + int ret; if (o_stream_bzlib_send_flush(zstream) < 0) return -1; - if (o_stream_flush(zstream->output) < 0) { + ret = o_stream_flush(zstream->output); + if (ret < 0) zstream_copy_error(zstream); - return -1; - } - return 0; + return ret; } static ssize_t diff -ur dovecot-2.0.beta4/src/plugins/zlib/ostream-zlib.c dovecot-2.0.beta4+fix/src/plugins/zlib/ostream-zlib.c --- dovecot-2.0.beta4/src/plugins/zlib/ostream-zlib.c 2010-02-18 22:01:56.000000000 -0600 +++ dovecot-2.0.beta4+fix/src/plugins/zlib/ostream-zlib.c 2010-04-20 19:15:29.000000000 -0500 @@ -184,15 +184,15 @@ static int o_stream_zlib_flush(struct ostream_private *stream) { struct zlib_ostream *zstream = (struct zlib_ostream *)stream; + int ret; if (o_stream_zlib_send_flush(zstream) < 0) return -1; - if (o_stream_flush(zstream->output) < 0) { + ret = o_stream_flush(zstream->output); + if (ret < 0) zstream_copy_error(zstream); - return -1; - } - return 0; + return ret; } static ssize_t

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[Dovecot] Quota Issue
by Peter Fraser 21 Apr '10

21 Apr '10

Hi All I'm using dovecot version 1.2.4_1 and I noticed something strange. I checked the list but so far I haven't found anything that exactly fits my setup. I'm using maildirs and ldap as a backend to authenticate. A user went over quota, realized it and proceeded to delete a lot of email. Even now, after about 15 minutes, the quota indicator is still showing that he is over quota even though the users mailbox size is down by over 200MB. Why isn't Dovecot showing the change, and is there a way around this? Thanks for any help.

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[Dovecot] corrupted index cache file, physcial size, in migration to snow leopard
by Norman Packard 21 Apr '10

21 Apr '10

Hi, I am in the middle of migrating a server from Apple's leopard to snow leopard. Having big problems with migrating mail to dovecot. The version is: # dovecotd --version 1.1.17apple0.5 and I use the migration script provide by Apple, /usr/libexec/dovecot/migrate_mail_data.pl The current problems concern migrating imap accounts. The old data typically shows up to mail clients as only partially migrated, with some issues there, like folders change from being listed on the server to being listed locally, but the biggest problem is that many many messages and folders have disappeared from view. But on the server, they seem to be there, in their correctly migrated place. The log files are full of messages like the ones below, which I'm guessing has something to do with the problem. The number of files with this problem is huge. Are there any scripts to rebuild the index cache files with correct physical sizes? Thanks in advance for any help! Best, Norman Apr 21 08:05:47 newhot dovecot[31163]: IMAP(*): Corrupted index cache file /Volumes/xserveHD2/var/spool/imap/dovecot/mail/A1F36563-F978-4F99- A1FF-EC5D223F18D6/dovecot.index.cache: Corrupted physical size for uid=8142: 4325 != 4214 Apr 21 08:05:50 newhot dovecot[31163]: IMAP(*): Corrupted index cache file /Volumes/xserveHD2/var/spool/imap/dovecot/mail/A1F36563-F978-4F99- A1FF-EC5D223F18D6/dovecot.index.cache: Corrupted physical size for uid=8145: 4625 != 4510 Apr 21 08:05:53 newhot dovecot[31163]: IMAP(*): Corrupted index cache file /Volumes/xserveHD2/var/spool/imap/dovecot/mail/A1F36563-F978-4F99- A1FF-EC5D223F18D6/dovecot.index.cache: Corrupted physical size for uid=8148: 4037 != 3956 Apr 21 08:06:04 newhot dovecot[31163]: IMAP(*): Corrupted index cache file /Volumes/xserveHD2/var/spool/imap/dovecot/mail/A1F36563-F978-4F99- A1FF-EC5D223F18D6/dovecot.index.cache: Corrupted physical size for uid=8158: 4673 != 4571

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[Dovecot] Question about listescape plugin
by Luca Di Vizio 21 Apr '10

21 Apr '10

Hi all, with the listescape plugin enabled we a stange result. ** listescape enabled ** 2 list "" % * LIST (\HasChildren) "/" "INBOX" * LIST (\HasChildren) "/" "INBOX/" ** listescape disabled ** 2 list "" % * LIST (\HasChildren) "/" "INBOX" The prefix for this namespace is "INBOX/". Is correct to have "INBOX/" as result of LIST? Info about the system: - Centos 5.3/x86_64. - Dovecot 1.2.11 (I tried also with 2.0.beta4, same results). mail_nfs_storage: yes mail_nfs_index: yes mail_plugins(imap): listescape quota imap_quota namespace: type: private separator: / inbox: yes list: yes subscriptions: yes plugin: quota: maildir Thanks, Luca

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[Dovecot] POP3: Restrict Connections per timeframe
by Michael Kliewe 21 Apr '10

21 Apr '10

Hi everybody, is it possible to limit the amount of POP3 connections/logins per 15 minutes? Many hoster do that, but I cannot find a configuration setting for that. I can only limit the amount of concurrent connections per IP, but not connections per time. Michael

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[Dovecot] dovecot2 beta and gcc3(?) - compile problem
by Andre Hübner 21 Apr '10

21 Apr '10

Hello, try to compile current dovecot2 beta on older machine with gcc 3.3 Compiling results in error: libtool: link: gcc -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -o .libs/imap-login client.o client-authenticate.o imap-login-settings.o imap-proxy.o ../../src/login-common/.libs/libdovecot-login.so ../../src/lib-dovecot/.libs/libdovecot.so -lrt -Wl,-rpath -Wl,/usr/lib/dovecot ../../src/login-common/.libs/libdovecot-login.so: undefined reference to `ERR_peek_last_error' collect2: ld returned 1 exit status make[3]: *** [imap-login] Error 1 make[3]: Leaving directory `/usr/src/dovecot-1.1.rc12/dovecot-2.0.beta4/src/imap-login' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/usr/src/dovecot-1.1.rc12/dovecot-2.0.beta4/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/usr/src/dovecot-1.1.rc12/dovecot-2.0.beta4' make: *** [all] Error 2 Is there something missed on my side or problem with older gcc? dovecot 1.2.11 compiles just fine with same configure-line also there are some warnings like this: libtool: compile: gcc -DHAVE_CONFIG_H -I. -I../../../.. -I../../../../src/lib -I../../../../src/lib-settings -I../../../../src/lib-mail -I../../../../src/lib-imap -I../../../../src/lib-index -I../../../../src/lib-storage -I../../../../src/lib-storage/index -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -MT dbox-sync-rebuild.lo -MD -MP -MF .deps/dbox-sync-rebuild.Tpo -c dbox-sync-rebuild.c -fPIC -DPIC -o .libs/dbox-sync-rebuild.o In file included from dbox-sync-rebuild.c:5: ../../../../src/lib-index/mail-index-modseq.h:34: warning: parameter has incomplete type ../../../../src/lib-index/mail-index-modseq.h:52: warning: parameter has incomplete type or libtool: compile: gcc -DHAVE_CONFIG_H -I. -I../../../.. -I../../../../src/lib -I../../../../src/lib-settings -I../../../../src/lib-mail -I../../../../src/lib-imap -I../../../../src/lib-index -I../../../../src/lib-storage -I../../../../src/lib-storage/index -I../../../../src/lib-storage/index/dbox-common -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -MT mdbox-file.lo -MD -MP -MF .deps/mdbox-file.Tpo -c mdbox-file.c -fPIC -DPIC -o .libs/mdbox-file.o In file included from mdbox-storage.h:5, from mdbox-file.c:16: ../../../../src/lib-storage/mailbox-list-private.h:158: warning: parameter has incomplete type Thanks, Andre

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[Dovecot] Question about listescape
by Luca Di Vizio 21 Apr '10

21 Apr '10

Hi all, with the listescape plugin enabled we a stange result. ** listescape enabled ** 2 list "" % * LIST (\HasChildren) "/" "INBOX" * LIST (\HasChildren) "/" "INBOX/" ** listescape disabled ** 2 list "" % * LIST (\HasChildren) "/" "INBOX" The prefix for this namespace is "INBOX/". Is correct to have "INBOX/" as result of LIST? Info about the system: - Centos 5.3/x86_64. - Dovecot 1.2.11 (I tried also with 2.0.beta4, same results). mail_nfs_storage: yes mail_nfs_index: yes mail_plugins(imap): listescape quota imap_quota namespace: type: private separator: / inbox: yes list: yes subscriptions: yes plugin: quota: maildir Thanks, Luca

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[Dovecot] Checkpassword/prefetch/master_user and problems
by Emerson Pinter 20 Apr '10

20 Apr '10

Hi. I'm trying to use checkpassword for simple auth and masteruser auth. I have two programs, one called checkpassword-master (for masteruser lookup) and another called checkpassword for normal passdb and userdb lookup). All works fine for non-masteruser authentication (in this case dovecot makes a single call to checkpassword binary). But if a master-user authenticates, dovecot execute checkpassword-master binary, and then executes checkpassword binary. Checkpassword binary receive the MASTER_USER env and do all the checks correctly, when checkpassword finish, dovecot logs this message "auth(default): checkpassword: sighandler called for unknown child" and authentication fails... I'm trying checkpassword-reply and fd4 too, on 1.2.11 and 2.0b4, no success. Below is my config: auth default { mechanisms = plain passdb checkpassword { args = /srv/dovecot/checkpassword } passdb checkpassword { args = /srv/dovecot/checkpassword-master master=yes pass=yes } userdb prefetch { } } Anybody can help me ? Tks. -- Emerson Pinter Esta mensagem pode conter informações confidenciais, privilegiadas ou privadas. Caso não seja o destinatário, favor apagá-la e notificar o remetente. Saiba que o uso impróprio das informações existentes é estritamente proibido, sendo tratado conforme as normas da empresa e a legislação em vigor.

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Re: [Dovecot] setgid failed - Not owner
by Zilon X 20 Apr '10

20 Apr '10

Changed home dir of users, in my configuration they are /var/postfix/spool and /var/postfix/dovecot/run, but with no effect. I still got the "fatal setgid failed: Not owner" ( Fatal: setgid(12345(postfix)) failed with euid=12346(dovecot), gid=54322(dovecot), egid=54322(dovecot): Not owner ) 2010/4/20 Andreas Schulze <andreas.schulze(a)datev.de>: > Am 19.04.2010 16:49 schrieb Zilon X: >> postfix:x:12345:12345::/dev/null:/bin/false >> dovecot:x:12346:54322::/dev/null:/bin/false > > I would never use /dev/null as homedir. > postfix home is /var/spool/postfix, dovecot likes /var/run/dovecot. > > -- > Andreas Schulze > Internetdienste | P532 > > DATEV eG > 90329 Nürnberg | Telefon +49 911 319-0 | Telefax +49 911 319-3196 > E-Mail info @datev.de | Internet www.datev.de > Sitz: 90429 Nürnberg, Paumgartnerstr. 6-14 | Registergericht Nürnberg, GenReg Nr.70 > Vorstand > Prof. Dieter Kempf (Vorsitzender) > Dipl.-Kfm. Wolfgang Stegmann (stellvertretender Vorsitzender) > Dipl.-Kfm. Michael Leistenschneider > Jörg Rabe v. Pappenheim > Dipl.-Vw. Eckhard Schwarzer > Vorsitzender des Aufsichtsrates: Reinhard Verholen > >

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[Dovecot] zero sized messages in Maildir, corrupt filenames ?
by Rodolphe Buret 20 Apr '10

20 Apr '10

Hi, I'm starting to see more and more duplicates in my cur directory. they seem to be a copy of an incoming mail (messages share the same date) but they appears in the client as a message without subject and without sender or body. Their filename starts with an underscore and the 4th letter is a %. The rest of the filename is random (but it also includes my hostname). Which program could create such a filename ? If it's in the cur directory, it can only be dovecot, right ? Example of 2 probably related messages in the cur folder: 1785 Apr 20 09:18 msg.zMeU:2,d 0 Apr 20 09:18 _J9C%jVVzLB.{myhostname}:2, In addition, it seems that since we have started to use thunderbird 3, indexes are often corrupt, mailboxes needs reconstruction and so on. Could it be an incompatibility with my version of dovecot ? I've disabled my thunderbird filters that were moving the incoming mail automatically, no difference. I use no antivirus (linux imap client mainly). I can (probably) upgrade to dovecot-1.2.11-3_108 but I'd like to be sure that I won't create more problems before doing it. The homedirs are NFS mounted. dovecot 1.1.7-0_84 squirrelmail 1.4.19 postfix 2.6.5-1 Here is my dovecot -n # 1.1.7: /etc/dovecot.conf # OS: Linux 2.6.18-128.1.1.el5xen x86_64 Red Hat Enterprise Linux Server release 5.3 (Tikanga) log_path: /var/log/dovecot.log protocols: imap imaps listen: * login_dir: /var/run/dovecot/login login_executable: /usr/libexec/dovecot/imap-login mail_location: maildir:~/Maildir mmap_disable: yes mail_nfs_storage: yes mail_nfs_index: yes lock_method: dotlock auth default: passdb: driver: pam userdb: driver: passwd plugin: quota: Thanks for your time, -- Rodolphe Buret Ecole Polytechnique Fédérale de Lausanne System Administrator EPFL STI-IEL-ESL Tel: +41-21-693-0922 ELG 136 (bâtiment ELG) Fax: +41-21-693-0909 Station 11 Email: rodolphe.buret(a)epfl.ch CH-1015 Lausanne Switzerland

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