- dovecot - dovecot.org

Re: Panic-Error (ctx->nested_parts_count > 0)
by Aki Tuomi 04 Nov '20

04 Nov '20

You should be able to workaround this by enabling fts. Aki > On 04/11/2020 09:22 Andreas Piper <piper(a)hrz.uni-marburg.de> wrote: > > > Hello, > > on my dovecot-replicator-backend I see lots of panic-messages "assertion > failed: (ctx->nested_parts_count > 0)", produced from a single user. I > assume that this is correlated with > https://github.com/dovecot/core/commit/a668d767a710ca18ab6e7177d8e8be22a6b0… > > How can I identify the incorrect formatted message in the user's > mailbox? I want to remove it, as the error-processes drive up the > backend's load incredibly. > > Will a fixed dovecot-package be out soon? > > Any help is appreciated. > > Best regards, > Andreas > > My system-data: > # 2.3.11.3 (502c39af9): /etc/dovecot/dovecot.conf > # Pigeonhole version 0.5.11 (6c69c917) > # OS: Linux 4.15.0-122-generic x86_64 Ubuntu 18.04.5 LTS > > An example error-message: > > Nov 04 08:04:25 vhrz311 dovecot[6163]: > imap(xxx(a)staff.uni-marburg.de)<63176><ad/jlkKzSs2sGQEp>: Panic: file > message-parser.c: line 174 (message_part_finish): assertion failed: > (ctx->nested_parts_count > 0) > Nov 04 08:04:25 vhrz311 dovecot[6163]: > imap(xxx(a)staff.uni-marburg.de)<63173><ORvjlkKzRs2sGQEp>: Fatal: master: > service(imap): child 63173 killed with signal 6 (core dumps disabled - > https://dovecot.org/bugreport.html#coredumps) > Nov 04 08:04:25 vhrz311 dovecot[6163]: > imap(xxx(a)staff.uni-marburg.de)<63176><ad/jlkKzSs2sGQEp>: Error: Raw > backtrace: /usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x42) > [0x7f1dd28d6d22] -> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x1e) > [0x7f1dd28d6e3e] -> /usr/lib/dovecot/libdovecot.so.0(+0xed75e) > [0x7f1dd28e175e] -> /usr/lib/dovecot/libdovecot.so.0(+0xed801) > [0x7f1dd28e1801] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) > [0x7f1dd2836beb] -> /usr/lib/dovecot/libdovecot.so.0(+0xcd40e) > [0x7f1dd28c140e] -> > /usr/lib/dovecot/libdovecot.so.0(message_parser_parse_next_block+0x15c) > [0x7f1dd28c2b2c] -> > /usr/lib/dovecot/libdovecot.so.0(message_search_msg+0xa0) > [0x7f1dd28c52a0] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xc8f9e) > [0x7f1dd2c67f9e] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mail_search_args_foreach+0x45) > [0x7f1dd2be31e5] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xca111) > [0x7f1dd2c69111] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xcb214) > [0x7f1dd2c6a214] -> > /usr/lib/dovecot/libdovecot-storage.so.0(index_storage_search_next_nonblock+0x10d) > [0x7f1dd2c6a9ed] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_search_next_nonblock+0x22) > [0x7f1dd2becdf2] -> dovecot/imap(+0x25eb1) [0x561689529eb1] -> > dovecot/imap(command_exec+0x64) [0x561689522bc4] -> > dovecot/imap(+0x25592) [0x561689529592] -> > /usr/lib/dovecot/libdovecot.so.0(io_loop_handle_timeouts+0x12f) > [0x7f1dd28fa3ff] -> > /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xbe) > [0x7f1dd28fbebe] -> > /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x4c) > [0x7f1dd28fa75c] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) > [0x7f1dd28fa988] -> > /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) > [0x7f1dd2867c23] -> dovecot/imap(main+0x339) [0x561689512d19] -> > /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f1dd2424bf7] > -> dovecot/imap(_start+0x2a) [0x561689512f2a]

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Panic-Error (ctx->nested_parts_count > 0)
by Andreas Piper 04 Nov '20

04 Nov '20

Hello, on my dovecot-replicator-backend I see lots of panic-messages "assertion failed: (ctx->nested_parts_count > 0)", produced from a single user. I assume that this is correlated with https://github.com/dovecot/core/commit/a668d767a710ca18ab6e7177d8e8be22a6b0… How can I identify the incorrect formatted message in the user's mailbox? I want to remove it, as the error-processes drive up the backend's load incredibly. Will a fixed dovecot-package be out soon? Any help is appreciated. Best regards, Andreas My system-data: # 2.3.11.3 (502c39af9): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.11 (6c69c917) # OS: Linux 4.15.0-122-generic x86_64 Ubuntu 18.04.5 LTS An example error-message: Nov 04 08:04:25 vhrz311 dovecot[6163]: imap(xxx(a)staff.uni-marburg.de)<63176><ad/jlkKzSs2sGQEp>: Panic: file message-parser.c: line 174 (message_part_finish): assertion failed: (ctx->nested_parts_count > 0) Nov 04 08:04:25 vhrz311 dovecot[6163]: imap(xxx(a)staff.uni-marburg.de)<63173><ORvjlkKzRs2sGQEp>: Fatal: master: service(imap): child 63173 killed with signal 6 (core dumps disabled - https://dovecot.org/bugreport.html#coredumps) Nov 04 08:04:25 vhrz311 dovecot[6163]: imap(xxx(a)staff.uni-marburg.de)<63176><ad/jlkKzSs2sGQEp>: Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x42) [0x7f1dd28d6d22] -> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7f1dd28d6e3e] -> /usr/lib/dovecot/libdovecot.so.0(+0xed75e) [0x7f1dd28e175e] -> /usr/lib/dovecot/libdovecot.so.0(+0xed801) [0x7f1dd28e1801] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f1dd2836beb] -> /usr/lib/dovecot/libdovecot.so.0(+0xcd40e) [0x7f1dd28c140e] -> /usr/lib/dovecot/libdovecot.so.0(message_parser_parse_next_block+0x15c) [0x7f1dd28c2b2c] -> /usr/lib/dovecot/libdovecot.so.0(message_search_msg+0xa0) [0x7f1dd28c52a0] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xc8f9e) [0x7f1dd2c67f9e] -> /usr/lib/dovecot/libdovecot-storage.so.0(mail_search_args_foreach+0x45) [0x7f1dd2be31e5] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xca111) [0x7f1dd2c69111] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xcb214) [0x7f1dd2c6a214] -> /usr/lib/dovecot/libdovecot-storage.so.0(index_storage_search_next_nonblock+0x10d) [0x7f1dd2c6a9ed] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_search_next_nonblock+0x22) [0x7f1dd2becdf2] -> dovecot/imap(+0x25eb1) [0x561689529eb1] -> dovecot/imap(command_exec+0x64) [0x561689522bc4] -> dovecot/imap(+0x25592) [0x561689529592] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handle_timeouts+0x12f) [0x7f1dd28fa3ff] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xbe) [0x7f1dd28fbebe] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x4c) [0x7f1dd28fa75c] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f1dd28fa988] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f1dd2867c23] -> dovecot/imap(main+0x339) [0x561689512d19] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f1dd2424bf7] -> dovecot/imap(_start+0x2a) [0x561689512f2a]

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Re: vsz_limit
by Aki Tuomi 04 Nov '20

04 Nov '20

> On 04/11/2020 05:19 Joan Moreau <jom(a)grosjo.net> wrote: > > > Hello > I am looking for help around memory management > 1 - How to get the current value of "vsz_limit" from inside a plugin (namely https://github.com/grosjo/fts-xapian/ ) , especially for indexer-worker > 2 - Is there a macro or function in dovecot to get the remaining free memory from this vsz value ? > Thank you > > Hi Joan, I don't think there is a feasible way to access this setting as of now. Is there a reason you need this? We usually recommend setting vsz_limit=0 for indexer-worker. Aki

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Re: vsz_limit
by Aki Tuomi 04 Nov '20

04 Nov '20

> On 04/11/2020 05:19 Joan Moreau <jom(a)grosjo.net> wrote: > > > Hello > I am looking for help around memory management > 1 - How to get the current value of "vsz_limit" from inside a plugin (namely https://github.com/grosjo/fts-xapian/ ) , especially for indexer-worker > 2 - Is there a macro or function in dovecot to get the remaining free memory from this vsz value ? > Thank you > >

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vsz_limit
by Joan Moreau 04 Nov '20

04 Nov '20

Hello I am looking for help around memory management 1 - How to get the current value of "vsz_limit" from inside a plugin (namely https://github.com/grosjo/fts-xapian/ ) , especially for indexer-worker 2 - Is there a macro or function in dovecot to get the remaining free memory from this vsz value ? Thank you

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Feature Request: Redis support for username and TLS
by Mark Moseley 04 Nov '20

04 Nov '20

I was wondering if there was any imminent support in 2.3.12+ for using a username to log into Redis, as well as support for using TLS to connect to Redis. And if not, I'd like to put in a feature request for those two things (AUTH with username/password, and TLS connections to Redis). Specifically, I was looking at using a username/password combo to log into Redis for the quota_clone plugin. I found the 'password' param in the source (not documented at https://wiki.dovecot.org/Dictionary) There's no 'username' param (the 'username' in the source seems to refer to the mailbox, for the purpose of building the key name). Redis 6 supports authenticating with a username and password, as well as the ability to listen on a TLS-enabled port. Both of these significantly improve security, combined with the new ACL system. Obviously, these Redis 6 features are brand new, so I'd be shocked if they were already supported. But it'd be awesome if those were added to Dovecot :) Currently, I've got a localhost Envoy proxy doing TCP proxying from localhost+non-TLS to my Redis TLS port, which is a kludge at best. There's a neat Envoy Redis proxy that *almost* does the trick but the Envoy Redis proxy unfortunately doesn't support MULTI/EXEC, which Dovecot quota_clone uses, or I'd be using that instead of a plain TCP proxy (since the Envoy Redis proxy can use a username/password+tls to connect to the upstream Redis).

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Delivering locally through the Submission Server
by R. Diez 03 Nov '20

03 Nov '20

Hi all: I am learning Dovecot step by step. I have enabled the Submission Server, in the hope that I would not need to learn other MTAs like Postfix. The Submission Server is very comfortable: it picks up the existing Dovecot configuration, so that you do not need to configure any user authentication separately. It is working fine on my test setup. My first thought was that, if the recipient is a local mailbox, the Submission Server would not need to relay the message to any external SMTP server, as it could just deliver it locally. After all, it is running on the same Dovecot. But it cannot do that, can it? Is there a work-around? I am still hoping that the mail server still works locally if the Internet connection fails. But I would need to learn some Postfix magic for that, would I? Thanks in advance, rdiez

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Re: Delivering locally through the Submission Server
by Aki Tuomi 03 Nov '20

03 Nov '20

> On 03/11/2020 12:31 Piotr Auksztulewicz <dcml(a)hasiok.net> wrote: > > > On Mon, Nov 02, 2020 at 09:33:08PM +0100, R. Diez wrote: > > OK, so I gather that the Submission Server cannot do that (yet). > > And probably would never do. It isn't its job description. > > Actually, it is just a convenience/workaround feature, which comes handy > only if your own MTA cannot handle dovecot's SASL authentication (must be > something real strange) or there are some integration/security/policy > issue perceived (but I cannot think of any, actually). In this case you > can set up dovecot's submission server, which uses dovecot's authentication > settings, so you have single source of authentication, and whitelist > dovecot IP address in your MTA so it accepts anything that dovecot's > submission server lets through. But I don't think it is a good idea > personally, it is more open to exploitation this way, unless the > address is 127.0.0.1, in which case you can simply set up SASL over > Unix sockets, which is as secure as your host server is. > Submission service is not only a proxy, it - provides authentication natively from Dovecot - provides features like BURL, and maybe in future outbound Sieve but it does require real MTA behind. -- Aki

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API support for placing a message for a specific user
by Oren Yehezkely 03 Nov '20

03 Nov '20

Hello, I am trying to find out if Dovecot API allows placing a message directly in a customer's mailbox, without needing to send the email via SMTP. Thanks for your help, Oren

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Re: strange file .temp.1592374672.P11164Q21M692534.hostname - doveadm altmove
by Aki Tuomi 02 Nov '20

02 Nov '20

> On 01/11/2020 21:13 John Stoffel <john(a)stoffel.org> wrote: > > > >>>>> "Gionatan" == Gionatan Danti <g.danti(a)assyoma.it> writes: > > Gionatan> Il 2020-11-01 13:23 John Stoffel ha scritto: > >> How is your "mail_location" defined in your configuration? And what > >> is your search term? > > Gionatan> Hi, I just discovered having such strange .temp files on an > Gionatan> old server of mine. > > I honestly haven't a clue... I don't have these on my server at all. > > Gionatan> In some folders I have hundred of such files, but they > Gionatan> really are hardlinks to the same .temp file (for each > Gionatan> folder), so they do not consume much space. These files > Gionatan> seems much more common in the Trash folder, but they appear > Gionatan> even in other folder. > > I would probably just nuke these files, but maybe after confirming > what their contents really is. > > Gionatan> An example of a folder with 6 .temp files: > Gionatan> [root@mail dbox-Mails]# ls -al > Gionatan> /var/vmail/domain/user/dbox/mailboxes/INBOX/Trash/dbox-Mails > Gionatan> drwxr-x---. 2 vmail vmail 4096 Oct 31 12:42 . > Gionatan> drwxr-x---. 3 vmail vmail 4096 Mar 17 2020 .. > Gionatan> -rw-r-----. 1 vmail vmail 512 Oct 29 09:45 dovecot.index > Gionatan> -rw-r-----. 1 vmail vmail 392 Oct 28 13:59 dovecot.index.backup > Gionatan> -rw-r-----. 1 vmail vmail 55296 Oct 31 12:42 dovecot.index.cache > Gionatan> -rw-r-----. 1 vmail vmail 23536 Oct 31 12:42 dovecot.index.log > Gionatan> -rw-r-----. 6 vmail vmail 22215889 Oct 12 10:42 > Gionatan> .temp.1602492703.P47358Q0M194142.hostname > Gionatan> -rw-r-----. 6 vmail vmail 22215889 Oct 12 10:42 > Gionatan> .temp.1602494002.P50402Q0M898232.hostname > Gionatan> -rw-r-----. 6 vmail vmail 22215889 Oct 12 10:42 > Gionatan> .temp.1602494013.P50446Q0M771524.hostname > Gionatan> -rw-r-----. 6 vmail vmail 22215889 Oct 12 10:42 > Gionatan> .temp.1602494621.P51761Q0M119496.hostname > Gionatan> -rw-r-----. 6 vmail vmail 22215889 Oct 12 10:42 > Gionatan> .temp.1602494745.P51954Q0M387071.hostname > Gionatan> -rw-r-----. 6 vmail vmail 22215889 Oct 12 10:42 > Gionatan> .temp.1602495419.P53185Q0M671512.hostname > Gionatan> -rw-r-----. 1 vmail vmail 848909 Oct 29 21:12 u.1623 > > Gionatan> 6x 22M files = 128M... > Gionatan> [root@mail dbox-Mails]# du -hscl .temp.160249* > Gionatan> 22M .temp.1602492703.P47358Q0M194142.hostname > Gionatan> 22M .temp.1602494002.P50402Q0M898232.hostname > Gionatan> 22M .temp.1602494013.P50446Q0M771524.hostname > Gionatan> 22M .temp.1602494621.P51761Q0M119496.hostname > Gionatan> 22M .temp.1602494745.P51954Q0M387071.hostname > Gionatan> 22M .temp.1602495419.P53185Q0M671512.hostname > Gionatan> 128M total > > Gionatan> ...but only 22M really consumed (1 file, 6 hardlinks) > Gionatan> [root@mail dbox-Mails]# du -hsc .temp.160249* > Gionatan> 22M .temp.1602492703.P47358Q0M194142.hostname > Gionatan> 22M total > > Gionatan> I never run doveadm altmove; moreover, these .tempo files > Gionatan> are both old (>1 year) and new (~3 weeks ago). Below you can > Gionatan> find the output from dovecot -n. Any ideas? > > I really don't know, sorry! I'd have to got poke at the source to see > how they're created and where. I don't use dbox, I use Maildir for my > setup. > > So I suspect (but I'm not sure!) that these are just leftovers from > mailbox accesses which got left behind. Try googling for 'dovecot > dbox temp files' and maybe that will help. Sorry! > > John Those files are most likely leftovers due to failed operations, for reasons like crashes. Aki

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