- dovecot - dovecot.org

Re: Re: invalid vsize-hdr
by Станислав Дырив 17 Dec '21

17 Dec '21

it helps for me (dovecot 2.2.36 @ centos7): #delete index files: find /path/to/user/maildir/ -type f -name dovecot.index* -delete find /path/to/user/maildir/ -type f -name dovecot-uidlist -delete #then re-create index by command: doveadm force-resync -u "user(a)domain.com" '*'

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Can dovecot be leveraged to exploit Solr/Log4shell?
by Joseph Tam 15 Dec '21

15 Dec '21

I'm surprised I haven't seen this mentioned yet. An internet red alert went out Friday on a new zero-day exploit. It is an input validation problem where Java's Log4j module can be instructed via a specially crafted string to fetch and execute code from a remote LDAP server. It has been designated the Log4shell exploit (CVE-2021-44228). Although I don't use it, I immediately thought of Solr, which provides some dovecot installations with search indexing. Can dovecot be made to pass on … [View More]

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quota warnings not sent out anymore
by mj 15 Dec '21

15 Dec '21

Hi, We suddenly realised that our maildir quota warnings are no longer sent out. We don't understand why not. This is dovecot 2.3.4.1 on debian 10.11. We use a script to send out the notification, adapted from the dovecot wiki here: (https://doc.dovecot.org/configuration_manual/quota/) Our quota notification script is: > #!/bin/sh > PERCENT=$1 > USER=$2 > cat << EOF | /usr/lib/dovecot/dovecot-lda -d $USER -o "plugin/quota=maildir::noenforcing" > From: noreply(a)… [View More]domain.com > Subject: quota warning > > Your mailbox is now $PERCENT% full. > > Please delete or archive items to decrease your mailbox size. Our complete doveconf -n output is at the end of this email. When calling the script manually as user root, it works perfectly. But as user vmail or dovecot, no notifications are sent at all. I guess this is relevant: > root@dovecot:/etc/dovecot# ls -l /var/run/dovecot/ > total 8 > srw------- 1 root root 0 Dec 6 00:00 anvil > srw------- 1 root root 0 Dec 6 00:00 anvil-auth-penalty > srw------- 1 dovecot root 0 Dec 6 11:34 auth-client > srw------- 1 dovecot root 0 Dec 6 11:34 auth-login > srw------- 1 root root 0 Dec 6 11:34 auth-master > -rw------- 1 root root 32 Jul 19 17:39 auth-token-secret.dat > srw-rw-rw- 1 vmail vmail 0 Dec 6 11:34 auth-userdb > srw------- 1 dovecot root 0 Dec 6 11:34 auth-worker > srw------- 1 root root 0 Dec 6 11:34 config > srw-rw---- 1 root dovecot 0 Dec 6 11:34 dict > srw-rw---- 1 root dovecot 0 Dec 6 11:34 dict-async > srw------- 1 root root 0 Dec 6 11:34 director-admin > srw-rw-rw- 1 root root 0 Dec 6 11:34 dns-client > srw------- 1 root root 0 Dec 6 11:34 doveadm-server > lrwxrwxrwx 1 root root 25 Dec 6 00:00 dovecot.conf -> /etc/dovecot/dovecot.conf > drwxr-xr-x 2 root root 40 Jul 19 17:39 empty > srw-rw---- 1 root dovecot 0 Dec 6 11:34 imap-hibernate > srw------- 1 root root 0 Dec 6 11:34 imap-master > srw-rw-rw- 1 root root 0 Dec 6 11:34 imap-urlauth > srw------- 1 dovecot root 0 Dec 6 11:34 imap-urlauth-worker > srw-rw-rw- 1 root root 0 Dec 6 11:34 indexer > srw------- 1 dovecot root 0 Dec 6 11:34 indexer-worker > srw------- 1 dovecot root 0 Dec 6 11:34 ipc > srw-rw-rw- 1 root root 0 Dec 6 11:34 lmtp > srw------- 1 root root 0 Dec 6 11:34 log-errors > drwxr-x--- 2 root nogroup 120 Dec 6 11:34 login > srw------- 1 root root 0 Dec 6 11:34 master > -rw------- 1 root root 6 Dec 6 00:00 master.pid > srw------- 1 root root 0 Dec 6 11:34 old-stats > prw------- 1 root root 0 Dec 6 11:34 old-stats-mail > prw------- 1 root root 0 Dec 6 11:34 old-stats-user > srw------- 1 vmail root 0 Dec 6 11:34 quota-warning > srw------- 1 root root 0 Dec 6 11:34 replication-notify > prw------- 1 root root 0 Dec 6 11:34 replication-notify-fifo > srw------- 1 dovecot root 0 Dec 6 11:34 replicator > srw-rw---- 1 vmail vmail 0 Dec 6 11:34 stats-reader > srw-rw---- 1 vmail vmail 0 Dec 6 11:34 stats-writer > drwxr-x--- 2 root nogroup 80 Dec 6 11:34 token-login Can anyone help, and explain what is going on here? Thank you very much in advance for a reply! MJ The doveconf -n output: > root@imap:/etc/dovecot# doveconf -n > # 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf > # Pigeonhole version 0.5.4 () > # OS: Linux 4.19.0-17-amd64 x86_64 Debian 10.11 xfs > # Hostname: mail.company.com > auth_debug = yes > auth_failure_delay = 10 secs > auth_master_user_separator = * > auth_mechanisms = plain login > auth_username_format = %Ln > auth_verbose = yes > auth_verbose_passwords = sha1 > default_vsz_limit = 512 M > deliver_log_format = %f | %s | msgid=%m: %$ > lda_mailbox_autocreate = yes > lda_mailbox_autosubscribe = yes > login_greeting = Dovecot ready. > login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c lport=%a > mail_gid = vmail > mail_location = maildir:/var/vmail/%Ln/Maildir:LAYOUT=fs:DIRNAME=mAildir > mail_plugins = acl lazy_expunge zlib quota mail_log notify > mail_shared_explicit_inbox = yes > mail_uid = vmail > 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 ihave > namespace { > list = children > location = maildir:/var/vmail/%%u/Maildir:LAYOUT=fs:DIRNAME=mAildir:INDEX=/var/vmail/%u/shared/%%u > prefix = shared/%%n/ > separator = / > subscriptions = no > type = shared > } > namespace inbox { > inbox = yes > location = > mailbox "Deleted items" { > special_use = \Trash > } > mailbox Drafts { > special_use = \Drafts > } > mailbox Junk { > special_use = \Junk > } > mailbox Sent { > special_use = \Sent > } > mailbox "Sent items" { > special_use = \Sent > } > mailbox Trash { > special_use = \Trash > } > mailbox inbox { > auto = subscribe > } > prefix = > separator = / > type = private > } > passdb { > args = /etc/dovecot/deny.imap > deny = yes > driver = passwd-file > } > passdb { > args = /etc/dovecot/master-users > driver = passwd-file > master = yes > } > passdb { > args = /etc/dovecot/dovecot-ldap.conf.ext > driver = ldap > result_failure = return-fail > } > plugin { > acl = vfile > acl_shared_dict = file:/var/lib/dovecot/db/shared-mailboxes.db > mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename append > mail_log_fields = uid box msgid from subject > quota = maildir > quota_rule = ?:storage=5G > quota_rule2 = Trash:storage=+100M > quota_warning = storage=97%% quota-warning 97 %u > quota_warning2 = storage=95%% quota-warning 95 %u > quota_warning3 = storage=90%% quota-warning 90 %u > quota_warning4 = storage=85%% quota-warning 85 %u > quota_warning5 = storage=80%% quota-warning 80 %u > quota_warning6 = -storage=100%% quota-warning below %u > sieve = ~/.dovecot.sieve > sieve_default = /var/lib/dovecot/default.sieve > sieve_dir = ~/sieve > } > protocols = imap lmtp sieve > service auth { > unix_listener /var/spool/postfix/private/auth { > mode = 0666 > } > unix_listener auth-userdb { > group = vmail > mode = 0666 > user = vmail > } > } > service imap-login { > process_limit = 500 > process_min_avail = 2 > } > service quota-warning { > executable = script /usr/local/bin/quota-warning.sh > unix_listener quota-warning { > user = vmail > } > user = dovecot > } > service stats { > unix_listener stats-reader { > group = vmail > mode = 0660 > user = vmail > } > unix_listener stats-writer { > group = vmail > mode = 0660 > user = vmail > } > } > shutdown_clients = no > ssl = required > ssl_cert = </etc/ssl/letsencrypt/fullchain.pem > ssl_cipher_list = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384 > ssl_dh = # hidden, use -P to show it > ssl_key = # hidden, use -P to show it > ssl_min_protocol = TLSv1.2 > userdb { > args = uid=vmail gid=vmail home=/var/vmail/%n allow_all_users=yes > driver = static > } > userdb { > args = /etc/dovecot/dovecot-ldap.conf.ext > driver = ldap > } > verbose_proctitle = yes > protocol lda { > mail_plugins = acl lazy_expunge zlib quota mail_log notify sieve quota > } > protocol imap { > imap_max_line_length = 2 M > mail_max_userip_connections = 40 > mail_plugins = acl lazy_expunge zlib quota mail_log notify imap_quota imap_acl > } [View Less]

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dovecot-2.3.17: "Panic: file ioloop.c: line 865"
by Piper Andreas 14 Dec '21

14 Dec '21

Hello, since the upgrade from dovecot-2.3.16 to 2.3.17 I get 'Panic'-errors in the system-log of my replicator hosts. See below for log messages, doveconf-output and gdb-backtrace. Storage filesystem is ZFS. The error seems to be correlated with exactly one user-mailbox, this user is repeatedly noted as 'failed' in replication status, although replication of this mailbox seems to work, as the mailbox status shows always the identical size on both replicators. The error can be produced … [View More]by forcing replication of this individual mailbox. Is there anything I can do to repair this mailbox? Thanks for any hints, Andreas Example log-messages: Nov 11 07:17:50 vhrz311 dovecot: doveadm(119455): Error: write(<local>) failed: Timed out after 60 seconds Nov 11 07:17:50 vhrz311 dovecot: doveadm(119455): Panic: file ioloop.c: line 865 (io_loop_destroy): assertion failed: (ioloop == cur rent_ioloop) Nov 11 07:17:50 vhrz311 dovecot: doveadm(119455): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x42) [0x7 f4e59419182] -> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7f4e5941929e] -> /usr/lib/dovecot/libdovecot.so.0(+0xf8a5e) [0x7f4e59427a5e] -> /usr/lib/dovecot/libdovecot.so.0(+0xf8b01) [0x7f4e59427b01] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f 4e593744a7] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_destroy+0x2dc) [0x7f4e5944121c] -> dovecot/doveadm-server(+0x46fb6) [0x563d0 150ffb6] -> dovecot/doveadm-server(doveadm_print+0x27) [0x563d01508fb7] -> dovecot/doveadm-server(+0x2b427) [0x563d014f4427] -> dove cot/doveadm-server(+0x2da44) [0x563d014f6a44] -> dovecot/doveadm-server(doveadm_cmd_ver2_to_mail_cmd_wrapper+0x2cf) [0x563d014f7c6f] -> dovecot/doveadm-server(doveadm_cmd_run_ver2+0x43b) [0x563d01508c1b] -> dovecot/doveadm-server(+0x44612) [0x563d0150d612] -> /usr /lib/dovecot/libdovecot.so.0(io_loop_call_io+0x69) [0x7f4e594406d9] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal +0x134) [0x7f4e59442034] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x50) [0x7f4e594407e0] -> /usr/lib/dovecot/libdovec ot.so.0(io_loop_run+0x38) [0x7f4e59440a18] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f4e593a6a23] -> dovecot/ doveadm-server(main+0x102) [0x563d014e6922] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f4e58bc1bf7] -> dovecot/d oveadm-server(_start+0x2a) [0x563d014e69aa] Nov 11 07:17:50 vhrz311 dovecot: doveadm(119455): Fatal: master: service(doveadm): child 119455 killed with signal 6 (core dumped) 'doveconf -n': # 2.3.17 (e2aa53df5b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.17 (054dddfa) # OS: Linux 4.15.0-162-generic x86_64 Ubuntu 18.04.6 LTS # Hostname: vhrz311.HRZ.Uni-Marburg.DE auth_cache_negative_ttl = 0 auth_cache_size = 10 M auth_master_user_separator = * auth_worker_max_count = 1024 base_dir = /var/run/dovecot/ default_client_limit = 10000 default_vsz_limit = 6 G doveadm_password = # hidden, use -P to show it doveadm_port = 12345 first_valid_gid = 10000 first_valid_uid = 10000 imap_max_line_length = 640 k last_valid_gid = 10000 last_valid_uid = 10000 mail_attribute_dict = file:%h/mdbox/dovecot-attributes mail_gid = 10000 mail_location = mdbox:%h/mdbox mail_plugins = " mail_log notify zlib notify replication" mail_privileged_group = mail mail_uid = 10000 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 namespace inbox { hidden = no inbox = yes list = yes location = prefix = separator = / subscriptions = yes type = private } passdb { args = /etc/dovecot.deny deny = yes driver = passwd-file } passdb { args = /etc/dovecot/private/passwd.masterusers driver = passwd-file master = yes } passdb { args = /etc/dovecot/dovecot-ldap.hrz.conf.ext driver = ldap name = passdb_ldap_hrz } passdb { args = /etc/dovecot/dovecot-ldap.staff.conf.ext driver = ldap name = passdb_ldap_staff } passdb { args = /etc/dovecot/dovecot-ldap.students.conf.ext driver = ldap name = passdb_ldap_students } plugin { mail_replica = tcp:172.25.1.95 sieve = file:~/sieve;active=~/.dovecot.sieve sieve_default = /var/lib/dovecot/default.sieve sieve_max_actions = 55 sieve_max_redirects = 50 } pop3_uidl_format = %08Xv%08Xu postmaster_address = postmaster(a)hrz.uni-marburg.de protocols = imap pop3 lmtp sieve replication_dsync_parameters = -d -n INBOX -l 30 -U replication_max_conns = 20 service aggregator { fifo_listener replication-notify-fifo { user = vmail } unix_listener replication-notify { user = vmail } } service auth-worker { user = $default_internal_user } service auth { client_limit = 10000 } service config { process_min_avail = 8 } service doveadm { inet_listener { port = 12345 } vsz_limit = 6 G } service imap-login { process_min_avail = 64 service_count = 0 } service imap { process_limit = 8192 } service lmtp { inet_listener lmtp { port = 24 } } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 8 service_count = 0 } service pop3-login { process_min_avail = 8 service_count = 0 } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0600 user = vmail } } service submission-login { service_count = 0 } ssl = required ssl_ca = </etc/ssl/certs/umr-chain.pem ssl_cert = </etc/ssl/certs/vhrz311.hrz.uni-marburg.de.pem ssl_client_ca_dir = /etc/ssl/certs ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_require_crl = no userdb { args = /etc/dovecot/dovecot-ldap-userdb.conf.ext driver = ldap name = userdb_ldap } protocol imap { imap_metadata = yes mail_max_userip_connections = 25 mail_plugins = " mail_log notify zlib notify replication imap_zlib" } protocol lmtp { mail_plugins = " mail_log notify zlib notify replication sieve" } gdb: gdb /usr/lib/dovecot/doveadm-server /var/vmail/system-cores/core GNU gdb (Ubuntu 8.1.1-0ubuntu1) 8.1.1 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-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/doveadm-server...(no debugging symbols found)...done. [New LWP 119455] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `dovecot/doveadm-server'. Program terminated with signal SIGABRT, Aborted. #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 51 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory. (gdb) bt #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 #1 0x00007f4e58be0921 in __GI_abort () at abort.c:79 #2 0x00007f4e59427a11 in ?? () from /usr/lib/dovecot/libdovecot.so.0 #3 0x00007f4e59427b01 in ?? () from /usr/lib/dovecot/libdovecot.so.0 #4 0x00007f4e593744a7 in i_panic () from /usr/lib/dovecot/libdovecot.so.0 #5 0x00007f4e5944121c in io_loop_destroy () from /usr/lib/dovecot/libdovecot.so.0 #6 0x0000563d0150ffb6 in ?? () #7 0x0000563d01508fb7 in doveadm_print () #8 0x0000563d014f4427 in ?? () #9 0x0000563d014f6a44 in ?? () #10 0x0000563d014f7c6f in doveadm_cmd_ver2_to_mail_cmd_wrapper () #11 0x0000563d01508c1b in doveadm_cmd_run_ver2 () #12 0x0000563d0150d612 in ?? () #13 0x00007f4e594406d9 in io_loop_call_io () from /usr/lib/dovecot/libdovecot.so.0 #14 0x00007f4e59442034 in io_loop_handler_run_internal () from /usr/lib/dovecot/libdovecot.so.0 #15 0x00007f4e594407e0 in io_loop_handler_run () from /usr/lib/dovecot/libdovecot.so.0 #16 0x00007f4e59440a18 in io_loop_run () from /usr/lib/dovecot/libdovecot.so.0 #17 0x00007f4e593a6a23 in master_service_run () from /usr/lib/dovecot/libdovecot.so.0 #18 0x0000563d014e6922 in main () [View Less]

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Dovecot, Solr (FTS) and iOS body search
by Ben Howard 13 Dec '21

13 Dec '21

I had a question about full text search with Dovecot, Solr with iOS as a client (the built in default mail client). Does anyone happen to know if it's possible to get the iOS mail client to search bodies of email via IMAP with Dovecot and Solr on the server? I've looked at the IMAP queries being sent to Solr and regardless of iOS settings only the subject or to/cc/from seem to get queried. i.e.: test search query: Foobar Request [dovecot] webapp=/solr path=/select params={q={!lucene+q.op%… [View More]

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Re: 2.3.17: Panic on LMTP deliveries
by Volker ********* 13 Dec '21

13 Dec '21

It WORKS!!! :-) Great, thanks! Best regards Volker Am 12.12.2021 um 13:00 schrieb Volker: > That´s a good message, thank you very much! > > I will try the patch! > > Kind regards > Volker > > Am 12.12.2021 um 12:48 schrieb Aki Tuomi: >>>> Hello! >>>> >>>> While searching for an explanation for the fact that after updating to >>>> Dovecot 2.3.17_1 (FreeBSD 12.2) I suddenly stopped receiving emails and >>>> … [View More]

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Send to mailbox + alias??
by postfix＠aecperformance.com 12 Dec '21

12 Dec '21

Is there any way to set postfix/dovecot to: 1. Deliver email to the mailbox -> ie. bob(a)test.com <mailto:bob@test.com> AND 2. Set the email as an alias and send it to the forwarded address -> bobs.boss(a)bosses.com <mailto:bobs.boss@bosses.com> This would be given that both email accounts are set up as virtual_users in MySql. Right now if I set up an alias and mailbox for the same email the alias overrides the mailbox and the email is delivered to the forwarded … [View More]

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submission Connection failed: Failed to connect to remote server
by fugee ohu 12 Dec '21

12 Dec '21

I'm getting this error when I try to send mail mail dovecot: submission(username-here)<113012><tY+KjubSZJJHvuNn>: Debug: smtp-client: conn 127.0.0.1:25 [1]: Connection failed: Failed to connect to remote server

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Re[7]: Replicator bug report
by Daniel Miller 12 Dec '21

12 Dec '21

On 12/7/2021 12:29:49 PM, "Daniel Miller" <dmiller(a)amfes.com> wrote: >>service replicator { >> vsz_limit = 2G >>} >> >>Aki >> >Tried that - got another one. I just tried setting service replicator { vcsz_limit = 5G } and I still get: Dec 7 15:08:25 bubba dovecot: replicator: Panic: data stack: Out of memory when allocating 4294967336 bytes -- Daniel

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2.3.17: Panic on LMTP deliveries
by Volker 12 Dec '21

12 Dec '21

Hello! While searching for an explanation for the fact that after updating to Dovecot 2.3.17_1 (FreeBSD 12.2) I suddenly stopped receiving emails and following error messages appeared in the dovecot.log, /Error: lmtp-server: conn unix:uid=125 [1]: rcpt user(a)domain.tld: duplicate db: User user(a)domain.tld doesn't have home dir set, disabling duplicate database// // //Dec 12 08:42:54 lmtp(user(a)domain.tld)<80363><z7AxDf6ntWHrOQEAp6O1gg>: Panic: file imem.c: line 65 (i_strconcat):… [View More]

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