- dovecot - dovecot.org

I never touched nuthin'
by mick crane 20 Jan '19

20 Jan '19

hello, do you mind if I ask before I start poking about ? suddenly I notice that gmail is ignoring or because there is an error getmail is not sending the delete request. Mails are sent and received but not deleted gmail so I keep getting them. mick@rapunzel:~/.getmail$ getmail --rcfile getmailrc1 Delivery error (command deliver 1363 wrote to stderr: lda(mick,)Error: net_connect_unix(/var/run/dovecot//stats-writer) failed: Permission denied) I think is apt install dovecot on debian buster probably I updated yesterday but was working OK since so I dunno what happened. is log full or something ? advices appreciated mick -- Key ID C7D6E24C

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2.3.4 doesnt compile on FreeBSD 11.2 using clang
by Chris 20 Jan '19

20 Jan '19

extract below, this has already been reported a while back but still no new patch, so this email is to serve as a reminder, if someone manually fixes it for the ports tree, I dont consider that a fix, ideally we need this fixed in the source code, as not everyone will install it from ports. Chris "clang40 -DHAVE_CONFIG_H -I. -I../.. -I../../src/lib -I../../src/lib-dns -I../../src/lib-test -I../../src/lib-settings -I../../src/lib-ssl-iostream -DPKG_RUNDIR=\""/var/run/dovecot"\" -DPKG_STATEDIR=\""/var/lib/dovecot"\" -DSYSCONFDIR=\""/etc/dovecot"\" -DBINDIR=\""/usr/bin"\" -I/usr/local/include -std=gnu99 -fdiagnostics-color -Wl,-rpath=/usr/local/llvm40/lib -O2 -pipe -march=native -fno-strict-aliasing -fstack-protector-strong -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -Wno-duplicate-decl-specifier -Wstrict-aliasing=2 -I/usr/local/include -MT test-event-stats.o -MD -MP -MF .deps/test-event-stats.Tpo -c -o test-event-stats.o test-event-stats.c clang-4.0: warning: -Wl,-rpath=/usr/local/llvm40/lib: 'linker' input unused [-Wunused-command-line-argument] test-event-stats.c:101:8: warning: implicit declaration of function 'kill' is invalid in C99 [-Wimplicit-function-declaration] (void)kill(stats_pid, SIGKILL); ^ test-event-stats.c:101:24: error: use of undeclared identifier 'SIGKILL' (void)kill(stats_pid, SIGKILL); ^ 1 warning and 1 error generated. gmake[2]: *** [Makefile:656: test-event-stats.o] Error 1 gmake[2]: Leaving directory '/usr/local/directadmin/custombuild/dovecot-2.3.4/src/lib-master' gmake[1]: *** [Makefile:565: install-recursive] Error 1 gmake[1]: Leaving directory '/usr/local/directadmin/custombuild/dovecot-2.3.4/src' gmake: *** [Makefile:683: install-recursive] Error 1"

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Re: Localhost imap server fails after upgrade from 2.2.33.2-1 to 1:2.3.2.1 (fwd)
by Chris BL 20 Jan '19

20 Jan '19

Hi Aki, Oops; I did not think carefully enough about your instructions. Here is the output from $ dovecot -n -c /home/meuser/dotfiles/auto-stanford-dovecot.conf # 2.3.2.1 (0719df592): /home/meuser/dotfiles/auto-stanford-dovecot.conf # Pigeonhole version 0.5.2 () # OS: Linux 4.18.0-13-generic x86_64 Ubuntu 18.10 ext4 # Hostname: cpbl-t450s doveconf: Warning: please set ssl_dh=</etc/dovecot/dh.pem doveconf: Warning: You can generate it with: dd if=/var/lib/dovecot/ssl-parameters.dat bs=1 skip=88 | openssl dhparam -inform der > /etc/dovecot/dh.pem mail_location = maildir:/home/meuser/imap/gmailStanford:LAYOUT=fs:INBOX=/home/meuser/imap/gmailStanford/INBOX service stats { unix_listener stats-writer { mode = 0666 } } ssl_dh = # hidden, use -P to show it verbose_proctitle = yes I then followed the instructions in the Warning lines above and now I get: dovecot -n -c /home/meuser/dotfiles/auto-stanford-dovecot.conf # 2.3.2.1 (0719df592): /home/meuser/dotfiles/auto-stanford-dovecot.conf # Pigeonhole version 0.5.2 () # OS: Linux 4.18.0-13-generic x86_64 Ubuntu 18.10 ext4 # Hostname: cpbl-t450s mail_location = maildir:/home/meuser/imap/gmailStanford:LAYOUT=fs:INBOX=/home/meuser/imap/gmailStanford/INBOX service stats { unix_listener stats-writer { mode = 0666 } } ssl_dh = # hidden, use -P to show it verbose_proctitle = yes However, this does not help my primary symptom: $ /usr/lib/dovecot/imap -c /home/meuser/dotfiles/auto-stanford-dovecot.conf imap(meuser,)Error: net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission denied * PREAUTH [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY LITERAL+ NOTIFY] Logged in as meuser Thanks! Chris On Mon, Dec 31, 2018 at 10:27 AM Aki Tuomi <aki.tuomi(a)open-xchange.com> wrote: Did you remove the service section before taking doveconf -n? 'cos I can't see it here.. Also, did you restart dovecot after config change? Aki > On 31 December 2018 at 16:54 Chris BL <cpblpublic+dovecot(a)gmail.com> wrote: > > > Hi Aki, > > Yes, the same connect error: imap(meuser,)Error: net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission denied > > The mail location in "doveconf -n" (belo) does not reflect my preferences. > > In Alpine, if I acknowledge the error I get, which tells me to add > novalidate-cert in my pinerc file, it prompts me for my POSIX username and > password. After that, I get my /var/spool/mail inbox, which is not what I > want. > > > doveconf -n > # 2.3.2.1 (0719df592): /etc/dovecot/dovecot.conf > # Pigeonhole version 0.5.2 () > # OS: Linux 4.18.0-13-generic x86_64 Ubuntu 18.10 > # Hostname: myhost-t450s > mail_location = mbox:~/mail:INBOX=/var/mail/%u > mail_privileged_group = mail > namespace inbox { > inbox = yes > location = > mailbox Drafts { > special_use = \Drafts > } > mailbox Junk { > special_use = \Junk > } > mailbox Sent { > special_use = \Sent > } > mailbox "Sent Messages" { > special_use = \Sent > } > mailbox Trash { > special_use = \Trash > } > prefix = > } > passdb { > driver = pam > } > protocols = " imap" > ssl_cert = </etc/dovecot/private/dovecot.pem > ssl_client_ca_dir = /etc/ssl/certs > ssl_dh = # hidden, use -P to show it > ssl_key = # hidden, use -P to show it > userdb { > driver = passwd > } > > > > On Mon, 31 Dec 2018, Aki Tuomi wrote: > > > You are still getting the connect error? > > > > Can you share your doveconf -n? > > > > Aki > > > > > On 31 December 2018 at 16:42 cpblpublic+dovecot(a)gmail.com wrote: > > > > > > > > > Hi Aki, > > > > > > Thanks. I put that in the .conf file I mentioned, and it made no > > > difference. > > > > > > Chris > > > > > > > Hi! > > > > > > > > In your case it's probably easiest to change > > > > > > > > service stats { > > > > unix_listener stats-writer { > > > > mode = 0666 > > > > } > > > > } > > > > > > > > Aki > > > > > > > > > On 31 December 2018 at 16:05 cpblpublic+dovecot(a)gmail.com wrote: > > > > > > > > > > > > > > > > > > > > I use a localhost dovecot imap server in order to access maildir folders from Alpine (see 2009 instructions for my set up here > > > > > https://cpbl.wordpress.com/2009/11/07/alpine-offlineimap-and-gmail-under-ub… ) > > > > > > > > > > My configuration has worked nicely since 2009, but failed after a recent upgrade of dovecot (during basic upgrade from Ubuntu 18.04 to 18.10). > > > > > > > > > > The version of Alpine did not change. Uninstalling dovecot-core and dovecot-imapd, and reinstalling the older versions, fully fixes the problem. > > > > > > > > > > I would like to know how to get my configuration working with the new version of dovecot. > > > > > > > > > > Here's what the problem looks like: > > > > > > > > > > I have a file auto-dovecot.conf with only the following two lines. > > > > > > > > > > verbose_proctitle = yes > > > > > mail_location = maildir:/home/meuser/imap/gmailStanford:LAYOUT=fs:INBOX=/home/meuser/imap/gmailStanford/INBOX > > > > > > > > > > Other /etc/ files are unchanged from installation defaults. > > > > > > > > > > Alpine calls imapd when it starts, with the following command: > > > > > > > > > > /usr/lib/dovecot/imap -c /home/meuser/dotfiles/auto-dovecot.conf > > > > > > > > > > > > > > > When I run that command, I get: > > > > > > > > > > imap(meuser,)Error: net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission denied > > > > > * PREAUTH [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE > > > > > SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT > > > > > MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS > > > > > LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN > > > > > CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY LITERAL+ NOTIFY] > > > > > Logged in as meuser > > > > > > > > > > > > > > > > > > > > > > > > > so I am guessing that the first line is the issue, since when the older version I get instead: > > > > > > > > > > * PREAUTH [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE > > > > > IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT > > > > > MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS > > > > > LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN > > > > > CONTEXT=SEARCH LIST-STATUS BINARY MOVE] Logged in as meuser > > > > > > > > > > > > > > > Can anyone help me? I cannot find documentation for using a localhost server for Alpine, except my own from 2009. > > > > > > > > > > Many thanks! > > > > > > > > > > Chris > > > > > >

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doveadm index crash/assert
by Larry Rosenman 20 Jan '19

20 Jan '19

I got the following crash whilst looking at my logs and seeing some indexer-worker crashes. doveadm(ler): Panic: file http-client-request.c: line 1108 (http_client_request_send_more): assertion failed: (req->payload_input != NULL) Abort trap (core dumped) bt full at: https://www.lerctr.org/~ler/doveadm.index.crash.txt doveconf -n: https://www.lerctr.org/~ler/doveconf.n.txt 2.3.4 from FreeBSD ports. What else do you need? -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 (c) E-Mail: larryrtx(a)gmail.com US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106

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Request: Pigeonhole - strip CWFS from message-id logs
by Lee Maguire 20 Jan '19

20 Jan '19

Normally for a log line containing the contents of a Message-Id, it is logged like the following Nov 29 11:41:27 xxx dovecot[211]: lmtp(lee)<30167><XXXXX>: sieve: msgid=<xxxx(a)example.net>: stored mail into mailbox 'Notifications' However, if there is CFWS other than a space, it changes the format of the log line (potentially making the logs harder to process - eg via “logcheck" rules) Nov 29 11:50:09 xxx dovecot[401]: lmtp(lee)<55724><XXXXX>: sieve: msgid=? <xxxx(a)example.com>: stored mail into mailbox ‘Notifications' A message-id line broken up is valid per RFC 5322 and header whitespace shouldn’t be significant for logging purposes https://tools.ietf.org/html/rfc5322#section-3.6.4 https://tools.ietf.org/html/rfc5322#section-3.2.2

2 2

Feature request: client bind address for replication
by John Fawcett 20 Jan '19

20 Jan '19

Hi would it be possible to consider a new parameter for replication: doveadm_local_ip which allows the source ip address to be set when connection to a remote dovecot for replication? It could be useful when the network interface has multiple ips and a specific one is used for mail services. See attached proposal. I tested against 2.2.36 only. It applies correctly against 2.3.4 with a warning,. John

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auth-worker service failed since recent MariaDB upgrade
by Bogomil Vasilev 20 Jan '19

20 Jan '19

Hello, I have started having issues with auth-worker. Dovecot version: 0 « root » ~ # dovecot --version 2.3.4 (0ecbaf23d) 0 « root » ~ # pacman -Q dovecot dovecot 2.3.4-2 OS: Arch Linux From /var/log/mail.log: Jan 20 11:31:29 archy dovecot[23070]: auth-worker: Fatal: master: service(auth-worker): child 9885 killed with signal 6 (core not dumped - https://dovecot.org/bugreport.html#coredumps - set /proc/sys/fs/suid_dum pable to 2) From dmesg: [42113.729398] auth[8134]: segfault at 5579d8e1c8e0 ip 00005579d8e1c8e0 sp 00007ffd44ab0df8 error 15 [42113.729406] Code: 00 00 00 00 00 00 00 00 00 00 80 00 00 00 00 00 00 00 21 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 20 7a af 07 e3 7f 00 00 <40> f4 b5 07 e3 7f 00 00 31 a0 00 00 00 00 00 00 e0 9f df d8 79 55 This started happening on January 18th, after I upgraded Dovecot from "2.3.4-1" to "2.3.4-2". The package was rebuilt from our package maintainer due to bumping MariaDB from 10.1.x to 10.3.x. Before that, I did not have any issues at all. However, I don't see any impact from this error too, at least not for now. I made a coredump as the error suggests and I'm pasting it here, as per the bugreport rules: 0 « root » ~ # gdb /usr/lib/dovecot/auth /home/smirky/dovecot.dump GNU gdb (GDB) 8.2.1 Copyright (C) 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/lib/dovecot/auth...(no debugging symbols found)...done. [New LWP 9549] [Thread debugging using libthread_db enabled] Using host libthread_db library "/usr/lib/libthread_db.so.1". Core was generated by `dovecot/auth -w'. Program terminated with signal SIGABRT, Aborted. #0 0x00007fe1bb8ead7f in raise () from /usr/lib/libc.so.6 (gdb) bt full #0 0x00007fe1bb8ead7f in raise () from /usr/lib/libc.so.6 No symbol table info available. #1 0x00007fe1bb8d5672 in abort () from /usr/lib/libc.so.6 No symbol table info available. #2 0x00007fe1bb92d878 in __libc_message () from /usr/lib/libc.so.6 No symbol table info available. #3 0x00007fe1bb93418a in malloc_printerr () from /usr/lib/libc.so.6 No symbol table info available. #4 0x00007fe1bb935b27 in _int_free () from /usr/lib/libc.so.6 No symbol table info available. #5 0x00007fe1bbc2bb89 in mysql_close () from /usr/lib/libmariadb.so.3 No symbol table info available. #6 0x0000563481946dac in ?? () No symbol table info available. #7 0x000056348193b8fc in db_sql_unref () No symbol table info available. #8 0x000056348193389c in userdb_deinit () No symbol table info available. #9 0x0000563481913bb9 in auths_deinit () No symbol table info available. #10 0x0000563481912664 in main () No symbol table info available. (gdb) The way I see it, indeed it is highly-likely to be related to the MariaDB version bump, but I cannot be entirely sure if it's not a bug in Dovecot, discovered by this bump. Please let me know if you need any other info, related to my setup. Best regards, -- BOGOMIL VASILEV For contacts, use this e-mail. My GPG key is 646F3ABF6E457336 Website: HTTPS://WWW.SMIRKY.NET/

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Re: Dovecot 2.3.4 crash
by Timo Sirainen 20 Jan '19

20 Jan '19

On 2 Dec 2018, at 22.22, Guillaume via dovecot <dovecot(a)dovecot.org> wrote: > > I also have this kind of segfault since the update : > > Dec 2 21:12:11 xxxxxxx dovecot: auth-worker: Error: *** Error in `dovecot/auth': double free or corruption (fasttop): 0x000055573bb99f70 Is this easy to reproduce? Can you try with valgrind? It will slow down the logins a bit though. service auth-worker { executable = /usr/bin/valgrind -q --vgdb=no /usr/lib/dovecot/auth -w } At least one good thing about this crash is that it seems to happen only at deinit, so it's not impacting users.

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doveadm move that hangs
by Marc Roos 20 Jan '19

20 Jan '19

I have a doveadm move that hangs, and cannot kill it. Leaving these files. Did I lose mails now? -rw------- 1 testuser popusers 4.0M Jan 20 17:42 .temp.1548002572.P1969Q0M313023.host -rw------- 1 testuser popusers 3.9M Jan 20 17:42 .temp.1548002572.P1969Q1M313023.host -rw------- 1 testuser popusers 1017K Jan 20 17:42 .temp.1548002572.P1969Q2M313023.host drwx------ 1 testuser popusers 574 Jan 20 17:42 . -rw------- 1 testuser popusers 12M Jan 20 17:42 .temp.1548002572.P1969Q3M313023.host

1 0

SCRAM-SHA-256 and SCRAM-SHA-512 supports
by - Neustradamus - 20 Jan '19

20 Jan '19

Hello all, I would like to know if it is possible to add SCRAM-SHA-256 and SCRAM-SHA-512 supports? RFC7677: SCRAM-SHA-256 and SCRAM-SHA-256-PLUS: Simple Authentication and Security Layer (SASL) Mechanisms https://tools.ietf.org/html/rfc7677 Thanks in advance. Regards, Neustradamus

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auth core dump
by Mamontov Roman 20 Jan '19

20 Jan '19

2 2

Sieve: reject certain mime-types and notify recipient
by Ralf Becker 20 Jan '19

20 Jan '19

I have to reject office files for a certain domain plus notifying the original recipient about the rejection too. require ["fileinto","reject","body","enotify","variables"]; if allof (address :contains ["To","TO","Cc","CC"] "@example.org", body :content "application/msword" :contains "") { set "to" "${1}"; # :matches is used to get the value of the Subject header if header :matches "Subject" "*" { set "subject" "${1}"; } # :matches is used to get the value of the From header if header :matches "From" "*" { set "from" "${1}"; } notify :message "Rejected Office Datei ${from}: ${subject}" "${to}"; reject text: Aus Sicherheitsgründen nehmen wir keine Office Dateien mehr an. Bitte senden Sie uns ein PDF. . ; } A manual sievec call gives not error and if I remove everything but the reject line it works. Any ideas? -- Ralf Becker EGroupware GmbH [www.egroupware.org] Handelsregister HRB Kaiserslautern 3587 Geschäftsführer Birgit und Ralf Becker Leibnizstr. 17, 67663 Kaiserslautern, Germany Telefon +49 631 31657-0

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Localhost imap server fails after upgrade from 2.2.33.2-1 to 1:2.3.2.1
by cpblpublic+dovecot＠gmail.com 20 Jan '19

20 Jan '19

I use a localhost dovecot imap server in order to access maildir folders from Alpine (see 2009 instructions for my set up here https://cpbl.wordpress.com/2009/11/07/alpine-offlineimap-and-gmail-under-ub… ) My configuration has worked nicely since 2009, but failed after a recent upgrade of dovecot (during basic upgrade from Ubuntu 18.04 to 18.10). The version of Alpine did not change. Uninstalling dovecot-core and dovecot-imapd, and reinstalling the older versions, fully fixes the problem. I would like to know how to get my configuration working with the new version of dovecot. Here's what the problem looks like: I have a file auto-dovecot.conf with only the following two lines. verbose_proctitle = yes mail_location = maildir:/home/meuser/imap/gmailStanford:LAYOUT=fs:INBOX=/home/meuser/imap/gmailStanford/INBOX Other /etc/ files are unchanged from installation defaults. Alpine calls imapd when it starts, with the following command: /usr/lib/dovecot/imap -c /home/meuser/dotfiles/auto-dovecot.conf When I run that command, I get: imap(meuser,)Error: net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission denied * PREAUTH [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY LITERAL+ NOTIFY] Logged in as meuser so I am guessing that the first line is the issue, since when the older version I get instead: * PREAUTH [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE] Logged in as meuser Can anyone help me? I cannot find documentation for using a localhost server for Alpine, except my own from 2009. Many thanks! Chris

5 9

Issue with LMTP proxying and port number
by Steven Craig 20 Jan '19

20 Jan '19

Hello there, Everything was working fine on Dovecot 2.2.10 (on CentOS 7), but after updating to version 2.2.36, our director servers are not able to proxy LMTP. We are sending mail from exim to the local Dovecot LMTP socket, which then used to send it to our internal mail servers on port 24. Besides the update, nothing has changed in the config files. The configuration has been working great for months … Then we had a great idea of doing holiday maintenance. (Currently, we are working around this issue by having exim send mail to the IP and port, instead of the socket.) Doing a tcpdump capture shows no TCP traffic either. The logs seem to say that it is trying to go to port 0, so my guess is that it’s not getting the port directive from either static or sql — since the docs state that if these settings aren't specified, it will always use the same connection type for the proxy that it received the connection on. Any thoughts? I can share config if necessary.

2 5

Authentication/Penalty disabled (socket mode=0) introduces constant 5 sec delays (2.27 on debian 9)
by Ludovic Pouzenc 20 Jan '19

20 Jan '19

Hi, I hit a bizare problem with dovecot 2.2.7 on debian 9 with LMTP enabled and auth/penalty disabled as documented here : https://wiki.dovecot.org/Authentication/Penalty Use case : I run a swaks command to send an email to an exim4 that tries to make a callout to dovecot-lmtp. At RCPT TO: swaks hangs 5.0<something-small> seconds then process normally (exim is waiting for callout completion). with strace, I see 5 second delay with many tries to socket connection. (PID 9652 was an auth process freshly forked) [pid 9652] socket(AF_UNIX, SOCK_STREAM, 0) = 14 [pid 9652] fcntl(14, F_GETFL) = 0x2 (flags O_RDWR) [pid 9652] fcntl(14, F_SETFL, O_RDWR|O_NONBLOCK) = 0 [pid 9652] connect(14, {sa_family=AF_UNIX, sun_path="anvil-auth-penalty"}, 110) = -1 ECONNREFUSED (Connection refused) [pid 9652] close(14) = 0 [pid 9652] nanosleep({tv_sec=0, tv_nsec=20000000}, NULL) = 0 [pid 9652] socket(AF_UNIX, SOCK_STREAM, 0) = 14 [pid 9652] fcntl(14, F_GETFL) = 0x2 (flags O_RDWR) [pid 9652] fcntl(14, F_SETFL, O_RDWR|O_NONBLOCK) = 0 [pid 9652] connect(14, {sa_family=AF_UNIX, sun_path="anvil-auth-penalty"}, 110) = -1 ECONNREFUSED (Connection refused) [pid 9652] close(14) = 0 [pid 9652] nanosleep({tv_sec=0, tv_nsec=50000000}, NULL) = 0 [pid 9652] socket(AF_UNIX, SOCK_STREAM, 0) = 14 [pid 9652] fcntl(14, F_GETFL) = 0x2 (flags O_RDWR) [pid 9652] fcntl(14, F_SETFL, O_RDWR|O_NONBLOCK) = 0 [pid 9652] connect(14, {sa_family=AF_UNIX, sun_path="anvil-auth-penalty"}, 110) = -1 ECONNREFUSED (Connection refused) [pid 9652] close(14) = 0 [pid 9652] nanosleep({tv_sec=0, tv_nsec=90000000}, NULL) = 0 with ddd I get to: src/lib-master/anvil-client.c: int anvil_client_connect(struct anvil_client *client, bool retry) { //[...] fd = retry ? net_connect_unix_with_retries(client->path, 5000) : net_connect_unix(client->path); //[...] and retry is forced to TRUE by the caller and net_connect_unix_with_retries retries in case of ECONNREFUSED. How I get into it : ssh -X root@telegraphe-test apt install dovecot-dbg cd /dev/shm apt source dovecot cd dovecot-2.2.27 pidof dovecot ddd /usr/sbin/dovecot set follow-fork-mode child attach 11833 cont # Send an e-mail from swaks to exim that use transport=smtp in LMTP mode to dovecot-lmtp, press interrupt while exim is blocking after RCPT TO: (gdb) bt #0 0x00007f81528af270 in __nanosleep_nocancel () at ../sysdeps/unix/syscall-template.S:84 #1 0x00007f81528d8b84 in usleep (useconds=<optimized out>) at ../sysdeps/posix/usleep.c:32 #2 0x00007f815329368e in net_connect_unix_with_retries (path=0x562dc200ce10 <error: Cannot access memory at address 0x562dc200ce10>, msecs=msecs@entry=5000) at net.c:347 #3 0x00007f815320ce0d in anvil_client_connect (client=0x562dc200cda0, retry=retry@entry=true) at anvil-client.c:136 #4 0x0000562dc1429f5d in auth_penalty_init (path=0x562dc1451846 <error: Cannot access memory at address 0x562dc1451846>) at auth-penalty.c:37 #5 0x0000562dc1424166 in main_preinit () at main.c:202 #6 main (argc=<optimized out>, argv=<optimized out>) at main.c:396 (gdb) bt full #1 0x00007f81528d8b84 in usleep (useconds=<optimized out>) at ../sysdeps/posix/usleep.c:32 ts = {tv_sec = 0, tv_nsec = 80000000} #2 0x00007f815329368e in net_connect_unix_with_retries (path=0x562dc200ce10 <error: Cannot access memory at address 0x562dc200ce10>, msecs=msecs@entry=5000) at net.c:347 start = {tv_sec = 1545319486, tv_usec = 241864} now = {tv_sec = 1545319490, tv_usec = 198061} fd = -1 #3 0x00007f815320ce0d in anvil_client_connect (client=0x562dc200cda0, retry=retry@entry=true) at anvil-client.c:136 fd = <optimized out> __FUNCTION__ = <error reading variable __FUNCTION__ (Cannot access memory at address 0x7f81532a8260)> #4 0x0000562dc1429f5d in auth_penalty_init (path=0x562dc1451846 <error: Cannot access memory at address 0x562dc1451846>) at auth-penalty.c:37 No locals. #5 0x0000562dc1424166 in main_preinit () at main.c:202 mod_set = <error reading variable mod_set (Cannot access memory at address 0x7ffda885db80)> #6 main (argc=<optimized out>, argv=<optimized out>) at main.c:396 c = <optimized out> Backtrace stopped: Cannot access memory at address 0x7ffda885dbf8 (gdb) Code I've read : src/auth/main.c: static void main_preinit(void) if (!worker) auth_penalty = auth_penalty_init(AUTH_PENALTY_ANVIL_PATH); auth_request_stats_init(); src/auth/auth-penalty.c: struct auth_penalty *auth_penalty_init(const char *path) if (anvil_client_connect(penalty->client, TRUE) < 0) penalty->disabled = TRUE; else { src/lib-master/anvil-client.c: int anvil_client_connect(struct anvil_client *client, bool retry) fd = retry ? net_connect_unix_with_retries(client->path, 5000) : net_connect_unix(client->path); src/lib/net.c : int net_connect_unix_with_retries(const char *path, unsigned int msecs) { struct timeval start, now; int fd; if (gettimeofday(&start, NULL) < 0) i_panic("gettimeofday() failed: %m"); do { fd = net_connect_unix(path); if (fd != -1 || (errno != EAGAIN && errno != ECONNREFUSED)) // <------------------ HERE, I go into ECONNREFUSED case during 5 seconds break; /* busy. wait for a while. */ usleep(((rand() % 10) + 1) * 10000); if (gettimeofday(&now, NULL) < 0) i_panic("gettimeofday() failed: %m"); } while (timeval_diff_msecs(&now, &start) < (int)msecs); return fd; } Additionnal environment infos (mailboxes are NFS-backed) : lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 9.2 (stretch) Release: 9.2 Codename: stretch mount | grep ^/ /dev/sda1 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered) mount | grep nfs nfs1:/mail/maildir on /var/maildir type nfs (rw,relatime,vers=3,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.16.2.28,mountvers=3,mountport=635,mountproto=udp,local_lock=none,addr=172.16.2.28) nfs1:/mail on /var/mail type nfs (rw,relatime,vers=3,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.16.2.28,mountvers=3,mountport=635,mountproto=udp,local_lock=none,addr=172.16.2.28) cifs1:/homepermanents/info/lpouzenc on /home/lpouzenc type nfs (rw,nosuid,nodev,relatime,vers=3,rsize=65536,wsize=65536,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.16.2.29,mountvers=3,mountport=635,mountproto=udp,local_lock=none,addr=172.16.2.29) telegraphe-test:~# apt-cache policy dovecot-core dovecot-core: Installé : 1:2.2.27-3+deb9u2 Candidat : 1:2.2.27-3+deb9u2 Table de version : *** 1:2.2.27-3+deb9u2 500 500 http://miroir/debian stretch/main amd64 Packages 500 http://security.debian.org/debian-security stretch/updates/main amd64 Packages 100 /var/lib/dpkg/status telegraphe-test:~# dovecot -n # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) doveconf: Warning: service auth { client_limit=10000 } is lower than required under max. load (10240) # OS: Linux 4.9.0-4-amd64 x86_64 Debian 9.2 nfs auth_verbose = yes default_client_limit = 10000 default_process_limit = 2048 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_debug = yes mail_fsync = always mail_location = maildir:/var/mail/maildir/%u managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext mmap_disable = yes namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = separator = / } passdb { driver = pam } plugin { sieve = file:/var/mail/mailconf/%1u/%u/sieve;active=/var/mail/mailconf/%1u/%u/.dovecot.sieve sieve_before = /var/mail/mailconf/global/sieve/before.d sieve_global = /var/mail/mailconf/global/sieve sieve_vacation_dont_check_recipient = yes } protocols = " imap lmtp sieve sieve" service anvil { unix_listener anvil-auth-penalty { mode = 00 } } service lmtp { inet_listener lmtp { port = 24 } } service managesieve { process_limit = 16 } ssl_cert = </etc/ssl/certs/telegraphe7_cert.pem ssl_key = # hidden, use -P to show it syslog_facility = local0 userdb { driver = passwd } verbose_proctitle = yes protocol lmtp { auth_username_format = %n mail_plugins = " sieve" } protocol imap { mail_max_userip_connections = 20 } Could you see a config tuning that keeps auth-penalty out of the way (it seems to behaves badly here, because we have perdition IMAP proxy in front, and it keeps track only of his IP and adds 2/4/8/15s delays to "random" legit clients. Could it be saved with a dedicated config entry to disable auth-penalty ? Is there solution to have auth-penalty working while having perdition IMAP proxy ? Regards, Ludovic Pouzenc -- Ludovic POUZENC - Ingénieur Système IMT Mines Albi (http://www.imt-mines-albi.fr) 81013 ALBI CT Cedex 09 - Tel : 05 63 49 33 56

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panic when using dovecot master account
by André Rodier 20 Jan '19

20 Jan '19

Hello, I am running dovecot 2.2.34 (874deae), on Debian stable, from backports. I just tried the master account, and although everything worked in the email client, I had logs in the error logs: > imap(mirina): Panic: file mail-index-sync.c: line 413 > (mail_index_sync_begin_to2): assertion failed: (!index->syncing) > Nov 08 22:06:24 osaka dovecot[1450]: imap(mirina): Error: Raw > backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x9e412) [0x7f20ae813412] > -> /usr/lib/dovecot/libdovecot.so.0(+0x9e50d) [0x7f20ae81350d] -> > /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f20ae7a2c51] -> > /usr/lib/dovecot/libdovecot-storage.so.0(+0xe0fe4) [0x7f20aeb88fe4] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_sync_begin_to+0x4f) > [0x7f20aeb890bf] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_sync_begin+0x1c) > [0x7f20aeb8915c] -> > /usr/lib/dovecot/modules/lib20_virtual_plugin.so(virtual_storage_sync_init+0x218) > [0x7f20ad51f308] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x44) > [0x7f20aeaf02d4] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37) > [0x7f20aeaf0387] -> > /usr/lib/dovecot/libdovecot-storage.so.0(index_storage_get_status+0x31) > [0x7f20aeb6bbf1] -> > /usr/lib/dovecot/modules/lib20_virtual_plugin.so(+0x936d) > [0x7f20ad51c36d] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xa8771) > [0x7f20aeb50771] -> > /usr/lib/dovecot/modules/lib20_fts_plugin.so(+0xfd46) [0x7f20adb8bd46] > -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_get_status+0x31) > [0x7f20aeaf0781] -> > /usr/lib/dovecot/modules/lib20_virtual_plugin.so(virtual_storage_sync_init+0x10b8) > [0x7f20ad5201a8] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x44) > [0x7f20aeaf02d4] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37) > [0x7f20aeaf0387] -> > /usr/lib/dovecot/libdovecot-storage.so.0(index_storage_get_status+0x31) > [0x7f20aeb6bbf1] -> > /usr/lib/dovecot/modules/lib20_virtual_plugin.so(+0x936d) > [0x7f20ad51c36d] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xa8771) > [0x7f20aeb50771] -> > /usr/lib/dovecot/modules/lib20_fts_plugin.so(+0xfd46) [0x7f20adb8bd46] > -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_get_status+0x31) > [0x7f20aeaf0781] -> > /usr/lib/dovecot/modules/lib20_virtual_plugin.so(virtual_storage_sync_init+0x10b8) > [0x7f20ad5201a8] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x44) > [0x7f20aeaf02d4] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37) > [0x7f20aeaf0387] -> dovecot/imap(cmd_select_full+0x16b) > [0x557de970cc3b] -> dovecot/imap(command_exec+0x5c) [0x557de971444c] -> > dovecot/imap(+0x1a912) [0x557de9712912] > Nov 08 22:06:24 osaka dovecot[1450]: imap(mirina): Fatal: master: > service(imap): child 4289 killed with signal 6 (core dumps disabled) I attach my dovecot configuration too. Thanks for your help.

3 6

Moving messages on test server, dovecot.index.log was locked for x seconds on cephfs
by Marc Roos 20 Jan '19

20 Jan '19

I am getting on a test environment were no users are logging in a dovecot.index.log was locked when moving messages with doveadm move -u testuser Archive/2012 mailbox INBOX/inbox BEFORE 2013-01-01. doveadm(testuser): Warning: Transaction log file /var/dovecot/testuser/index/.INBOX.inbox/dovecot.index.log was locked for 215 seconds (rotating while syncing) I have read about how this can be related to default locking fcntl and nfs, anyone having this solved with cephfs? https://www.dovecot.org/list/dovecot/2009-January/036194.html

1 0

Dovecot 2.3 no longer accepts ssl_key_password
by Chris Kiakas 20 Jan '19

20 Jan '19

Hit a little problem when I upgraded a system from FreeBSD 10.3 to 11.2. I did not receive any errors in the upgrade. The system is running 4 jails and everything seems to work except in Dovecot dovecot-2.3.4_5 where when using the exact same configuration which worked in 10.3 with the same password protected certificate key. (doveconf -n -P shows the correct password.) ssl_ca = </usr/local/etc/site.keys/name_com.ca-bundle ssl_cert = </usr/local/etc/site.keys/name_com.crt ssl_dh = </usr/local/etc/dovecot/dh.pem ssl_key = </usr/local/etc/site.keys/name.com.key ssl_key_password = keypassword The password works with openssl. Changing the password on the key has no effect. Removing the password on the cert with openssl and running dovecot with the new key works. I installed on another system and I am experiencing the same results. The issue persists whether I install dovecot from ports or pkg. I can't see where the problem is. It seems that Dovecot is unable to read the key when password protected even though it has the correct password. Has anyone experienced this? Chris

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Re: Feature request SCRAM-SHA-256
by Stephan Bosch 20 Jan '19

20 Jan '19

Op 16/12/2018 om 10:06 schreef Tributh via dovecot: > > Am 16.12.18 um 09:42 schrieb Aki Tuomi: >>> On 16 December 2018 at 10:27 Tributh via dovecot <dovecot(a)dovecot.org> wrote: >>> >>> >>> Hi, >>> is that here the right place to make feature requests? >>> >>> dovecot supports as authentication mechanism >>> SCRAM-SHA-1 from RFC 5802 >>> which was updated to >>> SCRAM-SHA-256 in RFC 7677 >>> >>> Can SCRAM-SHA-256 be added to the authentication mechanisms? >>> >>> I would not like to request, that SCRAM-SHA-1 will be exchanged by >>> SCRAM-SHA-256, since several applications only support SCRAM-SHA-1 >>> >>> Regards >>> >>> Torsten >> Hi! >> >> Adding this is possible, it can even be done as a separate plugin. But I have to ask, why? Do you actually have clients that support this? >> >> Aki >> > Hi Aki, > let me first answer the second question. > Sadly I have no client which supports it, yet. > Here we have a chicken or the egg causality dilemma. > There was some communication with mail-client developers which stated > that they would start developing it, when they have a publicly usable > server to test against. > Now I hope that the most common IMAP server could be the one, which > gives this possibility. > Sadly, most communication is not publicly available. > > In the past CRAM-MD5 was very popular. When the insecurity came out, > everything just shifted to TLS, but that prevented not from sending a > plain password now. If a malicious actor is able to change DNS/TLS > endpoints, he will receive the plain passwords immediately. > I am not the expert in explaining how such an actor could do this. I > just wanted to have possibilities for everybody to prevent this possible > exposure of a plain password, which could than easily used abusively. > > I just hope for better security in the future. I looked a this a bit and since it is basically only a matter of replacing the hash algorithm, I created a quick implementation (after some refactoring): https://github.com/stephanbosch/dovecot-core/commits/auth-scram-sha-256 However, since there is no client that actually supports this, I cannot test this myself. I've briefly tested that the old SHA-1 still works (using mpop) and that the server properly announces the new mechanism when enabled, but that is it. It is based on the master branch. Configuration is identical to SCRAM-SHA-1, apart from the mechanism (and password scheme) name of course. Don't expect this to be released or even merged to the master branch any time soon: this is likely currently very low on our priority list. But, at least you can run your own server with SCRAM-SHA-256 support (and so can client developers). Maybe if this gets endorsed and supported by clients and gets some testing in the field, we can speed it along a bit, but that is not something I can promise. So, I hatched a chick for you. I hope you can make it lay a few eggs in the future... Regards, Stephan.

2 2

IMAP preauth and stats-writer
by Mark Hills 20 Jan '19

20 Jan '19

I use IMAP preauth; I connect with Alpine over SSH which is very useful. The last few upgrades this has become more difficult to to. Last time (moving 2.2 -> 2.3, I think) I had to put in a workaround: stats_writer_socket_path = It prevented /usr/local/libexec/dovecot/imap attempting to connect to a central stats service. As of an upgrade today (2.3.2.1_1 -> 2.3.4_3 on FreeBSD) it looks like that 'fix' stopped working, and I get: imap(mark,)Error: net_connect_unix() failed: Permission denied It goes to stderr, which breaks Alpine. "()" is actually the filename. It seems that the empty string is no longer an indication to disable it. Here it is with the default configuration: imap(mark,)Error: net_connect_unix(/var/run/dovecot/stats-writer) failed: Permission denied I do also have a dovecot running as a system daemon, and, interestingly, disable this and it's 'fixed'; no attempt to connect. However, disabling the service is not an option (needed for smartphone) The best I've come up with so far is when using preauth to hack it to send stderr to /dev/null. And yes, probably Alpine is at fault for interpreting stderr content (separate issue) * Is there a way to cleanly disable reporting to the stats service? Previously, running as preauth was all very clean. * Just wanted to highlight that IMAP preauth is really useful. Even though it might not be mainstream, it seems healthy to be able to easily install dovecot as an unprivilidged user in a "unixy" way. I'm on FreeBSD 11.2, with dovecot from ports. dovecot.conf below. -- Mark # # Dovecot configuration # mail_location = maildir:~/Maildir postmaster_address = postmaster namespace { inbox = yes } ssl = required ssl_cert = </etc/ssl/lets.crt ssl_key = </etc/ssl/local.key ssl_dh = </etc/ssl/dh.pem # # No writing of statistics to a priviledged service; # this is troublesome for a user to run the IMAP client # #stats_writer_socket_path = # # Authentication: only allow passwords sent over TLS, and # check against the system password database # passdb { driver = pam } userdb { driver = passwd } # # Disable all except standard IMAP with TLS logins # service imap-login { inet_listener imaps { port = 0 } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 0 } } # # An authentication service to allow Exim to use the # same credentials as Dovecot # service auth { unix_listener auth-client { mode = 0600 user = mailnull } } protocol imap { mail_max_userip_connections = 40 } # END

4 9

BUG 'doveadm mailbox' list does not honour symlinks to (mbox) mailboxes
by Marc Roos 20 Jan '19

20 Jan '19

doveadm mailbox list does not honour symlinks to at least the mbox mailboxes I relocated temporarily. You would expect it to behave similar to the server and use the symlinks. dovecot-2.2.36-3.el7.x86_64 CentOS Linux release 7.6.1810 (Core)

1 0

Re: Feature request SCRAM-SHA-256
by Stephan Bosch 20 Jan '19

20 Jan '19

Hi, Op 13/01/2019 om 17:48 schreef Tributh via dovecot: > Hi, > sorry for my late reply. Was too busy during the week. > Thank you for your patches. I hope I will be able with them to get now > some client support for SCRAM-SHA-256. Will report how I succeed in the > future. I managed to test it successfully using MailKit: https://github.com/jstedfast/MailKit I used the IMAP demo in samples/ImapClientDemo. I limited the available mechanisms presented by the server to SCRAM-SHA-256 exclusively, so the demo needs no modification. So, from our end it seems to work fine. Regards, Stephan.

1 0

Reloading dovecot after certificate renewal?
by ＠lbutlr 17 Jan '19

17 Jan '19

Is it enough to issue a `service restart dovecot` when a certificate renews or do I need to service stop/start? -- "A thousand years ago we thought the world was a bowl. Five hundred years ago we knew it was a globe. Today we know it is flat and round carried through space on the back of a turtle. Don't you wonder what shape it will turn out to be tomorrow?" [Lord Vetinari]

1 1

Re: Authentication lost within session
by Sami Ketola 17 Jan '19

17 Jan '19

> On 17 Jan 2019, at 14.19, Marc Roos <M.Roos(a)f1-outsourcing.eu> wrote: > > > Same ip, connection, session happens after a few seconds, all on local > test network. Sorry I mistakenly overlooked at the ip:s. But anyway that is multiple connections and seems that PAM has some concurrency limit and refuses the third connection Thunderbird opens. so you probably have pam_limits with maxlogins=2 enabled. Sami

2 2

Need help deduplicating messages fetched with getmail into dovecot mailbox
by Gabriel Kaufmann 17 Jan '19

17 Jan '19

Hello everyone, I'm using getmail to fetch some external mails from POP3 into a dovecot mailbox (providing IMAP). Getmail seems to have some serious problems keeping track of mails already fetched. I have every Mail exactly twice in my Mailbox delivered by Dovecot. Of course they are not in the original external POP3 Inbox. I hope I'm in right place here. I think the problem is not dovecot related, but getmail. As there is a huge number of user complains about getmail (and obviously no alternative?!) I hope to find some help here for a workaround. I noticed getmail can be configured for some kind of filtering to sort out Mails for local delivery to dovecot. http://pyropus.ca/software/getmail/configuration.html#filter-examples Does anyone know how to query the message-id (given by mail-headers) with doveadm? My first test was this: > doveadm fetch -u my-mailbox(a)domain.net "mailbox date.sent" message-id > "<369408722.286104911.1547114312259.Foo.root(a)someone.org>" But then I noticed this is only ment to be used with dovecot internal GUID - I think... Is it possible to query for the mail message-id also? Is it posible to reconfigure indexing to include this propery from the original message-file? I made a small perl-script to extract it using Perl-Lib Email::Simple. > To: my-mailbox(a)domain.net > *Message-ID: <369408722.286104911.1547114312259.Foo.root(a)someone.org>* > Subject: Some test I also already tried the doveadm deduplicate, but this also doesn't work as it is also basing on the internal GUID of dovecot and every duplicate-message seems to have a new, unique GUID. > doveadm deduplicate -u gabriel.kaufmann(a)gmx.net mailbox-guid May be anyone know a better solution. -- Best regards Gabriel Kaufmann

2 4