- dovecot - dovecot.org

[dovecot] 0.99.9 release candidate 1
by Timo Sirainen 27 Apr '03

27 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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