- dovecot - dovecot.org

[dovecot] quota
by Sebastian Pachuta 07 May '03

07 May '03

first, thx for --with-storages=maildir second, there is a problem when user exceed their quota < status INBOX (messages) > NO Internal error [2003-05-06 15:35:56] in logfile: imap(user): Can't create directory /var/mail/user/.INBOX: Disk quota exceeded 'user' is not able to get list of messages and delete some of them :( third, in logfile: imap(user2): maildir flags update: rename(/var/mail/user2/cur/1049405360.18375_0.asd, /var/mail/user2/cur/1049405360.18375_0.asd:2,T) failed: Disk quota exceeded is there any way to rename files when quota exceed?

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[dovecot] dovecot.spec
by Farkas Levente 07 May '03

07 May '03

hi, I'm just recoginze that dovecot contains an rpm spec file. unfortunately it's not too useful since an rpm -ta dovecot-.x.y.tar.gz can't be used since just the dovecot.spec.in is in the tarbar and not the actual spec file (which is in this from not useful in the above form). anyway here is my patch to the spec.in. -- Levente "Si vis pacem para bellum!" --- dovecot/dovecot.spec.in.lfarkas 2003-05-05 16:36:16.000000000 +0200 +++ dovecot/dovecot.spec.in 2003-05-05 17:04:30.000000000 +0200 @@ -1,9 +1,11 @@ # DarContact: Timo Sirainen <tss(a)iki.fi> +%define uid 96 +%define gid 96 Summary: Dovecot secure IMAP server. Name: dovecot Version: @VERSION@ -Release: 0 +Release: 1 License: GPL Group: System Environment/Daemons URL: http://dovecot.procontrol.fi/ @@ -16,14 +18,12 @@ Prefix: %{_prefix} Prereq: /usr/sbin/useradd, /usr/sbin/usermod -BuildRequires: openssl-devel %{!?rh62:, pam-devel} %{?rh62: pam} +BuildRequires: openssl-devel %{!?rh62:, pam-devel} %{?rh62: pam} gettext %description Dovecot is an IMAP server for Linux/UNIX-like systems, written with security primarily in mind. Although it's written with C, it uses -several coding techniques to avoid most of the common pitfalls. Next -release will also contain a small POP3 server. - +several coding techniques to avoid most of the common pitfalls. Dovecot can work with standard mbox and maildir formats and it's fully compatible with UW-IMAP and Courier IMAP servers as well as mail clients accessing the mailboxes directly. @@ -36,7 +36,7 @@ # # Init file for Dovecot IMAP daemon # -# chkconfig: - 54 46 +# chkconfig: 345 54 46 # description: Dovecot IMAP Daemon # # processname: dovecot @@ -101,8 +101,17 @@ exit \$RETVAL EOF +%{__cat} <<EOF >dovecot.pam +#%PAM-1.0 +auth required pam_nologin.so +auth required pam_stack.so service=system-auth +account required pam_stack.so service=system-auth +session required pam_stack.so service=system-auth +EOF + %build -export CPPFLAGS="-I/usr/kerberos/include" +export CPPFLAGS="`pkg-config --cflags-only-I openssl`" +export LDFLAGS="`pkg-config --libs-only-L openssl`" %configure \ --with-ssl="openssl" \ --with-ssldir="%{_sysconfdir}/ssl" @@ -112,27 +121,32 @@ %{__rm} -rf %{buildroot} %makeinstall %{__install} -d -m0755 %{buildroot}%{_initrddir} -%{__install} -m0755 dovecot.sysv %{buildroot}%{_initrddir}/dovecot +%{__install} -m0755 dovecot.sysv %{buildroot}%{_initrddir}/%{name} +%{__install} -m644 dovecot.pam %{buildroot}%{_sysconfdir}/pam.d/imap +%{__install} -m644 dovecot.pam %{buildroot}%{_sysconfdir}/pam.d/imaps +%{__install} -m644 dovecot.pam %{buildroot}%{_sysconfdir}/pam.d/pop3 +%{__install} -m644 dovecot.pam %{buildroot}%{_sysconfdir}/pam.d/pop3s %{__mv} -f %{buildroot}%{_sysconfdir}/dovecot-example.conf %{buildroot}%{_sysconfdir}/dovecot.conf ### Clean up buildroot -%{__rm} -rf %{buildroot}%{_datadir}/doc/dovecot/ +%{__rm} -rf %{buildroot}%{_datadir}/doc/%{name}/ %pre -/usr/sbin/useradd -M -s /sbin/nologin -r dovecot &>/dev/null || : -/usr/sbin/usermod -s /sbin/nologin dovecot &>/dev/null || : +# Add the dovecot user and group if not found +/usr/sbin/groupadd -g %{gid} -r %{name} &>/dev/null || : +/usr/sbin/useradd -d /var/run/%{name} -s /bin/false -g %{name} -M -r -u %{uid} %{name} &>/dev/null || : %post /sbin/chkconfig --add dovecot %preun if [ $1 -eq 0 ]; then - /sbin/service dovecot stop &>/dev/null || : + /sbin/service %{name} stop &>/dev/null || : /sbin/chkconfig --del dovecot fi %postun -/sbin/service dovecot condrestart &>/dev/null || : +/sbin/service %{name} condrestart &>/dev/null || : %clean %{__rm} -rf %{buildroot} @@ -142,11 +156,16 @@ %doc AUTHORS ChangeLog COPYING* NEWS README TODO %doc doc/*.conf doc/*.sh doc/*.txt %config %{_sysconfdir}/dovecot.conf -%config %{_initrddir}/dovecot +%config %{_initrddir}/%{name} +%config %{_sysconfdir}/pam.d/* %{_sbindir}/* -%{_libexecdir}/dovecot/ +%dir %{_libexecdir}/%{name} +%{_libexecdir}/%{name}/ %changelog +* Mon May 5 2003 Levente Farkas <lfarkas(a)lfarkas.org> +- update a few things in the spec file + * Tue Apr 29 2003 Dag Wieers <dag(a)wieers.com> - 0.99.9-0 - Updated to release 0.99.9.

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[dovecot] KMail?
by Joakim Ryden 07 May '03

07 May '03

Hey everyone - is anyone else having problems with Dovecot and KMail? I'm having trouble seeing my INBOX using KMail (Maildir format on the server), though all subfolders show up as normal. I suspect the problem is with KMail as all the other mail clients I've tested seem to have no such problems, they see INBOX *and* subfolders just fine, just wanted to see if anyone could confirm this behaviour? --Jo

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[dovecot] dovecot and squirrelmail
by Warren Togami 07 May '03

07 May '03

Is anyone using squirrelmail with dovecot? After a few minor tweaks squirrelmail seems to work great, but I can't seem to get rid of the "./" folder. SquirrelMail implements some workaround hacks for specific IMAP server quirks. The default setting is: $imap_server_type = 'uw'; What settings do you folks use? Thanks, Warren Togami warren(a)togami.com

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[dovecot] 0.99.9.1 - Runaway imap-login process
by Warren Togami 07 May '03

07 May '03

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND 32116 dovecot 19 0 1464 1464 1212 R 99.9 0.1 60:58 0 imap-login service dovecot stop ps -ef |grep imap-login |grep -v grep dovecot 32116 1 98 01:27 ? 01:01:33 imap-login /etc/dovecot.conf: auth_userdb = passwd uth_passdb = pam I think this was triggered while I attempted to login to IMAP with the this dovecot configuration without adding an "imap" entry to /etc/pam.d/ (auth fails). When I attempt to strace -p this runaway process, it strangely displays nothing. kill was able to get rid of it. After I added an appropriate /etc/pam.d/imap entry, auth works and I didn't see this runaway process. This is a RH9 chroot server instance running within Linux virtual server with security contexts kernel. (Think of it as a theoretically unbreakable chroot.) Any tips on what I can do to get some debugging information out of this? Thanks, Warren Togami warren(a)togami.com

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[dovecot] Re: 0.99.9.1 OpenBSD and mbox
by Alvaro Munoz-Aycuens Mtnz. 07 May '03

07 May '03

Hi all, Now it works, these are the parameters I touched, the rest remains pretty the same as the example conf: #default_mail_env =mbox:~/mail/:INBOX=/var/mail/%u #mailbox_check_interval = 1 #mbox_locks = fcntl Anyway seems that HUP doesn't fully gets dovecot to reread conf file and restart, better to use SIGUSR1?, by the way how I disable dotlocking in case I want to try. Regards Alvaro Timo Sirainen wrote: > > Right. You'd have to either disable dotlocking or make /var/mail > world-writable and sticky. Currently there's no other ways around this. > >

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[dovecot] 0.99.9.1
by Timo Sirainen 05 May '03

05 May '03

Some bugfixes: v0.99.9.1 2003-05-03 Timo Sirainen <tss(a)iki.fi> - Messages having lines longer than 8192 bytes caused problems. - There was some problems when opening a mbox first time that had been empty for a while. - Didn't compile with OpenBSD. - POP3 server crashed sometimes instead of printing error message. - If cached IMAP envelope contained literals, SEARCHing in it wrote errors to log file. For example if subject contained highascii, '"' or '\' characters this happened.

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[dovecot] 0.99.9 released
by Timo Sirainen 05 May '03

05 May '03

As promised yesterday :) BTW. I just found libsqlora8 library yesterday and I've been playing with Oracle mail storage support. Shouldn't take too long to get it working. And the NEWS file once more: v0.99.9 2003-04-28 Timo Sirainen <tss(a)iki.fi> * WARNING: mbox rewriting works now faster, but it's less likely to notice external message flag changes (it wasn't perfect before either). This also means that if you're not using index files, Dovecot may not notice changes made by another Dovecot process. This will be fixed later. + Message UIDs are now permanently stored outside index files. Deleting indexes is now possible without any kind of data loss and in-memory indexes are now usable. + mbox rewriting leaves extra space into X-Keywords header. It's shrinked or grown when updating message flag headers to avoid rewriting the rest of the file. + imap-login and pop3-login can now be started from inetd. Privilege separation is still used, so it executes dovecot and dovecot-auth processes which are left on the background. + PostgreSQL authentication support, patch by Alex Howansky - Large multiline headers (over 8kB) broke Dovecot before. Now they're parsed one line at a time and we try to avoid reading them fully into memory. - SEARCH OR was broken - Partial BODY[] fetches were broken - Timezones were still set wrong when parsing dates - Using non-synchronized literals (LITERAL+) broke APPEND - Renaming maildir subfolders inserted extra "." in the middle. - Subfolders were a bit broken with maildir - Invalid PLAIN auth request crashed auth process.

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[dovecot] 0.99.9.1 OpenBSD and mbox
by Alvaro Munoz-Aycuens Mtnz. 04 May '03

04 May '03

Hi, compiled perfectly, so the patch of course work ;), but seems that I had the conf a bit broken, because he doesn't read the new messages in /var/mail/user, does the line: #default_mail_env = mbox:~/Mail:INBOX=/var/mail/username look good?, I also tryed with %h instead of username, the rest of the conf is pretty standard, I can create folders and so on. Regards Alvaro

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[dovecot] Problems fetching messages.
by Ian Kumlien 03 May '03

03 May '03

Hi, I have problems reading some mail with the latest version of dovecot. I use maildir etc but it all worked before... It seems like dovecot sends something that throws Evolution off the track since the actual information is sent, but in a broken form it seems. I also get some odd chars (this is raw tcp packet decoding): "ïêa-è "ïêc-è* FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 609 EXISTS * 0 RECENT * OK [UIDVALIDITY 1049995962] UIDs valid * OK [UIDNEXT 1044] Predicted next UID A10891 OK [READ-WRITE] Select completed. "ïêc-î "ïêc-î* 609 FETCH (UID 1043) A10892 OK Fetch completed. "ïêg-î* 498 FETCH (UID 646 BODY[] {3434} eturn-Path: <-----email-------> etc... Any clues? -- Ian Kumlien <pomac(a)vapor.com>

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[dovecot] Corrupted index
by Mark E. Mallett 03 May '03

03 May '03

Hi- Still getting a bunch of these: Apr 30 13:45:23 mercury mem[11056]: pop3(user1): Corrupted index file /users/78/user1/Maildir/.INBOX/.imap.index: used_file_size larger than real file size (4032 vs 1608) and the occasional: Apr 30 13:08:53 mercury mem[13507]: pop3(user2): Corrupted index file (in-memory index for /users/e0/user2/Maildir): Filename mismatch for UID 1: 1051720748.28556.mercury.mv.net vs 1051715695.29601.mercury.mv.net Most of the time (but not always) the .imap* files are relatively old and apparently created by the test5 or older recent release. The errors persist in the logs until I manually remove the .imap* files, which are subsequently recreated upon the next access (without the error being logged, at least not right away). I had the impression that a "Corrupted index file" would cause the index files not to be used, and in fact recreated. Apparently not? If there is an error that causes the .imap* files to be ignored, shouldn't those files be removed? mm

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[dovecot] Message causing pop3 crash
by Mark E. Mallett 03 May '03

03 May '03

Hi- Found a message that will generate a pop3 coredump when using mbox format. It seems to do with the fact that it has a mime part with a line that's 10,000 bytes long. However, that doesn't seem to be the only factor. Adjusting the size of the mail header seems to cause different kinds of crashes. I'll avoid attaching the message here but I've put it at http://www.mv.com/users/mem/x/badmail Reproducing it here on a BSD/OS system involves something like: (login to a virgin account or one you don't care about) % wget http://www.mv.com/users/mem/x/badmail % rm -rf .imap % MAIL=mbox:`pwd`/badmail % limit coredump 10m % /usr/local/libexec/dovecot/pop3 quit at which point you should get some errors and/or a coredump. You may need to do it twice (i.e. let it create the .imap/ index structure first). If you can't make it happen I can send along more info. -mm- (and yes, this was a real mail message, albeit a spam, except that I simplified it some and replaced all of the content with "x" characters)

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[dovecot] Debian packages for 0.99.9
by Jaldhar H. Vyas 30 Apr '03

30 Apr '03

I uploaded the new version to sid today. Apart from the new version a big change is that it has now been split into 4 pieces. dovecot-imapd and dovecot-pop3d are the imap server and the pop3 server rspectively. They are seperate so you can install one without the other. dovecot-common contains the files they both use. dovecot is just a dummy to ensure smooth upgrades for users of older versions. As there are new packages, they will take a while to show up i the archive so I'm temporarily making them available from http://src.braincells.com/debian/sid/dovecot/ or deb http://src.braincells.com/debian sid/ deb-src http://src.braincells.com/debian sid/ via apt-get. but unless you have a burning need to upgrade, I recommend you just wait a few days. A backport to woody is also available, add deb http://src.braincells.com/debian woody/ deb-src http://src.braincells.com/debian woody/ to your sources.list. One problem I found with installing on woody is that the first time you do apt-get install dovecot, it gives you an error because /etc/dovecot.conf is no owned by dovect-common instead of dovecot. It will work correctly the second time you run the command. -- Jaldhar H. Vyas <jaldhar(a)debian.org> La Salle Debain - http://www.braincells.com/debian/

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[dovecot] Dovecot RH RPM packages
by Dag Wieers 29 Apr '03

29 Apr '03

Hi, I can't remember if I already told you, but I'm building RPM packages of dovecot for RH73, RH80 and RH9. You can find these at: http://dag.wieers.com/packages/dovecot/ Or use apt as described on: http://dag.wieers.com/apt/ I also added a sysv file to the SPEC-file for use with Red Hat. If you add this SPEC-file to your tarball (probably with some custom changes) everyone can build an RPM package by issuing: rpmbuild -ta <tarball> Kind regards, -- dag wieers, dag(a)wieers.com, http://dag.wieers.com/ -- �Any errors in spelling, tact or fact are transmission errors�

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[dovecot] current cvs (04.28)
by Farkas Levente 28 Apr '03

28 Apr '03

hi, after the current cvs compile: ----------------------- gcc -DHAVE_CONFIG_H -I. -I. -I../.. -I../../src/lib -I../../src/lib-mail -I../../src/lib-imap -I../../src/lib-storage -O2 -g -pipe -march=i386 -mcpu=i686 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -c `test -f 'mail-storage-callbacks.c' || echo './'`mail-storage-callbacks.c source='main.c' object='main.o' libtool=no \ depfile='.deps/main.Po' tmpdepfile='.deps/main.TPo' \ depmode=gcc3 /bin/sh ../../depcomp \ gcc -DHAVE_CONFIG_H -I. -I. -I../.. -I../../src/lib -I../../src/lib-mail -I../../src/lib-imap -I../../src/lib-storage -O2 -g -pipe -march=i386 -mcpu=i686 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -c `test -f 'main.c' || echo './'`main.c make[3]: *** No rule to make target `../lib-index/libstorage_index.a', needed by `pop3'. Stop. ----------------------- -- Levente "Si vis pacem para bellum!"

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[dovecot] 0.99.9 release candidate 1
by Timo Sirainen 28 Apr '03

28 Apr '03

0.99.9 should really be released soon. There's been quite a lot of important fixes since 0.99.8.1. There's still some recent counter strangeness, but it wasn't perfect before either. mbox still doesn't necessarily notice flag changes unless they're written into index file (ie. non-Dovecots and Dovecot without index files). But it wasn't perfect before either. dovecot-uidlist file works perfectly now as far as I know. I just noticed that mbox syncing has been somewhat broken for past month. It sometimes assigned new UIDs to messages without any reason, so it was mostly just slowdown. So unless there's something really broken, I'll release 0.99.9 tomorrow. Please get 0.99.9-rc1 from http://dovecot.procontrol.fi/rc/ and see if you can break it. NEWS file: v0.99.9 2003-04-28 Timo Sirainen <tss(a)iki.fi> * WARNING: mbox rewriting works now faster, but it's less likely to notice external message flag changes (it wasn't perfect before either). This also means that if you're not using index files, Dovecot may not notice changes made by another process. This will be fixed later. + Message UIDs are now permanently stored outside index files. Deleting indexes is now possible without any kind of data loss and in-memory indexes are now usable. + mbox rewriting leaves extra space into X-Keywords header. It's shrinked or grown when updating message flag headers to avoid rewriting the rest of the file. + imap-login and pop3-login can now be started from inetd. Privilege separation is still used, so it executes dovecot and dovecot-auth processes which are left on the background. + PostgreSQL authentication support, patch by Alex Howansky - Large multiline headers (over 8kB) broke Dovecot before. Now they're parsed one line at a time and we try to avoid reading them fully into memory. - SEARCH OR was broken - Partial BODY[] fetches were broken - Timezones were still set wrong when parsing dates - Using non-synchronized literals (LITERAL+) broke APPEND - Renaming maildir subfolders inserted extra "." in the middle. - Subfolders were a bit broken with maildir - Invalid PLAIN auth request crashed auth process.

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[dovecot] shared folders?
by Moe Wibble 27 Apr '03

27 Apr '03

Any plans to implement shared folders anytime soon? greetinx -- MW

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[dovecot] dovecot and grsecurity (problem with resource limits)
by Heiko Zuerker 27 Apr '03

27 Apr '03

Howdy folks ! I just added Dovecot as a standard package to Devil-Linux and ran into a problem with resource limits. Grsecurity (http://www.grsecurity.net) is used in DL to prevent problems with common exploits, it also reports violations of rlimits. The following messages show up in the log, but it seems that the IMAP Server works fine: Apr 26 19:20:04 src@gate imap-login: Login: hz [192.168.0.11] Apr 26 19:20:05 src@gate kernel: grsec: attempted resource overstep by requesting 37 for RLIMIT_NPROC against limit 0 by (dovecot:10246) UID(0) EUID(0), parent (dovecot:634) UID(0) EUID(0) Apr 26 19:22:18 src@gate kernel: grsec: attempted resource overstep by requesting 37 for RLIMIT_NPROC against limit 0 by (dovecot:19802) UID(0) EUID(0), parent (dovecot:634) UID(0) EUID(0) Apr 26 19:22:18 src@gate imap-login: Login: hz [192.168.0.11] Apr 26 19:26:36 src@gate syslog-ng[606]: STATS: dropped 0 Apr 26 19:28:19 src@gate kernel: grsec: attempted resource overstep by requesting 33 for RLIMIT_NPROC against limit 0 by (dovecot:16011) UID(0) EUID(0), parent (dovecot:634) UID(0) EUID(0) How should we proceed to analyze/fix this problem? Thanks! Heiko

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[dovecot] today cvs
by Farkas Levente 25 Apr '03

25 Apr '03

hi, the today cvs has a new bug during configure (both on rh 8.0 and rh 9): ----------------------------------- checking size of long long... 8 checking type of off_t... long long ./configure: line 12009: syntax error near unexpected token `else' ./configure: line 12009: `else' ----------------------------------- -- Levente "Si vis pacem para bellum!"

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[dovecot] Using on AIX
by Adam Lackorzynski 25 Apr '03

25 Apr '03

Hi, I'm trying to install dovecot-0.99.9-test6 with gcc-3.2.2 under AIX (4.3.3) and found some problems. First, I need to define _XOPEN_SOURCE_EXTENDED to 1 in src/lib/fdpass.c and src/auth/mycrypt.c or undefine it to compile successfully. When I define _XOPEN_SOURCE_EXTENDED to 1, I get the following error while connecting: dovecot: Apr 21 17:56:44 Info: Dovecot starting up imap-login: Apr 21 17:57:19 Fatal: fd_send(5) failed: Bad file number dovecot: Apr 21 17:57:19 Error: child 39504 (login) returned error 89 This happens after a successful authentication (i.e. wrong authentications are correctly denied). Something similar happens if I define _XOPEN_SOURCE to 500 in both files. When I undefine the _XOPEN_SOURCE_EXTENDEDs without modifying the original _XOPEN_SOURCE defines, it seems to come further: imap-login: Apr 21 18:24:23 Info: Login: xxx [xxx.xxx.xxx.xxx] imap(xxx): Apr 21 18:24:23 Panic: file mail-index-data.c: line 439 (mail_index_data_append): assertion failed: ((size & (MEM_ALIGN_SIZE-1)) == 0) dovecot: Apr 21 18:24:23 Error: child 95800 (imap) killed with signal 6 but this doesn't work either. Anything other I could try? Thanks, Adam -- Adam adam(a)os.inf.tu-dresden.de Lackorzynski http://os.inf.tu-dresden.de/~adam/

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[dovecot] index files
by Farkas Levente 23 Apr '03

23 Apr '03

hi, what's happend if I change the index type ie. change it back to the default # mail_cache_fields while before I use mail_cache_fields = and restart dovecot? in this case at the next login the index files are regenerated? -- Levente "Si vis pacem para bellum!"

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[dovecot] errors
by Farkas Levente 23 Apr '03

23 Apr '03

hi, in the yesterday cvs, an internal error in the imap message appear in the client side and in the maillog: ------------------------- Apr 16 10:01:42 red imap(zgabor): Corrupted index file /home/zgabor/Maildir/.Lists.Bugtraq/.imap.index: Invalid seen messages count (284 < 285) Apr 16 10:01:43 red imap(zgabor): Corrupted index file /home/zgabor/Maildir/.Lists.Linux/.imap.index: Invalid seen messages count (191 < 192) Apr 16 10:01:44 red imap(zgabor): Corrupted index file (in-memory index for /home/zgabor/Maildir/.Lists.Linux): Filename mismatch for UID 1: 1050448183.2238_1.red.int.bppiac.hu vs 1050321835.21498_1.red.int.bppiac.hu ------------------------- and this version is _very_ slow!!! -- Levente "Si vis pacem para bellum!"

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[dovecot] quotas again
by Mark E. Mallett 21 Apr '03

21 Apr '03

A couple of notes about quotas-- I know this has been brought up before but the negative effects that occur when a user is over quota are still disconcerting. Ideally it would be best if a user could at least delete mail when in an over-quota condition. One would think it would be enough to simply ignore errors creating the index files (and use an in-memory index). However, another problem is that the mere renaming of a file from the new/ directory to the cur/ directory can cause an over-quota error if the cur/ directory has to be expanded. We see these errors in the maillog followed by an "I/O leak" message, e.g.: Apr 21 07:42:26 mercury mem[10059]: pop3(someuser): maildir build: rename(/users/3a/someuser/Maildir/new/1049919998.23875.mercury.mv.net, /users/3a/someuser/Maildir/cur/1049919998.23875.mercury.mv.net) failed: Disc quota exceeded Apr 21 07:42:26 mercury mem[10059]: pop3(someuser): I/O leak: 0x807361c (1) Apr 21 07:42:26 mercury mem[10059]: pop3(someuser): I/O leak: 0x804a1b8 (0) and then we get a report about the server dropping the connection. BTW we seem to see quite a lot of these "I/O leak" messages in other situations too, and I think it started with the test5 release (but I am not absolutely sure). What does this mean? Yours, mm

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[dovecot] 0.99.9-test6
by Timo Sirainen 21 Apr '03

21 Apr '03

Just two fixes: - dovecot-uidlist file is now assumed to be changed if it's modify time is changed. before we relied on inode changing which isn't fully reliable. - mbox dotlocks sometimes incorrectly thought someone else had overridden them Known problems that I should fix: - mbox: we don't necessarily notice message flag changes by external programs (or another dovecot without index files). It's because we don't always reparse the whole mbox file when it has changed. I think I'll have to add some X-IMAP-Changelog header which describes what changes were made by other Dovecot processes. If the change isn't listed in that header, we'll fallback to reparsing the whole file. Although that's still a bit annoying since MTA just appends the new mails, we wouldn't really need to reparse the whole file then, just the new mails. - I should use link() instead of relying on O_EXCL which doesn't work with NFSv2 (or Linux's NFSv3 client). - .subscriptions and .customflags files still aren't NFS-safe

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[dovecot] Folders with mail and subfolders
by Keith Edmunds 21 Apr '03

21 Apr '03

I have a maildir hierarchy (built originally with Courier-IMAP) where some folders contain both email and subfolders. Using Dovecot I cannot see the mail in the top folders: I can only see the subfolders. Is this an RFC restriction or a Dovecot restriction? If the latter, is it planned to change? Otherwise: just started using Dovecot, and I'm very impressed with the speed of it. Thanks! Keith

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[dovecot] 0.99.9-test5
by Timo Sirainen 21 Apr '03

21 Apr '03

- Fixed startup crashing in POP3 server - Several fixes to opening index file which needs to be rebuilt. Before it didn't always rebuild the index but just fallbacked to using only memory, and that could have been quite slow since all mails in the mailbox were opened and parsed. - If there's nothing in mail_cache_fields, index rebuilding doesn't open the file anymore. This should make in-memory indexes a lot faster than before, but it could also mean some performance hits later. If client wants to fetch all mails from the mailbox, the same thing has to be done anyway.. This needs more thinking actually what is the optimal behaviour. - Support /etc/shadow-like file for passdb.

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[dovecot] Message with lots of attachments breaks Dovecot
by Tim Hunt 21 Apr '03

21 Apr '03

I have a message with over a 1000 embedded attachments(!), and it breaks Dovecot. The issue appears to be buffer management. There is some logic in the function message_part_deserialize_part that seems to assume that the message part structure is in a contiguous array, but that doesn't seem to be the case. I haven't been able to figure out enough about the memory management in Dovecot to fix the problem. Below is a horrible workaround that just allocates a lot more memory for the message part array, so that it remains contiguous. *** mail-index-update.c.orig Wed Mar 26 10:41:55 2003 --- mail-index-update.c Sun Apr 20 16:53:45 2003 *************** *** 498,504 **** if (cache_fields & DATA_FIELD_MESSAGEPART) { t_push(); ! buf = buffer_create_dynamic(data_stack_pool, 2048, (size_t)-1); message_part_serialize(part, buf); --- 498,504 ---- if (cache_fields & DATA_FIELD_MESSAGEPART) { t_push(); ! buf = buffer_create_dynamic(data_stack_pool, 51200, (size_t)-1); message_part_serialize(part, buf);

2 1

[dovecot] Patch for zero content-length
by Tim Hunt 21 Apr '03

21 Apr '03

mbox-index.c uses a zero content length as a flag for an invalid Content-Length: header. Unfortunately zero is also a valid value for Content-Length. The patch below attempts to address the problem. *** mbox-index.h.orig Tue Apr 15 09:04:02 2003 --- mbox-index.h Sun Apr 20 11:42:12 2003 *************** *** 19,24 **** --- 19,25 ---- struct istream *input; uoff_t content_length; int set_read_limit; + unsigned int content_length_good:1; }; int mbox_set_syscall_error(struct mail_index *index, const char *function); *** mbox-index.c.orig Mon Mar 24 05:52:44 2003 --- mbox-index.c Sun Apr 20 12:41:16 2003 *************** *** 264,277 **** start_offset = ctx->input->v_offset; i_stream_set_read_limit(ctx->input, 0); ! end_offset = start_offset + ctx->content_length; ! if (ctx->content_length == 0 || !mbox_verify_end_of_body(ctx->input, end_offset)) { ! if (ctx->content_length != 0) i_stream_seek(ctx->input, start_offset); mbox_skip_message(ctx->input); end_offset = ctx->input->v_offset; ctx->content_length = end_offset - start_offset; } i_stream_seek(ctx->input, start_offset); --- 264,280 ---- start_offset = ctx->input->v_offset; i_stream_set_read_limit(ctx->input, 0); ! end_offset = start_offset; ! if ( ctx->content_length_good ) ! end_offset += ctx->content_length; ! if (!ctx->content_length_good || !mbox_verify_end_of_body(ctx->input, end_offset)) { ! if (ctx->content_length_good ) i_stream_seek(ctx->input, start_offset); mbox_skip_message(ctx->input); end_offset = ctx->input->v_offset; ctx->content_length = end_offset - start_offset; + ctx->content_length_good = TRUE; } i_stream_seek(ctx->input, start_offset); *************** *** 301,311 **** --- 304,316 ---- strcasecmp(hdr->name, "Content-Length") == 0) { /* manual parsing, so we can deal with uoff_t */ ctx->content_length = 0; + ctx->content_length_good = TRUE; for (i = 0; i < hdr->value_len; i++) { if (hdr->value[i] < '0' || hdr->value[i] > '9') { /* invalid */ ctx->content_length = 0; + ctx->content_length_good = FALSE; break; }

1 0

[dovecot] a few small bug
by Farkas Levente 18 Apr '03

18 Apr '03

during the ./autogen.sh there is a few problem: ----------------------------------------- configure.in: installing `./install-sh' configure.in: installing `./mkinstalldirs' configure.in: installing `./missing' Use of uninitialized value in concatenation (.) or string at /usr/bin/automake line 8449. : installing `./config.guess' Use of uninitialized value in concatenation (.) or string at /usr/bin/automake line 8449. : installing `./config.sub' configure.in:3: required file `./config.h.in' not found aclocal.m4:916: required file `./ltmain.sh' not found src/auth/Makefile.am: installing `./depcomp' configure.in:13: warning: AC_ARG_PROGRAM invoked multiple times autoheader: `config.h.in' is created ----------------------------------------- would it be possible to not use your own libtool in the cvs? in this case I can run autogen.sh during the rpm build and doesn't have to run manulay and patch the genereated makefile. ps. this is the patch I use: --- dovecot-1.0/configure.lfarkas 2003-03-20 15:53:04.000000000 +0100 +++ dovecot-1.0/configure 2003-03-20 15:54:37.000000000 +0100 @@ -8205,7 +8205,7 @@ LIBTOOL_DEPS="$ac_aux_dir/ltmain.sh" # Always use our own libtool. -LIBTOOL='$(SHELL) $(top_builddir)/libtool' +LIBTOOL='$(SHELL) libtool' # Prevent multiple expansion -- Levente "Si vis pacem para bellum!"

2 3

[dovecot] Corrupt mbox handling
by Kristian Hoffmann 17 Apr '03

17 Apr '03

I've found that if an mbox file has two consecutive 'From' delimiters, I get the error: pop3(user): Error indexing mbox file /var/spool/mail/user: LF not found where expected UofW apparently ignores the second 'From' silently. I've been trying to run dovecot in gdb to get more details on exactly what is happening, but I haven't quite mastered the art of attaching to the pop3 process between the login process completing and it exiting. Is there some trick to doing that? If I can't work around it in dovecot, I can just write something in perl to fix all the duplicate 'From' lines. Thanks, Kristian Hoffmann PC-InTOUCH/FireToWire System Administrator khoff(a)pc-intouch.com ---

2 1

[dovecot] Changing hierarchy separator to '/'
by Charlie Brady 17 Apr '03

17 Apr '03

3 4

[dovecot] PATCH Add support for kqueue in ioloop subsystem
by Dominic Marks 16 Apr '03

16 Apr '03

Hey, I noticed that there was an ioloop "module" (if we can call it that) for select and poll and decided to add one for kqueue (aka kevent) BSDs high performance descriptor multiplexing API. I haven't done any of the configure glue stuff but the code is complete and works well. kqueue is available on all recent versions of FreeBSD, NetBSD, OpenBSD and Darwin (and therefore MacOS X). I've tested both pop3 and imap with no problems. To get it working: (bodge method) > tar zxvf dovecot-0.99.8.1.tar.gz > cp ioloop-kevent.c dovecot-0.99.8.1/src/lib/ > cd dovecot-0.99.8.1/ > ./configure > vi config.h 1. replace IOLOOP_POLL (or IOLOOP_SELECT) with IOLOOP_KEVENT > vi src/lib/Makefile 1. find liblib_a_SOURCES add ioloop-kevent.c to it 2. find liblib_a_OBJECTS add ioloop-kevent.$(OBJEXT) to it > make There is a paper on kqueue which includes a performance evaulation here: http://people.freebsd.org/~jlemon/papers/kqueue.pdf Thanks, -- Dominic <dom at cus.org.uk> <d.marks at student.umist.ac.uk>

2 1

[dovecot] current cvs
by Farkas Levente 16 Apr '03

16 Apr '03

hi, so after upgrade to the current cvs all of our problem disappear:-) but we don't have time to test the ssl part... although after I compile and install the new dovecot I stop it I do a -------------------- find /home/*/Maildir -name '.imap*' -exec rm {} \; find /home/*/Maildir -name 'dovecot-uidlist' -exec rm {} \; find /home/*/Maildir -name 'msgid.cache' -exec rm {} \; find /home/*/Maildir -name '.customflags' -exec rm {}\; -------------------- just to be sure that we use a fresh version and no other problem can be caused by the old index or any other cached files. this was a BIG mistake!!! we've got about 300 users and about 100 online at the same time. after a two minutes break (while I reinstall and delete) every user check his mail which casue a load about 90!!! the cpu usage 1-2% but the avarage load was 90 (curently about 0.22)! the reason was IO. we have to stop imap and wait for a while... I don't know the exact reason bu I assume dovecot is regenerate everybody's index a other cache at the same time. is there any way to reduce the possible number of IO load? this would be useful if never happend again!:-) this happend around 4:40. the output of sar -b: -------------------- 03:00:00 PM tps rtps wtps bread/s bwrtn/s 03:10:00 PM 48.18 29.19 18.99 1456.53 771.29 03:20:00 PM 41.66 25.80 15.86 1054.88 830.05 03:30:00 PM 42.64 25.67 16.97 1223.03 759.77 03:40:00 PM 44.98 31.95 13.03 1959.15 467.40 03:50:00 PM 26.68 14.63 12.05 741.48 424.12 04:00:00 PM 25.80 11.70 14.10 516.21 450.04 04:10:00 PM 59.55 34.91 24.64 1755.07 939.11 04:20:00 PM 95.98 61.15 34.83 4453.24 1563.25 04:30:00 PM 95.08 55.45 39.63 2182.22 1591.56 04:40:00 PM 168.85 145.99 22.86 11155.73 1037.25 04:50:00 PM 135.98 106.50 29.48 7908.21 1604.76 05:00:00 PM 125.87 97.65 28.23 5876.03 1060.50 05:10:00 PM 80.83 62.92 17.90 4321.82 590.19 05:20:00 PM 102.04 77.65 24.40 4907.27 1076.92 05:30:00 PM 129.04 106.58 22.46 6387.18 883.13 05:40:00 PM 89.44 73.20 16.24 4905.64 782.94 05:50:00 PM 88.23 73.16 15.06 5539.93 965.34 06:00:00 PM 92.49 72.67 19.81 5486.25 692.18 06:10:00 PM 45.24 32.82 12.42 1711.35 618.31 06:20:00 PM 42.17 28.16 14.01 960.11 622.33 06:30:00 PM 29.90 20.24 9.66 1538.27 376.17 06:40:00 PM 25.89 12.14 13.74 796.73 833.25 06:50:00 PM 20.50 4.98 15.52 264.91 993.62 07:00:00 PM 15.08 7.57 7.52 453.41 282.63 -------------------- the output of sar -d -------------------- 04:10:00 PM dev22-3 0.00 0.00 04:10:00 PM dev33-0 1.76 109.55 04:10:00 PM dev34-0 8.51 919.94 04:20:00 PM dev3-0 8.56 183.93 04:20:00 PM dev22-2 67.62 3798.02 04:20:00 PM dev22-3 0.00 0.00 04:20:00 PM dev33-0 4.80 463.81 04:20:00 PM dev34-0 15.01 1570.73 04:30:00 PM dev3-0 4.40 126.63 04:30:00 PM dev22-2 77.02 2440.08 04:30:00 PM dev22-3 0.00 0.00 04:30:00 PM dev33-0 1.94 124.80 04:30:00 PM dev34-0 11.73 1082.28 04:40:00 PM dev3-0 4.78 124.56 04:40:00 PM dev22-2 137.27 10306.18 04:40:00 PM dev22-3 0.00 0.00 04:40:00 PM dev33-0 13.50 410.44 04:40:00 PM dev34-0 13.29 1351.80 04:50:00 PM dev3-0 6.33 194.27 04:50:00 PM dev22-2 111.50 7961.44 04:50:00 PM dev22-3 0.00 0.00 04:50:00 PM dev33-0 5.64 156.51 -------------------- -- Levente "Si vis pacem para bellum!"

2 5

[dovecot] Shadow password file
by Jaime Medrano 16 Apr '03

16 Apr '03

¿Is there any way to make dovecot to take the passwords from a file with a shadow password format? I've tried with the passwd-file auth plugin, but it complains that users have uid=0 Thanks in advance, Jaime Medrano

2 3

[dovecot] it seems to unusable
by Farkas Levente 16 Apr '03

16 Apr '03

hi, is there any way to turn off the whole indexing stuff? unfortunately the system getting totaly unusable beacuase of the high load and the mail index generation is so slow that every users call the helpdask that his mail is not working (what's more in this case just click on OE again and start another mailer process:-() we've got about 100k mails which is about 10-20GB! -- Levente "Si vis pacem para bellum!"

1 0

[dovecot] pop3 coredump
by Mark E. Mallett 16 Apr '03

16 Apr '03

Hi- I was able to get a coredump out of the new pop3 (from 0.99.9-test4) by attempting to simulate the execution environment and simply running the pop3 program. Running the older pop3 from 0.99.8.1 works fine, repeatedly: % /usr/local/libexec/dovecot/pop3 quit +OK Logging out. However running the new one: % /usr/local/libexec/dovecot/pop3.new pop3(user9): Error: Corrupted index file /users/48/user9/Maildir/.INBOX/.imap.index: index.next_uid (4539) > uidlist.next_uid (4000) Segmentation fault (core dumped) It doesn't always dump core even with this message. The error message is not always the same, but it's usually what's above. Simply repeating the invocation a number of times I also saw: pop3(user9): Error: Corrupted index file (in-memory index for /users/48/user9/Maildir): Filename mismatch for UID 1: 1050440153.17005.mercury.mv.net vs 1050437948.5418.mercury.mv.net Here's some gdb output corresponding to the coredump above. -mm- Script started on Tue Apr 15 16:51:28 2003 % gdb pop3/pop3 pop3.core ... Program terminated with signal 11, Segmentation fault. Reading symbols from /usr/local/lib/libiconv.so.2...done. Reading symbols from /shlib/libgcc.so.1...done. Reading symbols from /shlib/libc.so.2...done. Reading symbols from /shlib/ld-bsdi.so...done. #0 0x0 in ?? () (gdb) bt #0 0x0 in ?? () #1 0x8053439 in index_storage_init (storage=0x808f000, box=0x8080658, index=0x808c200, name=0x807660e "INBOX", readonly=0, fast=0) at index-storage.c:264 #2 0x804b8e0 in maildir_open (storage=0x808f000, name=0x807660e "INBOX", readonly=0, fast=0) at maildir-storage.c:239 #3 0x804ba20 in maildir_open_mailbox (storage=0x808f000, name=0x80765b1 "INBOX", readonly=0, fast=0) at maildir-storage.c:288 #4 0x804b1c7 in main_init () at main.c:98 #5 0x804b269 in main (argc=1, argv=0x8047d3c, envp=0x8047d44) at main.c:132 #6 0x8049cae in __start () (gdb) up 1 #1 0x8053439 in index_storage_init (storage=0x808f000, box=0x8080658, index=0x808c200, name=0x807660e "INBOX", readonly=0, fast=0) at index-storage.c:264 264 storage->callbacks->notify_no(&ibox->box, (gdb) l 259 if (!index->open(index, flags)) 260 break; 261 262 if (INDEX_IS_IN_MEMORY(index) && 263 storage->index_dir != NULL) { 264 storage->callbacks->notify_no(&ibox->box, 265 "Couldn't use index files", 266 storage->callback_context); 267 } 268 } (gdb) p index $1 = (struct mail_index *) 0x808c200 (gdb) p *index $2 = {open = 0x8054590 <maildir_index_open>, free = 0x8054abc <maildir_index_free>, set_lock = 0x805c874 <mail_index_set_lock>, try_lock = 0x805c88c <mail_index_try_lock>, set_lock_notify_callback = 0x805c8a4 <mail_index_set_lock_notify_callback>, rebuild = 0x8054f20 <maildir_index_rebuild>, fsck = 0x805de50 <mail_index_fsck>, sync_and_lock = 0x8055db4 <maildir_index_sync>, get_header = 0x805c928 <mail_index_get_header>, lookup = 0x805c968 <mail_index_lookup>, next = 0x805cac0 <mail_index_next>, lookup_uid_range = 0x805cb48 <mail_index_lookup_uid_range>, lookup_field = 0x805cc58 <mail_index_lookup_field>, lookup_field_raw = 0x805ccac <mail_index_lookup_field_raw>, cache_fields_later = 0x805cd70 <mail_index_cache_fields_later>, open_mail = 0x8054de0 <maildir_open_mail>, get_internal_date = 0x8054afc <maildir_get_internal_date>, expunge = 0x805d078 <mail_index_expunge>, update_flags = 0x8054b6c <maildir_index_update_flags>, append_begin = 0x805d3ec <mail_index_append_begin>, append_end = 0x805d4e4 <mail_index_append_end>, append_abort = 0x805d590 <mail_index_append_abort>, update_begin = 0x805f9b0 <mail_index_update_begin>, update_end = 0x805ff68 <mail_index_update_end>, update_abort = 0x8060050 <mail_index_update_abort>, update_field = 0x806022c <mail_index_update_field>, update_field_raw = 0x806025c <mail_index_update_field_raw>, get_last_error = 0x805d618 <mail_index_get_last_error>, get_last_error_text = 0x805d678 <mail_index_get_last_error_text>, data = 0x80821a0, tree = 0x80900c0, modifylog = 0x808d200, custom_flags = 0x808d100, dir = 0x8090000 "/users/48/user9/Maildir/.INBOX", filepath = 0x8090040 "(in-memory index for /users/48/user9/Maildir)", mailbox_path = 0x8082160 "/users/48/user9/Maildir", custom_flags_dir = 0x0, default_cache_fields = 0, never_cache_fields = 0, indexid = 1050439124, sync_id = 6, excl_lock_counter = 1, mbox_fd = 0, mbox_stream = 0x0, mbox_lock_type = MAIL_LOCK_UNLOCK, mbox_dotlock = { dev = 0, ino = 0, mtime = 0}, mbox_lock_counter = 0, mbox_sync_counter = 0, mbox_size = 0, mbox_dev = 0, mbox_ino = 0, uidlist_dev = 18875392, uidlist_ino = 1835546, maildir_lock_fd = -1, fd = -1, error = 0x0, mmap_base = 0x20073000, mmap_used_length = 264, mmap_full_length = 1608, header = 0x20073000, lock_type = MAIL_LOCK_EXCLUSIVE, file_sync_stamp = 1050438868, first_recent_uid = 1, lock_notify_cb = 0x8053238 <lock_notify>, lock_notify_context = 0x808c400, set_flags = 0, set_cache_fields = 0, anon_mmap = 1, opened = 0, rebuilding = 0, mail_read_mmaped = 0, inconsistent = 0, nodiskspace = 0, index_lock_timeout = 0, allow_new_custom_flags = 0, mailbox_readonly = 0, mailbox_lock_timeout = 0} (gdb) p storage $3 = (struct mail_storage *) 0x808f000 (gdb) p *storage $5 = {name = 0x8076805 "maildir", hierarchy_sep = 46 '.', create = 0x804b2c0 <maildir_create>, free = 0x804b428 <maildir_free>, autodetect = 0x804b480 <maildir_autodetect>, set_callbacks = 0x80535e4 <index_storage_set_callbacks>, open_mailbox = 0x804b940 <maildir_open_mailbox>, create_mailbox = 0x804ba5c <maildir_create_mailbox>, delete_mailbox = 0x804bb08 <maildir_delete_mailbox>, rename_mailbox = 0x804bea4 <maildir_rename_mailbox>, list_mailbox_init = 0x804c624 <maildir_list_mailbox_init>, list_mailbox_deinit = 0x804c800 <maildir_list_mailbox_deinit>, list_mailbox_next = 0x804cc48 <maildir_list_mailbox_next>, set_subscribed = 0x8064594 <subsfile_set_subscribed>, get_mailbox_name_status = 0x804bffc <maildir_get_mailbox_name_status>, get_last_error = 0x805455c <mail_storage_get_last_error>, dir = 0x8082100 "/users/48/user9/Maildir", inbox_file = 0x0, index_dir = 0x8082120 "/users/48/user9/Maildir", user = 0x808e050 "user9", error = 0x0, callbacks = 0x8082140, callback_context = 0x0, syntax_error = 0} (gdb) p ibox $6 = (struct index_mailbox *) 0x808c400 (gdb) p *ibox $7 = {box = {name = 0x808e070 "INBOX", storage = 0x808f000, close = 0x805359c <index_storage_close>, get_status = 0x8052ee4 <index_storage_get_status>, sync = 0x8053b94 <index_storage_sync>, auto_sync = 0x804c0c8 <maildir_storage_auto_sync>, expunge = 0x804fa64 <index_storage_expunge>, update_flags = 0x8053d58 <index_storage_update_flags>, copy = 0x804c3e4 <maildir_storage_copy>, fetch_init = 0x804fb00 <index_storage_fetch_init>, fetch_deinit = 0x804fbe8 <index_storage_fetch_deinit>, fetch_next = 0x804fc70 <index_storage_fetch_next>, fetch_uid = 0x804fd5c <index_storage_fetch_uid>, fetch_seq = 0x804fdc0 <index_storage_fetch_seq>, search_get_sorting = 0x8052af4 <index_storage_search_get_sorting>, search_init = 0x8052b08 <index_storage_search_init>, search_deinit = 0x8052be0 <index_storage_search_deinit>, search_next = 0x8052ca0 <index_storage_search_next>, save_init = 0x804cf4c <maildir_storage_save_init>, save_deinit = 0x804cfe0 <maildir_storage_save_deinit>, save_next = 0x804ce04 <maildir_storage_save_next>, is_inconsistency_error = 0x8054578 <mail_storage_is_inconsistency_error>, readonly = 0, allow_custom_flags = 0, inconsistent = 0}, expunge_locked = 0, index = 0x808c200, autosync_to = 0x0, autosync_files = 0x0, autosync_type = MAILBOX_SYNC_NONE, sync_last_check = 0, min_newmail_notify_interval = 0, fetch_mail = {mail = {seq = 0, uid = 0, seen_updated = 0, get_flags = 0, get_parts = 0, get_received_date = 0, get_date = 0, get_size = 0, get_header = 0, get_address = 0, get_first_mailbox = 0, get_stream = 0, get_special = 0}, data = {flags = { flags = 0, custom_flags = 0x0, custom_flags_count = 0}, received_date = 0, size = 0, sent_time = 0, sent_timezone = 0, headers = 0x0, parts = 0x0, envelope = 0x0, body = 0x0, bodystructure = 0x0, envelope_data = 0x0, rec = 0x0, stream = 0x0, hdr_size = {physical_size = 0, virtual_size = 0, lines = 0}, body_size = { physical_size = 0, virtual_size = 0, lines = 0}, parse_header = 0, save_sent_time = 0, save_envelope = 0, hdr_size_set = 0, body_size_set = 0}, pool = 0x0, ibox = 0x0, header_buf = 0x0, wanted_fields = 0, wanted_headers = 0x0}, synced_messages_count = 0, next_lock_notify = 1050439154, last_notify_type = MAIL_LOCK_NOTIFY_MAILBOX_ABORT, sent_diskspace_warning = 0} (gdb) quit % exit Script done on Tue Apr 15 16:53:06 2003

2 3

[dovecot] PATCH allow_zero_gid option
by Dominic Marks 15 Apr '03

15 Apr '03

Hey, Well, that was easy :-) Patch against CVS follows: Summary: Created a boolean option allow_zero_gid, when set to yes it will allow logins from users whose group id is zero. Tested with KMail 3.1.1 on FreeBSD 4.8. I'm not sure if my method for passing the boolean via the environment is correct, it looks a little on the ugly side. Index: src/lib/restrict-access.c =================================================================== RCS file: /home/cvs/dovecot/src/lib/restrict-access.c,v retrieving revision 1.10 diff -u -3 -p -r1.10 restrict-access.c --- src/lib/restrict-access.c 4 Mar 2003 04:00:13 -0000 1.10 +++ src/lib/restrict-access.c 15 Apr 2003 17:37:26 -0000 @@ -31,12 +31,14 @@ #include <grp.h> void restrict_access_set_env(const char *user, uid_t uid, gid_t gid, - const char *chroot_dir) + const char *chroot_dir, int allow_zg) { if (user != NULL && *user != '\0') env_put(t_strconcat("RESTRICT_USER=", user, NULL)); if (chroot_dir != NULL && *chroot_dir != '\0') env_put(t_strconcat("RESTRICT_CHROOT=", chroot_dir, NULL)); + if (allow_zg == TRUE) + env_put(t_strdup("ALLOW_ZERO_GID=TRUE")); env_put(t_strdup_printf("RESTRICT_SETUID=%s", dec2str(uid))); env_put(t_strdup_printf("RESTRICT_SETGID=%s", dec2str(gid))); @@ -45,6 +47,7 @@ void restrict_access_set_env(const char void restrict_access_by_env(int disallow_root) { const char *env; + int allow_zero_gid; gid_t gid; uid_t uid; @@ -97,8 +100,14 @@ void restrict_access_by_env(int disallow i_fatal("We couldn't drop root privileges"); } - if ((gid != 0 && uid != 0) || disallow_root) { + /* allow users with zero group id permission for BSD */ + env = getenv("ALLOW_ZERO_GID"); + allow_zero_gid = env == NULL ? FALSE : TRUE; + + if (allow_zero_gid == FALSE && + ((gid != 0 && uid != 0) || disallow_root)) { if (getgid() == 0 || getegid() == 0 || setgid(0) == 0) i_fatal("We couldn't drop root group privileges"); } + } Index: src/lib/restrict-access.h =================================================================== RCS file: /home/cvs/dovecot/src/lib/restrict-access.h,v retrieving revision 1.4 diff -u -3 -p -r1.4 restrict-access.h --- src/lib/restrict-access.h 4 Mar 2003 04:00:13 -0000 1.4 +++ src/lib/restrict-access.h 15 Apr 2003 17:37:26 -0000 @@ -4,7 +4,7 @@ /* set environment variables so they can be read with restrict_access_by_env() */ void restrict_access_set_env(const char *user, uid_t uid, gid_t gid, - const char *chroot_dir); + const char *chroot_dir, int allow_zg); /* chroot, setuid() and setgid() based on environment variables. If disallow_roots is TRUE, we'll kill ourself if we didn't have the Index: src/master/auth-process.c =================================================================== RCS file: /home/cvs/dovecot/src/master/auth-process.c,v retrieving revision 1.41 diff -u -3 -p -r1.41 auth-process.c --- src/master/auth-process.c 2 Apr 2003 02:09:41 -0000 1.41 +++ src/master/auth-process.c 15 Apr 2003 17:37:27 -0000 @@ -307,7 +307,7 @@ static pid_t create_auth_process(struct /* setup access environment */ restrict_access_set_env(group->set->user, pwd->pw_uid, pwd->pw_gid, - group->set->chroot); + group->set->chroot, set->allow_zero_gid); /* set other environment */ env_put(t_strconcat("AUTH_PROCESS=", dec2str(getpid()), NULL)); Index: src/master/login-process.c =================================================================== RCS file: /home/cvs/dovecot/src/master/login-process.c,v retrieving revision 1.40 diff -u -3 -p -r1.40 login-process.c --- src/master/login-process.c 15 Apr 2003 16:58:48 -0000 1.40 +++ src/master/login-process.c 15 Apr 2003 17:37:27 -0000 @@ -384,7 +384,8 @@ static void login_process_init_env(struc clean_child_process() since it clears environment */ restrict_access_set_env(group->set->user, group->set->uid, set->login_gid, - set->login_chroot ? set->login_dir : NULL); + set->login_chroot ? set->login_dir : NULL, + set->allow_zero_gid); env_put("DOVECOT_MASTER=1"); Index: src/master/mail-process.c =================================================================== RCS file: /home/cvs/dovecot/src/master/mail-process.c,v retrieving revision 1.13 diff -u -3 -p -r1.13 mail-process.c --- src/master/mail-process.c 15 Apr 2003 16:58:48 -0000 1.13 +++ src/master/mail-process.c 15 Apr 2003 17:37:28 -0000 @@ -25,7 +25,7 @@ static int validate_uid_gid(uid_t uid, g return FALSE; } - if (uid != 0 && gid == 0) { + if (set->allow_zero_gid == FALSE && uid != 0 && gid == 0) { i_error("mail process isn't allowed to be in group 0"); return FALSE; } @@ -38,8 +38,9 @@ static int validate_uid_gid(uid_t uid, g return FALSE; } - if (gid < (gid_t)set->first_valid_gid || - (set->last_valid_gid != 0 && gid > (gid_t)set->last_valid_gid)) { + if (set->allow_zero_gid == FALSE && + (gid < (gid_t)set->first_valid_gid || + (set->last_valid_gid != 0 && gid > (gid_t)set->last_valid_gid))) { i_error("mail process isn't allowed to use " "GID %s (UID is %s)", dec2str(gid), dec2str(uid)); return FALSE; @@ -150,7 +151,8 @@ int create_mail_process(int socket, stru (paranoia about filling up environment without noticing) */ restrict_access_set_env(data + reply->system_user_idx, reply->uid, reply->gid, - reply->chroot ? data + reply->home_idx : NULL); + reply->chroot ? data + reply->home_idx : NULL, + set->allow_zero_gid); restrict_process_size(process_size, (unsigned int)-1); Index: src/master/master-settings.c =================================================================== RCS file: /home/cvs/dovecot/src/master/master-settings.c,v retrieving revision 1.16 diff -u -3 -p -r1.16 master-settings.c --- src/master/master-settings.c 2 Apr 2003 02:09:41 -0000 1.16 +++ src/master/master-settings.c 15 Apr 2003 17:37:28 -0000 @@ -46,6 +46,7 @@ static struct setting_def setting_defs[] DEF(SET_INT, max_mail_processes), DEF(SET_BOOL, verbose_proctitle), + DEF(SET_BOOL, allow_zero_gid), DEF(SET_INT, first_valid_uid), DEF(SET_INT, last_valid_uid), DEF(SET_INT, first_valid_gid), @@ -153,6 +154,7 @@ struct settings default_settings = { MEMBER(max_mail_processes) 1024, MEMBER(verbose_proctitle) FALSE, + MEMBER(allow_zero_gid) FALSE, MEMBER(first_valid_uid) 500, MEMBER(last_valid_uid) 0, MEMBER(first_valid_gid) 1, Index: src/master/master-settings.h =================================================================== RCS file: /home/cvs/dovecot/src/master/master-settings.h,v retrieving revision 1.10 diff -u -3 -p -r1.10 master-settings.h --- src/master/master-settings.h 2 Apr 2003 02:09:41 -0000 1.10 +++ src/master/master-settings.h 15 Apr 2003 17:37:29 -0000 @@ -32,6 +32,7 @@ struct settings { unsigned int max_mail_processes; int verbose_proctitle; + int allow_zero_gid; unsigned int first_valid_uid, last_valid_uid; unsigned int first_valid_gid, last_valid_gid; Thanks, -- Dominic <dom at cus.org.uk> <d.marks at student.umist.ac.uk>

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[dovecot] 0.99.9-test4
by Timo Sirainen 15 Apr '03

15 Apr '03

http://procontrol.fi/test/ - Crashfix for multipart messages - More optimized mbox rewriting, should be "good enough" for most uses I think. I've been using it for a while now, seems to work. Still some problems: imap(cras): Apr 15 01:48:48 Warning: Our dotlock file /home/cras/mail//full-disclosure.lock was overridden And I'm sure it wasn't. Or at least shouldn't have been. Have to look more into this..

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[dovecot] Group ID validation and FreeBSD
by Dominic Marks 15 Apr '03

15 Apr '03

Hey, I've been working on making the Dovecot FreeBSD port resemble something which actually works this weekend, it's now much improved - one thing that I did notice is that Dovecot validates a users GID and will not accept a group id of 0. In FreeBSD the group wheel has a the id 0 and only members of the wheel group are allowed to use su and become root. Consequently there are non-root users who have group id's of 0. When you try and open the mailbox of such a user with Dovecot the connection is killed immediately. It would be excellent to have an option in dovecot.conf along the lines of allow_zero_gid which would disable these checks. From a quick look at the source I can see that the validation is being done in src/master/mail-process.c and that src/lib/restrict-access.c is also involved. If I can get a working patch ready quickly I'll pass it along. If anyone would like to take a look at the port you can get a copy at the following address: http://cus.org.uk/~dom/dovecot-0.99.8.1.shar.gz Hopefully this will go into FreeBSD CVS quite soon. Thanks, -- Dominic <dom at cus.org.uk> <d.marks at student.umist.ac.uk>

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[dovecot] 0.99.9-test3
by Timo Sirainen 15 Apr '03

15 Apr '03

Expunging messages caused those "Corrupted index file" errors. That's fixed now. There's probably still some problems, at least this fix didn't fix any crashes.. test3 available from http://dovecot.procontrol.fi/test/

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[dovecot] a crashy message
by Moe Wibble 15 Apr '03

15 Apr '03

Hi everyone, the attached message does reliably crash my dovecot when trying to access a folder containing it. Crash notice in mail.log: Apr 13 17:36:12 rafter dovecot: child 23215 (imap) killed with signal 11 My `dovecot --version` says: 0.99.8 Has this problem been fixed in current dovecot? For now I have just quarantined the offending message but obviously I need to upgrade my dovecot soon because I don't like such kinda things to happen. best regards! -- MW

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[dovecot] Three *very* strange bugs
by Warren Togami 15 Apr '03

15 Apr '03

* Attached is a mbox file that triggers Bug #1 and #2. * Go here if you want to test dovecot for RH9: https://bugzilla.fedora.us/show_bug.cgi?id=160 * If somebody has a different IMAP server than dovecot, could you please test how Evolution reacts to reading this message? Bug #1 dovecot and #2 evolution-1.2.3 ===================================== I am using dovecot-0.99.9-test3 on RH9, reading mail with evolution-1.2.2-5 on RH9. Whenever I attempt to view this one particular spam message, evolution pops up an error like: Error while 'Retrieving message 4': Server unexpectedly disconnected: No such file or directory Simultaneously this appears in my /var/log/maillog: Apr 15 01:44:50 server dovecot: child 20328 (imap) killed with signal 11 If I attempt to keep reading mail, it logs in again to dovecot and works normally until I attempt to read that spam again. Evolution displays the error popup again though I don't see another signal 11 in maillog. After this point I am unable to log back into dovecot without restarting the daemon. Here's the strange part... I browsed the same IMAP folder from KMail, and kmail has no problem reading that spam message. dovecot's [imap] process does not segmentation fault. Does this mean an evolution bug when reading this particular spam exposed a dovecot segmentation fault? Bug #3 kernel? ============== This is an unrelated bug and perhaps not the fault of dovecot. When I attempted to use strace to get some debugging info on the [imap] process, this happened: [root@server /]# strace -p 20486 trace: ptrace(PTRACE_SYSCALL, ...): Operation not permitted detach: ptrace(PTRACE_DETACH, ...): Operation not permitted [root@server /]# This isn't normal right? After doing this, dovecot stops working and I need to restart the daemon in order to establish new connections. That [imap] process becomes unkillable, even kill -9 wont work. Unkillable process usually means kernel bug, right? warren 20345 1 7 01:46 ? 00:00:34 [imap] This is kernel-2.4.20-9 in Red Hat Linux 9. Is dovecot exposing a Red Hat kernel bug when I try to strace that process, or is strace supposed to fail, the dovecot daemon ceases to function and [imap] process becomes completely unkillable? =) Warren Togami warren(a)togami.com

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DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA
by Mail System Internal Data 15 Apr '03

15 Apr '03

This text is part of the internal format of your mail folder, and is not a real message. It is created automatically by the mail system software. If deleted, important folder data will be lost, and it will be re-created with the data reset to initial values.

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The Discover(r) Platinum Wildlife Card - Go Wild
by Wild Life 15 Apr '03

15 Apr '03

Offer Expires April 30, 2003 X-Rcpt-To: <warren(a)togami.com> Get a 0% Intro APR* on Purchases and Balance Transfers Youve been selected for a special No-Annual-Fee Discover® Card with all of these privileges: · 0% Intro APR on Purchases and Balance Transfers* · No Annual Fee · Up to 2% Cashback Bonus® award* · Up to $50,000 Credit Limit Start Saving Today APPLY NOW! It's fast, easy and secure. http://ileadmarketing.com/mkt/lead?&l=56217&a=16cc7b&z=57366 To take advantage of this special offer, act by April 30, 2003! * Click here to see information about the APR, fees and other Important Information .................................................................... ILeadMarketing never sends unsolicited email. ILeadMarketing has been given the right to market to you through our Web site partners and their privacy policies. Specifically, you are receiving this correspondence because you have provided consent (via your registration and acceptance of the privacy policies for a newsletter, contest, web-based service or other activity on the web) to receive recurring promotions or offers from various third parties. If you feel that you are receiving this email in error or are not interested in receiving future offers please click here: http://www.ileadmarketing.com/mkt/seeya?email=warren@togami.com&c=57366 , or email us at seeya(a)ileadmarketing.com. ILeadMarketing is not responsible for third party offers, services or products and makes no representations or warranties regarding them. ..................................................................... --=-1kN4J0lqIIqLcGMke0AY--

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[dovecot] dovecot RPM for Red Hat Linux
by Warren Togami 14 Apr '03

14 Apr '03

http://bugzilla.fedora.us/show_bug.cgi?id=160 This .src.rpm is dovecot with RH-specific default settings. I modified Jeremy Katz' dovecot-0.99.8.1 package a bit. When I upgraded from 0.99.8.1 it seemed to be broken until I looked at /var/log/maillog. There it indicated that the dovecot cache files were bad, so I erased /home/*/mail/.imap/ and it seemed to work subsequently. There are a few more RH specific tweaks that I plan on doing for this package. If you have any suggestions to default config tweaks for this package please reply or post in that bugzilla entry above. I would like for this package to be a drop-in replacement for RHL's uw-imapd eventually, but there are a number of migration issues that need to be addressed first. This package will eventually be included in the Fedora tree after it goes through our QA. http://www.fedora.us Fedora Linux is a project of volunteer package developers making 3rd party packages specifically for Red Hat Linux. Warren Togami warren(a)togami.com p.s. Keep up the good work. I absolutely love dovecot!

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[dovecot] Something wrong in SSL ?
by Juha Ylitalo 14 Apr '03

14 Apr '03

Operating system: FreeBSD 4.7-RELEASE-p10 Dovecot: 0.99.8.1 I've used openssl to generate personal CA and I've used that one to generate certificate for my web server. When I tried to go through same pattern for generating certificate for IMAP server from CA, I ended up in situation, where both mutt and evolution keep on rejecting my certificates.

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[Daniel Silverstone <dsilvers@digital-scurf.org>] Re: lua 5.0
by Per Olofsson 13 Apr '03

13 Apr '03

FYI. /Pelle

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[dovecot] Maildir problem?
by Maikel Verheijen 11 Apr '03

11 Apr '03

Hey list, Today I cvs updated to the most recent dovecot, to test with the recent improvements on the dovecot-uidlist file, and came acros the following: Apr 11 12:49:36 pc-5-046 imap(): Corrupted index file (in-memory index for /var/mail/mounted/test.com/maikel/Maildir//.Sent Items): Filename mismatch for UID 1: 1050058115.P3401Q0M675362.pc-5-046.test.nl:2,S vs 1050057888.P3371Q0M138398.pc-5-046.test.nl I am using a front-end back-end construction, But I am testing on the backend only (non-nfs), because the subscriptions file isn't nfs safe yet. shouldn't the uidl files be leading over the indexes? And shouldn't the indexes be updated as well? Thank you, Maikel Verheijen.

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[dovecot] Maildir syncing rewrite
by Timo Sirainen 11 Apr '03

11 Apr '03

It finally seems to be working. I've done some testing now and it seems to be working fine. If you have time, see if you can get it to break (especially with INDEX=memory or by manually modifying the maildir). The UIDs are kept in Courier-compatible dovecot-uidlist file (so "mv courierimapuiddb dovecot-uidlist" should work). The great thing about this code is that we never wait for lock. If we can't lock, we simply use the old uidlist file to sync whatever we can, which should be everything but the very newest mails just being delivered and processed by another Dovecot. Of course, if they share index files, we're still blocking there. I named the file as "dovecot-uidlist" instead of ".uidlist" because I finally realized that files beginning with dot conflict with the mailbox namespace. I should rename .customflags and .subscriptions files as well. Also if I move .imap.index* files into root dir, I'll have to rename them too. new/ directory is now scanned every time to see if there's new mail. cur/ directory is scanned if index file's timestamp differs from cur/ dir's timestamp. uidlist file is reread if it's device/inode changes. You can get the sources from either CVS, or 0.99.9-test2 from http://dovecot.procontrol.fi/test/

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[dovecot] dovecot-0.99.9-test2 probs
by Mark E. Mallett 11 Apr '03

11 Apr '03

Hi- Tried 0.99.9-test2 -- had to go back. Various problems in the log. Here's one: Apr 10 08:56:25 mercury mem[10754]: imap(user0): msync() failed with index data file /users/8b/user0/Maildir/.INBOX/.imap.index.data: Cannot allocate memory Apr 10 08:56:25 mercury mem[10754]: imap(user0): Corrupted index data file /users/8b/user0/Maildir/.INBOX/.imap.index.data: Missing location field for record 156 Apr 10 08:56:25 mercury mem[10754]: imap(user0): msync() failed with index data file /users/8b/user0/Maildir/.INBOX/.imap.index.data: Cannot allocate memory Here's another: Apr 10 18:56:59 mercury mem[13376]: pop3(user1): Corrupted index file /users/30/user1/Maildir/.INBOX/.imap.index: index.next_uid (2365) > uidlist.next_uid (2364) And another: Apr 10 19:09:24 mercury mem[10892]: pop3(user2): Corrupted index file /users/39/user2/Maildir/.INBOX/.imap.index: index.next_uid (10422) > uidlist.next_uid (10420) Apr 10 19:09:24 mercury mem[10892]: pop3(user2): Corrupted index file (in-memory index for /users/39/user2/Maildir): Filename mismatch for UID 1: 1050015983.28176.mercury.mv.net vs 1046192106.460.mercury.mv.net Apr 10 19:09:24 mercury mem[10892]: pop3(user2): No INBOX for user And a ton of these, without any other entry for the process ID (which I assume is the number after "child"): Apr 10 19:09:33 mercury dovecot: child 1645 (imap) killed with signal 11

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