- dovecot - dovecot.org

SMTPUTF8 support
by sylvhem＠lepubdelobservateur.fr 05 Apr '19

05 Apr '19

Hi, I'm currently trying to set up SMTPUTF8 on my mail stack, but I can't find any information on Dovecot's RFC 6531 support. Has it been implemented yet? If so, does anyone know how to activate it? Regards. -- Sylvhem

4 5

Solr connection timeout hardwired to 60s
by Peter Mogensen 05 Apr '19

05 Apr '19

Hi, What's the recommended way to handling timeouts on large mailboxes given the hardwired request timeout of 60s in solr-connection.c: http_set.request_timeout_msecs = 60*1000; /Peter

5 5

doveadm backup + ISO 8859-1 mailbox name
by Michael Goth 04 Apr '19

04 Apr '19

Hi! I'm trying to migrate a mailbox from an old IMAP server (not Dovecot) to a new Dovecot server with 'doveadm backup'. The command fails because of an unexpected character in a mailbox name: doveadm -o imapc_user=ag(a)example.org \ -o imapc_password=XXX \ -o imapc_host=old-mailserver.webflow.de \ -o imapc_port=993 \ -o imapc_ssl=imaps \ -o imapc_ssl_verify=no \ -o imapc_features=rfc822.size,fetch-headers \ -o ssl_client_ca_dir=/etc/ssl \ backup -R -f -x ~* -u migration-ag(a)example.org imapc: dsync(migration-ag(a)example.org): Info: imapc(old-mailserver.webflow.de:993): Connected to 1.1.1.1:993 (local 2.2.2.2:46154) dsync(migration-ag(a)example.org): Error: Failed to access mailbox Entw?rfe: mailbox does not exist The problem is with "Entw?rfe" here. It's actually Entw<0xfc>rfe, which translates to "Entwürfe" in ISO-8859-1. Why can't doveadm find that mailbox? Is the old mailserver misbehaving (I hope not because I have no idea how to change that...), or does this happen on the new server? Can I tell doveadm something that makes this work? Thank you Michael -- Michael Goth .webflow GmbH Geschäftsführer: Andreas Schrei Wasserburger Straße 4 D - 83352 Altenmarkt a. d. Alz Amtsgericht Traunstein HRB 18537 E-Mail: mg(a)webflow.de Tel: +49 (0) 8621 - 99989 - 26 Fax: +49 (0) 8621 - 99989 - 28 Web: www.webflow.de

3 3

Autosubscribe to public folder
by Рустам 04 Apr '19

04 Apr '19

Hello everyone! I am trying to migrate from Dovecot 1.2 to Dovecot 2.2 and I can`t find information how to subscribe all users to public folder. In Dovecot 1.2 I have a few strings kind of "autosubscribeX = Public.Documents" and every users get subscribed to this Public folders and can`t unsubscribe. This is a goal. Is any posibility to make the same in Dovecot 2.2 or each user have to susbscribe to public folders themselves and this is kind of policy of Dovecot 2.2? -- С уважением, Рустам Багов.

2 1

TFA authentication in dovecot, using XMPP and RFC 4226
by André Rodier 03 Apr '19

03 Apr '19

Hello, I would like to implement some kind of two factors authentication, in Dovecot. I am thinking about using the post login script, to check for unusual behaviour, like say, a different country / IP address or an unusual hour. I already wrote a simple shell script that check these factors, but now, I have some options for the following, and I need to know your opinion if this is feasible or not. I want to use google authenticator Debian package (support the HMAC- Based One-time Password (HOTP) algorithm specified in RFC 4226 and the Time-based One-time Password (TOTP)) The challenge would be send via XMPP. This second part is fairly easy to do, I have all the packages on Debian, for instance sendxmpp. The first tests are promising. In case of success, the IP address is added to the list, let's say for one month... My back-end for authentication is OpenLDAP. My questions are: - Do you see any performance issues for other users or login processes, if I implement this? - I am planning to use a timeout, for instance one minute to confirm the connection. Does Dovecot have a timeout on its side, that would abort the connection before? Otherwise: - Is it possible to have multiple authentication back-ends in Dovecot? For instance LDAP and/or OTP? - I think to have seen some TFA options in Dovecot, but AFAICS, they are mandatory. Thanks for your insights, and this fabulous software. -- André Rodier HomeBox: https://github.com/progmaticltd/homebox

2 1

where shall I enforce sieve and quota plugins
by luckydog xf 03 Apr '19

03 Apr '19

Hello, guys, I'm going to using sieve and quota plugins, but I'm not sure where shall I enforce against properly? I see somebody uses them against 20-imap.conf, 15-lda.conf, or 20-lmtp.conf I use LMTP as MDA, so where is the correct location to call these plugins and why? Thanks,

2 1

Trying to track down source of duplicate messages
by Alex 02 Apr '19

02 Apr '19

Hi, I have a fedora28 system with dovecot-2.3.5 and I'm trying to figure out why I'm increasingly receiving duplicate emails. The message IDs are exactly the same. It's always two of the same messages. I don't think it's ever occurred in the inbox. It doesn't happen with every message or seemingly in every folder. I've read about dovecot deduplicate, but of course I want to prevent them from being duplicated in the first place. It's also happening much more frequently now. Could something in my configuration cause this problem? Below is the contents of my doveconf # 2.3.5 (513208660): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.5 (2483b085) # OS: Linux 4.20.11-100.fc28.x86_64 x86_64 Fedora release 28 (Twenty Eight) # Hostname: orion.inside.guardiandigital.com # NOTE: Send doveconf -n output instead when asking for help. auth_anonymous_username = anonymous auth_cache_negative_ttl = 1 hours auth_cache_size = 0 auth_cache_ttl = 1 hours auth_cache_verify_password_with_worker = no auth_debug = no auth_debug_passwords = no auth_default_realm = auth_failure_delay = 2 secs auth_gssapi_hostname = auth_krb5_keytab = auth_master_user_separator = auth_mechanisms = plain auth_policy_check_after_auth = yes auth_policy_check_before_auth = yes auth_policy_hash_mech = sha256 auth_policy_hash_nonce = auth_policy_hash_truncate = 12 auth_policy_log_only = no auth_policy_reject_on_fail = no auth_policy_report_after_auth = yes auth_policy_request_attributes = login=%{requested_username} pwhash=%{hashed_password} remote=%{rip} device_id=%{client_id} protocol=%s auth_policy_server_api_header = auth_policy_server_timeout_msecs = 2000 auth_policy_server_url = auth_proxy_self = auth_realms = auth_socket_path = auth-userdb auth_ssl_require_client_cert = no auth_ssl_username_from_cert = no auth_stats = no auth_use_winbind = no auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ auth_username_format = %Lu auth_username_translation = auth_verbose = no auth_verbose_passwords = no auth_winbind_helper_path = /usr/bin/ntlm_auth auth_worker_max_count = 30 base_dir = /var/run/dovecot config_cache_size = 1 M debug_log_path = default_client_limit = 1000 default_idle_kill = 1 mins default_internal_group = dovecot default_internal_user = dovecot default_login_user = dovenull default_process_limit = 100 default_vsz_limit = 256 M deliver_log_format = msgid=%m: %$ dict_db_config = director_flush_socket = director_mail_servers = director_max_parallel_kicks = 100 director_max_parallel_moves = 100 director_output_buffer_size = 10 M director_ping_idle_timeout = 30 secs director_ping_max_timeout = 1 mins director_servers = director_user_expire = 15 mins director_user_kick_delay = 2 secs director_username_hash = %u disable_plaintext_auth = yes dotlock_use_excl = yes doveadm_allowed_commands = doveadm_api_key = doveadm_http_rawlog_dir = doveadm_password = doveadm_port = 0 doveadm_socket_path = doveadm-server doveadm_username = doveadm doveadm_worker_count = 0 dsync_alt_char = _ dsync_commit_msgs_interval = 100 dsync_features = dsync_hashed_headers = Date Message-ID dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u -U first_valid_gid = 1 first_valid_uid = 500 haproxy_timeout = 3 secs haproxy_trusted_networks = hostname = imap_capability = imap_client_workarounds = imap_fetch_failure = disconnect-immediately imap_hibernate_timeout = 0 imap_id_log = imap_id_retain = no imap_id_send = name * imap_idle_notify_interval = 2 mins imap_literal_minus = no imap_logout_format = in=%i out=%o deleted=%{deleted} expunged=%{expunged} trashed=%{trashed} hdr_count=%{fetch_hdr_count} hdr_bytes=%{fetch_hdr_bytes} body_count=%{fetch_body_count} body_bytes=%{fetch_body_bytes} imap_max_line_length = 64 k imap_metadata = no imap_urlauth_host = imap_urlauth_logout_format = in=%i out=%o imap_urlauth_port = 143 imapc_cmd_timeout = 5 mins imapc_connection_retry_count = 1 imapc_connection_retry_interval = 1 secs imapc_features = imapc_host = imapc_list_prefix = imapc_master_user = imapc_max_idle_time = 29 mins imapc_max_line_length = 0 imapc_password = imapc_port = 143 imapc_rawlog_dir = imapc_sasl_mechanisms = imapc_ssl = no imapc_ssl_verify = yes imapc_user = import_environment = TZ CORE_OUTOFMEM CORE_ERROR LISTEN_PID LISTEN_FDS info_log_path = instance_name = dovecot last_valid_gid = 0 last_valid_uid = 0 lda_mailbox_autocreate = no lda_mailbox_autosubscribe = no lda_original_recipient_header = libexec_dir = /usr/libexec/dovecot listen = *, :: lmtp_hdr_delivery_address = final lmtp_proxy = no lmtp_proxy_rawlog_dir = lmtp_rawlog_dir = lmtp_rcpt_check_quota = no lmtp_save_to_detail_mailbox = no lmtp_user_concurrency_limit = 0 lock_method = fcntl log_core_filter = log_debug = log_path = syslog log_timestamp = "%b %d %H:%M:%S " login_access_sockets = login_greeting = Dovecot ready. login_log_format = %$: %s login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c session=<%{session}> login_plugin_dir = /usr/lib64/dovecot/login login_plugins = login_proxy_max_disconnect_delay = 0 login_proxy_notify_path = proxy-notify login_source_ips = login_trusted_networks = mail_access_groups = mail_always_cache_fields = mail_attachment_detection_options = mail_attachment_dir = mail_attachment_fs = sis posix mail_attachment_hash = %{sha1} mail_attachment_min_size = 128 k mail_attribute_dict = mail_cache_compress_continued_percentage = 200 mail_cache_compress_delete_percentage = 20 mail_cache_compress_header_continue_count = 4 mail_cache_compress_min_size = 32 k mail_cache_fields = flags mail_cache_min_mail_count = 0 mail_cache_record_max_size = 64 k mail_cache_unaccessed_field_drop = 30 days mail_chroot = mail_debug = no mail_fsync = optimized mail_full_filesystem_access = no mail_gid = mail mail_home = mail/ mail_index_log2_max_age = 2 days mail_index_log_rotate_max_size = 1 M mail_index_log_rotate_min_age = 5 mins mail_index_log_rotate_min_size = 32 k mail_index_rewrite_max_log_bytes = 128 k mail_index_rewrite_min_log_bytes = 8 k mail_location = mbox:~/mail:INBOX=/var/spool/mail/%u mail_log_prefix = "%s(%u)<%{pid}><%{session}>: " mail_max_keyword_length = 50 mail_max_lock_timeout = 0 mail_max_userip_connections = 500 mail_never_cache_fields = imap.envelope mail_nfs_index = no mail_nfs_storage = no mail_plugin_dir = /usr/lib64/dovecot mail_plugins = " listescape" mail_prefetch_count = 0 mail_privileged_group = mail mail_save_crlf = no mail_server_admin = mail_server_comment = mail_shared_explicit_inbox = no mail_sort_max_read_count = 0 mail_temp_dir = /tmp mail_temp_scan_interval = 1 weeks mail_uid = mail_vsize_bg_after_count = 0 mailbox_idle_check_interval = 30 secs mailbox_list_index = yes mailbox_list_index_include_inbox = no mailbox_list_index_very_dirty_syncs = no maildir_broken_filename_sizes = no maildir_copy_with_hardlinks = yes maildir_empty_new = no maildir_stat_dirs = no maildir_very_dirty_syncs = no managesieve_client_workarounds = managesieve_implementation_string = Dovecot Pigeonhole managesieve_logout_format = bytes=%i/%o managesieve_max_compile_errors = 5 managesieve_max_line_length = 65536 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 master_user_separator = mbox_dirty_syncs = yes mbox_dotlock_change_timeout = 2 mins mbox_lazy_writes = yes mbox_lock_timeout = 5 mins mbox_md5 = apop3d mbox_min_index_size = 0 mbox_read_locks = fcntl mbox_very_dirty_syncs = no mbox_write_locks = fcntl mdbox_preallocate_space = no mdbox_rotate_interval = 0 mdbox_rotate_size = 10 M mmap_disable = no namespace inbox { disabled = no hidden = no ignore_on_failure = no inbox = yes list = yes location = mailbox Drafts { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment = driver = special_use = \Drafts } mailbox Junk { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment = driver = special_use = \Junk } mailbox Sent { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment = driver = special_use = \Sent } mailbox "Sent Messages" { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment = driver = special_use = \Sent } mailbox Trash { auto = no autoexpunge = 0 autoexpunge_max_mails = 0 comment = driver = special_use = \Trash } order = 0 prefix = separator = subscriptions = yes type = private } old_stats_carbon_interval = 30 secs old_stats_carbon_name = old_stats_carbon_server = old_stats_command_min_time = 1 mins old_stats_domain_min_time = 12 hours old_stats_ip_min_time = 12 hours old_stats_memory_limit = 16 M old_stats_session_min_time = 15 mins old_stats_user_min_time = 1 hours passdb { args = auth_verbose = default default_fields = deny = no driver = pam master = no mechanisms = name = override_fields = pass = no result_failure = continue result_internalfail = continue result_success = return-ok skip = never username_filter = } passdb { args = auth_verbose = default default_fields = deny = no driver = pam master = no mechanisms = name = override_fields = pass = no result_failure = continue result_internalfail = continue result_success = return-ok skip = never username_filter = } pop3_client_workarounds = pop3_delete_type = default pop3_deleted_flag = pop3_enable_last = no pop3_fast_size_lookups = no pop3_lock_session = no pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_no_flag_updates = no pop3_reuse_xuidl = no pop3_save_uidl = no pop3_uidl_duplicates = allow pop3_uidl_format = %08Xu%08Xv pop3c_features = pop3c_host = pop3c_master_user = pop3c_password = pop3c_port = 110 pop3c_quick_received_date = no pop3c_rawlog_dir = pop3c_ssl = no pop3c_ssl_verify = yes pop3c_user = %u postmaster_address = postmaster@%{if;%d;ne;;%d;%{hostname}} protocols = imap pop3 quota_full_tempfail = no rawlog_dir = recipient_delimiter = + rejection_reason = Your message to <%t> was automatically rejected:%n%r rejection_subject = Rejected: %s replication_dsync_parameters = -d -N -l 30 -U replication_full_sync_interval = 1 days replication_max_conns = 10 replicator_host = replicator replicator_port = 0 sendmail_path = /usr/sbin/sendmail service aggregator { chroot = . client_limit = 0 drop_priv_before_exec = no executable = aggregator extra_groups = fifo_listener replication-notify-fifo { group = mode = 0600 user = } group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 0 type = unix_listener replication-notify { group = mode = 0600 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service anvil { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = anvil extra_groups = group = idle_kill = 4294967295 secs privileged_group = process_limit = 1 process_min_avail = 1 protocol = service_count = 0 type = anvil unix_listener anvil-auth-penalty { group = mode = 0600 user = } unix_listener anvil { group = mode = 0600 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service auth-worker { chroot = client_limit = 1 drop_priv_before_exec = no executable = auth -w extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 1 type = unix_listener auth-worker { group = mode = 0600 user = $default_internal_user } user = vsz_limit = 18446744073709551615 B } service auth { chroot = client_limit = 0 drop_priv_before_exec = no executable = auth extra_groups = group = idle_kill = 0 privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-client { group = mode = 0600 user = $default_internal_user } unix_listener auth-login { group = mode = 0600 user = $default_internal_user } unix_listener auth-master { group = mode = 0600 user = } unix_listener auth-userdb { group = mode = 0666 user = $default_internal_user } unix_listener login/login { group = mode = 0666 user = } unix_listener token-login/tokenlogin { group = mode = 0666 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service config { chroot = client_limit = 0 drop_priv_before_exec = no executable = config extra_groups = group = idle_kill = 4294967295 secs privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 0 type = config unix_listener config { group = mode = 0600 user = } user = vsz_limit = 18446744073709551615 B } service dict-async { chroot = client_limit = 0 drop_priv_before_exec = no executable = dict extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 0 type = unix_listener dict-async { group = $default_internal_group mode = 0660 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service dict { chroot = client_limit = 1 drop_priv_before_exec = no executable = dict extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 0 type = unix_listener dict { group = $default_internal_group mode = 0660 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service director { chroot = . client_limit = 0 drop_priv_before_exec = no executable = director extra_groups = fifo_listener login/proxy-notify { group = mode = 00 user = } group = idle_kill = 4294967295 secs privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener director-admin { group = mode = 0600 user = } unix_listener login/director { group = mode = 00 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service dns_client { chroot = client_limit = 1 drop_priv_before_exec = no executable = dns-client extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 0 type = unix_listener dns-client { group = mode = 0666 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service doveadm { chroot = client_limit = 1 drop_priv_before_exec = no executable = doveadm-server extra_groups = $default_internal_group group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 1 type = unix_listener doveadm-server { group = mode = 0600 user = } user = vsz_limit = 18446744073709551615 B } service imap-hibernate { chroot = client_limit = 0 drop_priv_before_exec = no executable = imap-hibernate extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = imap service_count = 0 type = unix_listener imap-hibernate { group = $default_internal_group mode = 0660 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service imap-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = imap-login extra_groups = group = idle_kill = 0 inet_listener imap { address = haproxy = no port = 0 reuse_port = no ssl = no } inet_listener imaps { address = haproxy = no port = 993 reuse_port = no ssl = yes } privileged_group = process_limit = 0 process_min_avail = 20 protocol = imap service_count = 0 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service imap-urlauth-login { chroot = token-login client_limit = 0 drop_priv_before_exec = no executable = imap-urlauth-login extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = imap service_count = 1 type = login unix_listener imap-urlauth { group = mode = 0666 user = } user = $default_login_user vsz_limit = 18446744073709551615 B } service imap-urlauth-worker { chroot = client_limit = 1 drop_priv_before_exec = no executable = imap-urlauth-worker extra_groups = $default_internal_group group = idle_kill = 0 privileged_group = process_limit = 1024 process_min_avail = 0 protocol = imap service_count = 1 type = unix_listener imap-urlauth-worker { group = mode = 0600 user = $default_internal_user } user = vsz_limit = 18446744073709551615 B } service imap-urlauth { chroot = client_limit = 1 drop_priv_before_exec = no executable = imap-urlauth extra_groups = group = idle_kill = 0 privileged_group = process_limit = 1024 process_min_avail = 0 protocol = imap service_count = 1 type = unix_listener token-login/imap-urlauth { group = mode = 0666 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service imap { chroot = client_limit = 1 drop_priv_before_exec = no executable = imap extra_groups = $default_internal_group group = idle_kill = 0 privileged_group = process_limit = 1024 process_min_avail = 0 protocol = imap service_count = 1 type = unix_listener imap-master { group = mode = 0600 user = } unix_listener login/imap { group = mode = 0666 user = } user = vsz_limit = 18446744073709551615 B } service indexer-worker { chroot = client_limit = 1 drop_priv_before_exec = no executable = indexer-worker extra_groups = $default_internal_group group = idle_kill = 0 privileged_group = process_limit = 10 process_min_avail = 0 protocol = service_count = 0 type = unix_listener indexer-worker { group = mode = 0600 user = $default_internal_user } user = vsz_limit = 18446744073709551615 B } service indexer { chroot = client_limit = 0 drop_priv_before_exec = no executable = indexer extra_groups = group = idle_kill = 0 privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener indexer { group = mode = 0666 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service ipc { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = ipc extra_groups = group = idle_kill = 0 privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener ipc { group = mode = 0600 user = $default_internal_user } unix_listener login/ipc-proxy { group = mode = 0600 user = $default_login_user } user = $default_internal_user vsz_limit = 18446744073709551615 B } service lmtp { chroot = client_limit = 1 drop_priv_before_exec = no executable = lmtp extra_groups = $default_internal_group group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = lmtp service_count = 0 type = unix_listener lmtp { group = mode = 0666 user = } user = vsz_limit = 18446744073709551615 B } service log { chroot = client_limit = 0 drop_priv_before_exec = no executable = log extra_groups = group = idle_kill = 4294967295 secs privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = log unix_listener log-errors { group = mode = 0600 user = } user = vsz_limit = 18446744073709551615 B } service managesieve-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = managesieve-login extra_groups = group = idle_kill = 0 inet_listener sieve { address = haproxy = no port = 4190 reuse_port = no ssl = no } privileged_group = process_limit = 0 process_min_avail = 0 protocol = sieve service_count = 1 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service managesieve { chroot = client_limit = 1 drop_priv_before_exec = no executable = managesieve extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = sieve service_count = 1 type = unix_listener login/sieve { group = mode = 0666 user = } user = vsz_limit = 18446744073709551615 B } service old-stats { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = old-stats extra_groups = fifo_listener old-stats-mail { group = mode = 0600 user = } fifo_listener old-stats-user { group = mode = 0600 user = } group = idle_kill = 4294967295 secs privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener old-stats { group = mode = 0600 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service pop3-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = pop3-login extra_groups = group = idle_kill = 0 inet_listener pop3 { address = haproxy = no port = 0 reuse_port = no ssl = no } inet_listener pop3s { address = 192.168.1.100 haproxy = no port = 995 reuse_port = no ssl = yes } privileged_group = process_limit = 0 process_min_avail = 0 protocol = pop3 service_count = 1 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service pop3 { chroot = client_limit = 1 drop_priv_before_exec = no executable = pop3 extra_groups = $default_internal_group group = idle_kill = 0 privileged_group = process_limit = 1024 process_min_avail = 0 protocol = pop3 service_count = 1 type = unix_listener login/pop3 { group = mode = 0666 user = } user = vsz_limit = 18446744073709551615 B } service replicator { chroot = client_limit = 0 drop_priv_before_exec = no executable = replicator extra_groups = group = idle_kill = 4294967295 secs privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener replicator-doveadm { group = mode = 00 user = $default_internal_user } unix_listener replicator { group = mode = 0600 user = $default_internal_user } user = vsz_limit = 18446744073709551615 B } service stats { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = stats extra_groups = group = idle_kill = 4294967295 secs privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener stats-reader { group = mode = 0600 user = } unix_listener stats-writer { group = $default_internal_group mode = 0660 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } service submission-login { chroot = login client_limit = 0 drop_priv_before_exec = no executable = submission-login extra_groups = group = idle_kill = 0 inet_listener submission { address = haproxy = no port = 587 reuse_port = no ssl = no } privileged_group = process_limit = 0 process_min_avail = 0 protocol = submission service_count = 1 type = login user = $default_login_user vsz_limit = 18446744073709551615 B } service submission { chroot = client_limit = 1 drop_priv_before_exec = no executable = submission extra_groups = $default_internal_group group = idle_kill = 0 privileged_group = process_limit = 1024 process_min_avail = 0 protocol = submission service_count = 1 type = unix_listener login/submission { group = mode = 0666 user = } user = vsz_limit = 18446744073709551615 B } shutdown_clients = yes ssl = yes ssl_alt_cert = ssl_alt_key = ssl_ca = ssl_cert = </etc/letsencrypt/fullchain.pem ssl_cert_username_field = commonName ssl_cipher_list = ALL:!LOW:!EXP:!aNULL:!RC4::!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS ssl_client_ca_dir = ssl_client_ca_file = ssl_client_cert = ssl_client_key = ssl_crypto_device = ssl_curve_list = ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_key_password = ssl_min_protocol = TLSv1 ssl_options = ssl_prefer_server_ciphers = yes ssl_require_crl = yes ssl_verify_client_cert = no state_dir = /var/lib/dovecot stats_writer_socket_path = stats-writer submission_client_workarounds = submission_host = submission_logout_format = in=%i out=%o submission_max_mail_size = 40 M submission_max_recipients = 0 submission_relay_command_timeout = 5 mins submission_relay_connect_timeout = 30 secs submission_relay_host = submission_relay_master_user = submission_relay_max_idle_time = 29 mins submission_relay_password = submission_relay_port = 25 submission_relay_rawlog_dir = submission_relay_ssl = no submission_relay_ssl_verify = yes submission_relay_trusted = no submission_relay_user = submission_ssl = no submission_timeout = 30 secs syslog_facility = mail userdb { args = auth_verbose = default default_fields = driver = passwd name = override_fields = result_failure = continue result_internalfail = continue result_success = return-ok skip = never } userdb { args = auth_verbose = default default_fields = driver = passwd name = override_fields = result_failure = continue result_internalfail = continue result_success = return-ok skip = never } valid_chroot_dirs = verbose_proctitle = no verbose_ssl = no version_ignore = no

4 4

ssl_min_protocol
by ＠lbutlr 02 Apr '19

02 Apr '19

What are the possible settings for ssl_min_protocol? I only see it on the upgrade page where it mentions the default is TLSv1. Searching on the dovecot page gives me "Your search query "ssl_min_protocol" didn't return any results." -- Up the airy mountains, down the rushy glen... From ghosties and bogles and long-leggity beasties... My mother said I never should... We dare not go a-hunting for fear... And things that go bump... Play with the fairies in the wood... --Lords and Ladies

2 1

sql table definitions
by Richard Hector 02 Apr '19

02 Apr '19

Hi all, Trivial question ... I'm using PostgreSQL for my auth db. I used the example CREATE TABLE statement in the config file, but now I find the fields are too short. I assume dovecot will be fine with 'text' type columns replacing the varchars? Or failing that, I can change the length of the varchar fields? Cheers, Richard

2 1

Issue with dovecot/director
by Nico Stöckigt 01 Apr '19

01 Apr '19

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hi, are there any known issues with dovecot/director (2.2.13) when receiving e-an mail with multiple receivers? In the given scenario the e-mail contains 3 recipients and is redirected by the director to 3 different mail servers (ox/dovecot @ UCS/univention). In this process the first 2 e-mails are just fine but the third e-mail is truncated somewhere in or after the header. Kind Regards Nico Stöckigt - -- Nico Stöckigt <stoeckigt(a)univention.de> Support Univention -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEoGjDpba412f0rm1CjVdPG/rdoykFAlyiPGoACgkQjVdPG/rd oyl+IRAAp11JHenIkDeonGV+tbj3nFF4RigPp85TiJmD2l/kddP5mMR/Bw+vMAc6 taHjfS4Myf6v+jCrn+FS+C2isZaassnqZF1JcyllT5RSvxzrSKl6ojf9vVl3jyfu gZ7RlVOqBqskSHkVsT4fmzFuGMRaTQBN7CtgQH3MXPcN477060WDiZ11x+w+2+be eI0hQID3X3CBRmhaYyXMsgwUCHF36dVYlzEnUy6yge2FuwgwonZASC9xueVQGN5b KYf66LmubJTERGo3XK7454s3jM6oEiz731Os7g/zHyd8X6fgpCaR1nre8x0xfe1I bz86GJzm3b+1Fme8++yxlGhTEERtNkw0znQG7LOw8fqY5ctD12kdxBgXQOgcLkjh 98zJD44wC8y9lRKfZ3Lydfq768U3D47AjmPY0u9Zp1YKdNS8PEsNk0iHaRn5ZpT0 0V+wfTTkh3jFFuaqqd0hgamwRuwkNfFNyGvNAd5x4nMUIGUZ1pI3ikGP8oGaLDMs iSo1YxXkUojZ9A2xMQ8bDbWLjpyj/YYw+Cs6t1QcP0h2HDATc7QrHMO02ajKXDW+ ZxsI4VvEplv4GhbMuhavRYhZk01fI1hdeV1+PvkcAsqxaljoJDSyqZP78A81f7F4 DWComweyk/k+BzLjiQPKhv7AjaXnjDVeJfVxLl8VYoW4jD/4aFc= =MGL8 -----END PGP SIGNATURE-----

2 3

mail_crypt not working on incoming messages?
by Dave 01 Apr '19

01 Apr '19

[Dovecot v2.2.33.2] I'm testing out mail_crypt on a fresh Dovecot install to get a feel for how it works, but I'm running into something unexpected. The mail_crypt plugin does seem to be working, but NOT on incoming email. What I mean is, if I send a test email to the server that has Dovecot installed, the message correctly arrives in the user's Maildir folder (I'm using Maildir format, not mbox), as I can see the mail message file appear. However, the message file is in plaintext and is not encrypted. But, if, using my Thunderbird email client connected to that account via IMAP, I move that message out of the inbox of that account to a folder on another account, and then move it back in to the original inbox, the file that appears in the Maildir folder structure IS encrypted. I have confirmed that mail_crypt is active in 10-mail.conf, 20-imap.conf, and 20-pop3.conf. The global public and private keys are working because (a) there are no errors and (b) it DOES encrypt -- just not on incoming email. mail_crypt_save_version is set 2, as per the docs for Dovecot 2 instruct. What am I missing? Does anyone have any thoughts as to why JUST incoming messages aren't encrypted, but that messages moved into the IMAP account DO get encrypted? Did I set up something incorrectly? I'm using sendmail as the MTA, if that matters, and messages are routed to the user's Maildir folder structure using a .procmailrc in that user's home folder. -Dave

2 3

dovecot ssl error message from my own connections
by Esteban L 01 Apr '19

01 Apr '19

Hello all, Just a minor thing. Not a big deal, because everything works fine, and I feel secure with my setup. But, I get this error message pretty much throughout the day/night, which appears to come from my own mail clients (desktop or mobile). I would like to resolve it, because it must me something (that is not good--that I may not understand), that may have other ramifications. So, here it is. date time myserver dovecot: imap-login: Debug: SSL error: SSL_read() syscall failed: Connection reset by peer Anyone have a suggestion of what this might hint to, other than obvious SSL. I tried parsing through various logs, but the most I find is just this single line. I can produce it, whenever I close my email client. Thanks in advance.

4 5

Possible bug with last_login plugin and PostgreSQL
by Zhang Huangbin 01 Apr '19

01 Apr '19

Dear all, I'm trying to get last_login plugin working with PostgreSQL, but seems Dovecot doesn't handle duplicate key while updating last login time (note: same setting works fine with MariaDB). I wonder whether it's a bug of Dovecot or i should handle this with PostgreSQL trigger. OS: OpenBSD 6.4 (amd64) Dovecot: 2.2.36 PostgreSQL: 10.5 Error log: ################### Mar 31 11:15:21 ob dovecot: imap-login: Login: user=<postmaster(a)a.io>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=5936, TLS, session=<63/jV2CFhzt/AAAB> Mar 31 11:15:21 ob dovecot: imap(postmaster(a)a.io): Logged out in=300 out=1604 Mar 31 11:15:21 ob dovecot: imap-login: Login: user=<postmaster(a)a.io>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=29797, TLS, session=<lLboV2CFuZ9/AAAB> Mar 31 11:15:21 ob dovecot: dict(9584): Error: sql dict: commit failed: ERROR: duplicate key value violates unique constraint "last_login_pkey" Mar 31 11:15:21 ob dovecot: dict: Error: DETAIL: Key (username)=(postmaster(a)a.io) already exists. Mar 31 11:15:21 ob dovecot: imap(postmaster(a)a.io): Error: dict-client: server returned failure: 1554023721 (reply took 0.012 secs) Mar 31 11:15:21 ob dovecot: imap(postmaster(a)a.io): Error: last_login_dict: Failed to write value for user postmaster(a)a.io Mar 31 11:15:21 ob dovecot: imap(postmaster(a)a.io): Logged out in=70 out=732 ################## My Dovecot config: ################### protocol imap { mail_plugins = ... last_login ... } protocol pop3 { mail_plugins = ... last_login ... } plugin { last_login_dict = proxy::lastlogin #last_login_key = last-login/%u ... } dict { lastlogin = pgsql:/etc/dovecot/dovecot-last-login.conf ... } ################### SQL commands used to create PostgreSQL table: ########### CREATE TABLE last_login ( username VARCHAR(255) NOT NULL, last_login INT DEFAULT NULL, PRIMARY KEY (username) ); ########### File /etc/dovecot/dovecot-last-login.conf: ########### connect = host=127.0.0.1 port=5432 dbname=vmail user=vmailadmin password=<password> map { pattern = shared/last-login/$user table = last_login value_field = last_login value_type = uint fields { username = $user } } ##############

1 1

I have a question.
by 김태용 01 Apr '19

01 Apr '19

Hi. I have a question. Can I limit the maximum number of messages I can sync per mailbox? Even if there are 10000 messages, I want to sync with the specified number of times. Ex)max sync mail count = 5000 (or 1000 or 2000..Outlook view message 5000) Thank you.

2 2

CentOS Repository broken ?
by Günther J. Niederwimmer 01 Apr '19

01 Apr '19

Hello, I have a CentOS 7 server with dovecot Repository enabled. But it is not possible to Update with Yum Update I have this Error? The dovecot package is missing? --> Transaktionsprüfung wird ausgeführt ---> Paket dovecot-imaptest.x86_64 2:2.3.5-1 markiert, um aktualisiert zu werden ---> Paket dovecot-imaptest.x86_64 2:2.3.5.1-1 markiert, um eine Aktualisierung zu werden --> Abhängigkeit dovecot = 2:2.3.5.1-1 wird für Paket 2:dovecot- imaptest-2.3.5.1-1.x86_64 verarbeitet ---> Paket dovecot-lua.x86_64 2:2.3.5-1 markiert, um aktualisiert zu werden ---> Paket dovecot-lua.x86_64 2:2.3.5.1-1 markiert, um eine Aktualisierung zu werden --> Abhängigkeit dovecot = 2:2.3.5.1-1 wird für Paket 2:dovecot- lua-2.3.5.1-1.x86_64 verarbeitet --> Abhängigkeitsauflösung beendet Fehler: Paket: 2:dovecot-imaptest-2.3.5.1-1.x86_64 (dovecot-2.3-latest) Benötigt: dovecot = 2:2.3.5.1-1 Installiert: 2:dovecot-2.3.5-1.x86_64 (installed) dovecot = 2:2.3.5-1 Verfügbar: 1:dovecot-2.2.36-3.el7.i686 (base) dovecot = 1:2.2.36-3.el7 Fehler: Paket: 2:dovecot-lua-2.3.5.1-1.x86_64 (dovecot-2.3-latest) Benötigt: dovecot = 2:2.3.5.1-1 Installiert: 2:dovecot-2.3.5-1.x86_64 (installed) dovecot = 2:2.3.5-1 Verfügbar: 1:dovecot-2.2.36-3.el7.i686 (base) dovecot = 1:2.2.36-3.el7 Thanks for repair. -- mit freundliche Grüßen / best regards, Günther J. Niederwimmer

5 12

Why is 'sent' folder missing in my MUA(email client)
by luckydog xf 31 Mar '19

31 Mar '19

hello, I'm successfully send and receive emails by postfix and dovecot, but folder name 'Sent' is gone, all sent emails are located in Drafts folder. Anything wrong? Guess it has something to do with mailbox and location. Here is `doveconf -n` ------------------ auth_cache_size = 1 M auth_debug_passwords = yes auth_mechanisms = plain login auth_ssl_username_from_cert = yes auth_verbose = yes auth_verbose_passwords = yes import_environment = TZ login_trusted_networks = 172.16.0.0/12 mail_location = maildir:/var/mail/%n/Maildir 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 { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } protocols = imap lmtp service auth-worker { user = $default_internal_user } service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } } service lmtp { unix_listener lmtp { mode = 0666 } } service pop3-login { inet_listener pop3 { port = 110 } } ssl = required ssl_cert = </etc/ssl/certs/dovecot.pem ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { driver = prefetch } userdb { args = uid=mail gid=mail home=/var/mail/%u driver = static } verbose_proctitle = yes ----- I also checked mail dir, it has /var/mail/XXX/Maildir/.send/ So anything wrong? Thanks,

1 1

Attachment indicator
by azurit＠pobox.sk 29 Mar '19

29 Mar '19

Hi, if i use 'doveadm rebuild attachments' command with maildir mailboxes, will anything happen to files with emails? For example, will file name change? Or better, will anything, which could trigger data backup, happen to files containing emails? Thanks. azur

1 0

configuring Dovecot with wforced and auth_policy_server_url with https results in assertion failed
by Robert Kudyba 29 Mar '19

29 Mar '19

dovecot-2.3.3-1.fc29.x86_64 Mar 28 10:04:47 auth: Panic: file http-client-request.c: line 283 (http_client_request_unref): assertion failed: (req->refcount > 0) Mar 28 10:04:47 auth: Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(+0xe34fb) [0x7fe76e0834fb] -> /usr/lib64/dovecot/libdovecot.so.0(+0xe3597) [0x7fe76e083597] -> /usr/lib64/dovecot/libdovecot.so.0(+0x51207) [0x7fe76dff1207] -> /usr/lib64/dovecot/libdovecot.so.0(+0x4972b) [0x7fe76dfe972b] -> /usr/lib64/dovecot/libdovecot.so.0(http_client_request_destroy+0x107) [0x7fe76e02cf87] -> /usr/lib64/dovecot/libdovecot.so.0(http_client_deinit+0x4c) [0x7fe76e03b9ec] -> dovecot/auth(auth_policy_deinit+0x1e) [0x55facfdb350e] -> dovecot/auth(main+0x3e1) [0x55facfdae3c1] -> /lib64/libc.so.6(__libc_start_main+0xf3) [0x7fe76dd93413] -> dovecot/auth(_start+0x2e) [0x55facfdae57e] Mar 28 10:04:47 auth: Fatal: master: service(auth): child 31162 killed with signal 6 (core not dumped - https://dovecot.org/bugreport.html#coredumps - set /proc/sys/fs/suid_dumpable to 2) Mar 28 10:04:48 master: Info: Dovecot v2.3.3 (dcead646b) starting up for imap, pop3

2 9

Fwd: segfault in libdovecot-storage at unknown circumstances
by sergio 29 Mar '19

29 Mar '19

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=925961 -------- Forwarded Message -------- Subject: segfault in libdovecot-storage at unknown circumstances Date: Fri, 29 Mar 2019 16:34:15 +0300 From: sergio <sergio+it(a)outerface.net> To: Debian Bug Tracking System <submit(a)bugs.debian.org> Package: dovecot-core Version: 1:2.3.4.1-1~bpo9+1 Severity: normal Yes, I know this is not very informative. I've already set ALLOW_COREDUMPS to 1 in /etc/default/dovecot and waiting for the next fault. % grep segfa kern.log* kern.log.1: Mar 17 13:27:09 mail kernel: [118616.482998] imap[31111]: segfault at 8 ip 00007efbff924cbb sp 00007fff0b333890 error 4 in libdovecot-storage.so.0.0.0[7efbff858000+145000] % zgrep segfa kern.log*gz kern.log.2.gz:Mar 15 01:51:07 mail kernel: [1691560.449110] imap[8329]: segfault at 8 ip 00007ff38ae2390e sp 00007ffcd3317640 error 4 kern.log.2.gz:Mar 15 01:51:07 mail kernel: [1691560.449117] imap[8380]: segfault at 8 ip 00007fea0c1c890e sp 00007ffdc7607150 error 4 in libdovecot-storage.so.0.0.0[7fea0c10d000+12c000] kern.log.2.gz:Mar 15 01:51:07 mail kernel: [1691560.449438] imap[8371]: segfault at 8 ip 00007f4775b0490e sp 00007ffce2814cc0 error 4 in libdovecot-storage.so.0.0.0[7f4775a49000+12c000] kern.log.2.gz:Mar 15 01:51:07 mail kernel: [1691560.461685] imap[2435]: segfault at 8 ip 00007fa8cb0ab90e sp 00007ffc4185e130 error 4 in libdovecot-storage.so.0.0.0[7fa8caff0000+12c000] kern.log.3.gz:Mar 13 02:35:33 mail kernel: [1521426.802606] imap[11824]: segfault at 8 ip 00007fa1b95d290e sp 00007ffd935de700 error 4 kern.log.3.gz:Mar 13 02:35:33 mail kernel: [1521426.802614] imap[11827]: segfault at 8 ip 00007f1afe53490e sp 00007fffbeb753d0 error 4 in libdovecot-storage.so.0.0.0[7f1afe479000+12c000] kern.log.3.gz:Mar 13 02:35:33 mail kernel: [1521426.802983] imap[11837]: segfault at 8 ip 00007f70b5c9b90e sp 00007ffd7f80bc80 error 4 in libdovecot-storage.so.0.0.0[7f70b5be0000+12c000] % grep 'signal 11' mail.err* mail.err.1: Mar 17 13:27:09 mail dovecot: imap(sergio)<31111><lLOIej6EEN1Pht53>: Fatal: master: service(imap): child 31111 killed with signal 11 (core dumps disabled - https://dovecot.org/bugreport.html#coredumps) % zgrep 'signal 11' mail.err* mail.err.1:Mar 17 13:27:09 mail dovecot: imap(sergio)<31111><lLOIej6EEN1Pht53>: Fatal: master: service(imap): child 31111 killed with signal 11 (core dumps disabled - https://dovecot.org/bugreport.html#coredumps) mail.err.2.gz:Mar 15 01:51:07 mail dovecot: imap(sergio): Fatal: master: service(imap): child 8371 killed with signal 11 (core dumps disabled) mail.err.2.gz:Mar 15 01:51:07 mail dovecot: imap(sergio): Fatal: master: service(imap): child 8380 killed with signal 11 (core dumps disabled) mail.err.2.gz:Mar 15 01:51:07 mail dovecot: imap(sergio): Fatal: master: service(imap): child 8329 killed with signal 11 (core dumps disabled) mail.err.2.gz:Mar 15 01:51:07 mail dovecot: imap(sergio): Fatal: master: service(imap): child 2435 killed with signal 11 (core dumps disabled) mail.err.3.gz:Mar 13 02:35:33 mail dovecot: imap(sergio): Fatal: master: service(imap): child 11827 killed with signal 11 (core dumps disabled) mail.err.3.gz:Mar 13 02:35:33 mail dovecot: imap(sergio): Fatal: master: service(imap): child 11837 killed with signal 11 (core dumps disabled) mail.err.3.gz:Mar 13 02:35:33 mail dovecot: imap(sergio): Fatal: master: service(imap): child 11824 killed with signal 11 (core dumps disabled) % s dovecot -n # 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.4 () doveconf: Warning: service auth { client_limit=1000 } is lower than required under max. load (1324) doveconf: Warning: service anvil { client_limit=1000 } is lower than required under max. load (1227) # OS: Linux 4.9.0-8-amd64 x86_64 Debian 9.8 ext4 # Hostname: mail.outerface.net auth_verbose = yes lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes lmtp_rcpt_check_quota = yes lmtp_save_to_detail_mailbox = yes mail_home = /var/mail/%u mail_location = sdbox:/var/mail/%u mail_plugins = quota fts virtual mail_privileged_group = mail 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 spamtest spamtestplus namespace { location = virtual:~/mailboxes/virtual prefix = virtual/ separator = / } 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 Spam { special_use = \Junk } mailbox Trash { special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { fts_autoindex = yes quota = count:User quota quota_grace = 10%% quota_rule = *:storage=2G quota_vsizes = yes sieve = file:~/sieve;active=~/.dovecot.sieve sieve_extensions = +spamtest +spamtestplus sieve_global = /etc/dovecot/sieve/ sieve_spamtest_max_value = 120 sieve_spamtest_status_header = X-Spam_score_int sieve_spamtest_status_type = score } protocols = " imap lmtp sieve" service auth-worker { user = $default_internal_user } service auth { unix_listener auth-client { mode = 0666 user = mail } } service imap-login { inet_listener imaps { port = 0 } process_limit = 1024 service_count = 1 vsz_limit = 64 M } service imap { process_limit = 1024 } ssl = required ssl_cert = </etc/ssl/localcerts/outerface.net-cert.pem ssl_cipher_list = ECDHE-ECDSA-AES256-GCM-SHA384 ssl_client_ca_dir = /etc/ssl/certs ssl_key = # hidden, use -P to show it ssl_min_protocol = TLSv1.2 userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lmtp { mail_fsync = optimized mail_plugins = quota fts virtual sieve } protocol lda { mail_fsync = optimized } protocol imap { mail_max_userip_connections = 128 mail_plugins = quota fts virtual imap_zlib quota } -- sergio.

1 0

Purges now happen 5 times faster
by Steve Litt 29 Mar '19

29 Mar '19

Hi all, I use Claws-Mail to look inside my local (same metal) Dovecot server. All incoming mail is dumped into Dovecot folders via procmail. All of a sudden today, mass purges of "marked for delete" happen about 5 times faster. The process used to be a significant productivity destroyer, but now is easy to work with. In other words, it's a good thing, but until I know why this happened, I'll have that little voice inside telling me there's some evil side effect somewhere. Does anybody know any reason this should have happened? I'm using Dovecot 2.3.5 (513208660) and Claws-Mail 3.17.3. Thanks, SteveT

1 0

v2.2.27 Panic: file rfc822-parser.h: line 23 (rfc822_parser_deinit): assertion failed: (ctx->data <= ctx->end)
by Jason Lewis 29 Mar '19

29 Mar '19

Hi, I've been having an issue with the indexer giving me errors on mailbox in dovecot. I managed to narrow it down to a specific email in that mailbox. Various dovecot functions have issues with this email. The email itself is just spam. I can email it to you if you want to analyse it. I did run it through mbox-anonymize but its not clear to me that that would be of any use. Happy to email the suspect email privately to anyone who wants it. /home is mounted nfs4 and is zfs on the nfs server. Dovecot is installed from Debian Jessie. $ /usr/sbin/dovecot --version 2.2.27 (c0f36b0) dovecot-core: Installed: 1:2.2.27-3+deb9u2~bpo8+1 Candidate: 1:2.2.27-3+deb9u2~bpo8+1 Version table: *** 1:2.2.27-3+deb9u2~bpo8+1 0 100 /var/lib/dpkg/status 1:2.2.13-12~deb8u5 0 400 http://security.debian.org/ jessie/updates/main amd64 Packages 1:2.2.13-12~deb8u4 0 400 http://deb.debian.org/debian/ jessie/main amd64 Packages ~# dovecot -n # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: Linux 4.9.0-0.bpo.6-amd64 x86_64 Debian 8.10 imap_hibernate_timeout = 5 secs mail_location = maildir:~/Maildir mail_plugins = fts fts_solr mailbox_list_index = 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 = } passdb { driver = pam } plugin { fts = solr fts_autoindex = yes fts_enforced = yes fts_solr = url=http://10.0.2.19:8080/solr/ imapsieve_mailbox1_before = file:/etc/dovecot/train-as-spam.sieve imapsieve_mailbox1_causes = COPY imapsieve_mailbox1_name = Junk imapsieve_mailbox2_before = file:/etc/dovecot/train-as-ham.sieve imapsieve_mailbox2_causes = COPY imapsieve_mailbox2_from = Junk imapsieve_mailbox2_name = * sieve = file:~/sieve;active=~/.dovecot.sieve sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment sieve_pipe_bin_dir = /usr/bin sieve_plugins = sieve_imapsieve sieve_extprograms } protocols = " imap" service anvil { client_limit = 1127 } service auth { client_limit = 2200 unix_listener /var/spool/postfix/private/auth { mode = 0666 } } service imap-hibernate { unix_listener imap-hibernate { group = dovecot mode = 0660 } } service imap-login { process_limit = 1024 process_min_avail = 12 service_count = 0 vsz_limit = 1 G } service imap { extra_groups = dovecot unix_listener imap-master { user = dovecot } } ssl_cert = </etc/letsencrypt/live/imap.organictrader.com.au/fullchain.pem ssl_key = # hidden, use -P to show it userdb { driver = passwd } protocol imap { mail_max_userip_connections = 20 mail_plugins = fts fts_solr imap_sieve } jason@debian:~$ doveadm -D -f flow fetch imap.envelope mailbox crm-spam.2008.g Debug: Loading modules from directory: /usr/lib/dovecot/modules Debug: Module loaded: /usr/lib/dovecot/modules/lib20_fts_plugin.so Debug: Module loaded: /usr/lib/dovecot/modules/lib21_fts_solr_plugin.so Debug: Loading modules from directory: /usr/lib/dovecot/modules/doveadm Debug: Skipping module doveadm_acl_plugin, because dlopen() failed: /usr/lib/dovecot/modules/doveadm/lib10_doveadm_acl_plugin.so: undefined symbol: acl_user_module (this is usually intentional, so just ignore this message) Debug: Skipping module doveadm_expire_plugin, because dlopen() failed: /usr/lib/dovecot/modules/doveadm/lib10_doveadm_expire_plugin.so: undefined symbol: expire_set_deinit (this is usually intentional, so just ignore this message) Debug: Skipping module doveadm_quota_plugin, because dlopen() failed: /usr/lib/dovecot/modules/doveadm/lib10_doveadm_quota_plugin.so: undefined symbol: quota_user_module (this is usually intentional, so just ignore this message) Debug: Module loaded: /usr/lib/dovecot/modules/doveadm/lib10_doveadm_sieve_plugin.so Debug: Skipping module doveadm_fts_lucene_plugin, because dlopen() failed: /usr/lib/dovecot/modules/doveadm/lib20_doveadm_fts_lucene_plugin.so: undefined symbol: lucene_index_iter_deinit (this is usually intentional, so just ignore this message) Debug: Module loaded: /usr/lib/dovecot/modules/doveadm/lib20_doveadm_fts_plugin.so Debug: Skipping module doveadm_mail_crypt_plugin, because dlopen() failed: /usr/lib/dovecot/modules/doveadm/libdoveadm_mail_crypt_plugin.so: undefined symbol: mail_crypt_box_get_pvt_digests (this is usually intentional, so just ignore this message) doveadm(jason): Debug: Effective uid=1000, gid=1000, home=/home/jason doveadm(jason): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/Maildir doveadm(jason): Debug: maildir++: root=/home/jason/Maildir, index=, indexpvt=, control=, inbox=/home/jason/Maildir, alt= doveadm(jason): Debug: Namespace : Using permissions from /home/jason/Maildir: mode=0700 gid=default doveadm(jason): Debug: Mailbox crm-spam.2008.g: Opened mail UID=38 because: 1/10 headers not cached (first=Sender) (Mail has other cached fields, reset_id=1553472765) doveadm(jason): Panic: file rfc822-parser.h: line 23 (rfc822_parser_deinit): assertion failed: (ctx->data <= ctx->end) doveadm(jason): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x989ae) [0x7f170b1389ae] -> /usr/lib/dovecot/libdovecot.so.0(+0x98a28) [0x7f170b138a28] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f170b0ce67e] -> /usr/lib/dovecot/libdovecot.so.0(+0x7c97d) [0x7f170b11c97d] -> /usr/lib/dovecot/libdovecot.so.0(message_address_parse+0x55) [0x7f170b11c9e5] -> /usr/lib/dovecot/libdovecot.so.0(imap_envelope_parse_header+0x144) [0x7f170b110374] -> /usr/lib/dovecot/libdovecot-storage.so.0(index_mail_parse_header+0xfe) [0x7f170b47422e] -> /usr/lib/dovecot/libdovecot.so.0(+0x7979f) [0x7f170b11979f] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x53) [0x7f170b1437e3] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x3d) [0x7f170b14422d] -> /usr/lib/dovecot/libdovecot.so.0(message_parse_header_next+0x72) [0x7f170b11f3d2] -> /usr/lib/dovecot/libdovecot.so.0(message_parse_header+0x4f) [0x7f170b11fd7f] -> /usr/lib/dovecot/libdovecot-storage.so.0(index_mail_headers_get_envelope+0x138) [0x7f170b475448] -> /usr/lib/dovecot/libdovecot-storage.so.0(index_mail_get_special+0x1a1) [0x7f170b4796c1] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x69dd3) [0x7f170b42fdd3] -> /usr/lib/dovecot/libdovecot-storage.so.0(mail_get_special+0xd) [0x7f170b400a8d] -> /usr/bin/doveadm(+0x2dca8) [0x562378dd4ca8] -> /usr/bin/doveadm(+0x2ed7e) [0x562378dd5d7e] -> /usr/bin/doveadm(+0x2a57c) [0x562378dd157c] -> /usr/bin/doveadm(+0x2b0da) [0x562378dd20da] -> /usr/bin/doveadm(doveadm_cmd_ver2_to_mail_cmd_wrapper+0x21f) [0x562378dd2f5f] -> /usr/bin/doveadm(doveadm_cmd_run_ver2+0x560) [0x562378de2390] -> /usr/bin/doveadm(doveadm_cmd_try_run_ver2+0x37) [0x562378de23e7] -> /usr/bin/doveadm(main+0x1e4) [0x562378dc1f44] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f170ad16b45] -> /usr/bin/doveadm(+0x1b32c) [0x562378dc232c] Aborted (core dumped) jason@debian:~$ gdb /usr/bin/doveadm /home/jason/core GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1 Copyright (C) 2014 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/bin/doveadm...(no debugging symbols found)...done. [New LWP 22454] Core was generated by `/usr/bin/doveadm -D -f flow fetch imap.envelope mailbox crm-spam.2008.g'. Program terminated with signal SIGABRT, Aborted. #0 0x00007f170ad2a067 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 56 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory. (gdb) bt full #0 0x00007f170ad2a067 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 resultvar = 0 pid = 22454 selftid = 22454 #1 0x00007f170ad2b448 in __GI_abort () at abort.c:89 save_stage = 2 act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {1024, 94710351668199, 94710351535940, 139736942472005, 94710351536940, 0, 94710367714600, 513, 13251895700223756544, 94710367714600, 139736946974659, 94710367714600, 140734907147216, 4294967040, 139736946975017, 94710367714600}}, sa_flags = 185808618, sa_restorer = 0x7fff6625e401} sigs = {__val = {32, 0 <repeats 15 times>}} #2 0x00007f170b1389a6 in ?? () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #3 0x00007f170b138a28 in default_fatal_handler () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #4 0x00007f170b0ce67e in i_panic () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #5 0x00007f170b11c97d in ?? () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #6 0x00007f170b11c9e5 in message_address_parse () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #7 0x00007f170b110374 in imap_envelope_parse_header () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #8 0x00007f170b47422e in index_mail_parse_header () from /usr/lib/dovecot/libdovecot-storage.so.0 No symbol table info available. #9 0x00007f170b11979f in ?? () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #10 0x00007f170b1437e3 in i_stream_read () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #11 0x00007f170b14422d in i_stream_read_data () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #12 0x00007f170b11f3d2 in message_parse_header_next () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #13 0x00007f170b11fd7f in message_parse_header () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #14 0x00007f170b475448 in index_mail_headers_get_envelope () from /usr/lib/dovecot/libdovecot-storage.so.0 No symbol table info available. #15 0x00007f170b4796c1 in index_mail_get_special () from /usr/lib/dovecot/libdovecot-storage.so.0 No symbol table info available. #16 0x00007f170b42fdd3 in ?? () from /usr/lib/dovecot/libdovecot-storage.so.0 No symbol table info available. ---Type <return> to continue, or q <return> to quit--- #17 0x00007f170b400a8d in mail_get_special () from /usr/lib/dovecot/libdovecot-storage.so.0 No symbol table info available. #18 0x0000562378dd4ca8 in ?? () No symbol table info available. #19 0x0000562378dd5d7e in ?? () No symbol table info available. #20 0x0000562378dd157c in ?? () No symbol table info available. #21 0x0000562378dd20da in ?? () No symbol table info available. #22 0x0000562378dd2f5f in doveadm_cmd_ver2_to_mail_cmd_wrapper () No symbol table info available. #23 0x0000562378de2390 in doveadm_cmd_run_ver2 () No symbol table info available. #24 0x0000562378de23e7 in doveadm_cmd_try_run_ver2 () No symbol table info available. #25 0x0000562378dc1f44 in main () No symbol table info available. (gdb) -- Jason Lewis http://emacstragic.net

5 9

Apparmor problem
by Ervin Hegedüs 28 Mar '19

28 Mar '19

Hi there, I know this isn't a Dovecot issue, but hope that somebody can helps me. I've successfully installed and configured Dovecot to a Debian 9 server. Looks like everything works as well, I just see a line in the log when I send a mail: Mar 28 22:21:47 mailng kernel: [3150146.825007] audit: type=1400 audit(1553808107.757:286204): apparmor="DENIED" operation="open" profile="/usr/lib/dovecot/dovecot-lda" name="/usr/share/dovecot/protocols.d/" pid=26197 comm="doveconf" requested_mask="r" denied_mask="r" fsuid=5000 ouid=0 The /usr/share/dovecot/protocols.d/ directory and its content (.../protocols.d/**) set up in usr.lib.dovecot.dovecot-lda apparmor profile with mask "r", but this line every time comes, when I send a mail through webmail - think when the client copies the message to the Sent folder (anyway, the sent messages are in Sent folder after sending, so everything works). Do you have any idea? Thanks, a.

1 0

Hibernation and proxy
by azurit＠pobox.sk 28 Mar '19

28 Mar '19

Hi, does hibernation works well with proxy? Are proxy connections hibernated or not? azur

2 3

Regression ACL & namespace prefix
by Michal Hlavinka 28 Mar '19

28 Mar '19

Hi tl;dr: Seems that for Global ACL directory, namespace prefix is not part of the path, when looking for acl file. Long version: We're planning to update dovecot in next os update to 2.2.36 and while going through regression testing, we found a problem with ACL configuration combined with namespace. Test uses "Global ACL directory" configuration. Relevant configuration part: mail_location = maildir:~/Maildir namespace inbox { hidden = no inbox = yes list = yes location = prefix = separator = / } namespace { hidden = no list = yes location = maildir:/var/mail/pub prefix = pub/ separator = / type = public } mail_plugins = acl protocol imap { mail_plugins = $mail_plugins acl imap_acl } plugin { acl = vfile:/etc/dovecot/global-acls } ACL config file is stored at: /etc/dovecot/global-acls/pub/.DEFAULT when trying to examine "pub", it is denied: fetchmail: IMAP> A0005 EXAMINE "pub" fetchmail: IMAP< A0005 NO Mailbox doesn't exist: pub (0.001 + 0.000 secs). # doveadm acl debug -u d2 pub doveadm(d2): Info: Mailbox '' is in namespace 'pub/' doveadm(d2): Info: Mailbox path: /var/mail/pub doveadm(d2): Info: All message flags are shared across users in mailbox doveadm(d2): Info: User d2 has no rights for mailbox doveadm(d2): Error: User d2 is missing 'lookup' right doveadm(d2): Info: Mailbox pub is NOT visible in LIST because it did not find acl file: imap(d2): Debug: Namespace : type=public, prefix=pub/, sep=/, inbox=no, hidden=no, list=yes, subscriptions=yes location=maildir:/var/mail/pub imap(d2): Debug: maildir++: root=/var/mail/pub, index=, indexpvt=, control=, inbox=, alt= imap(d2): Debug: acl: initializing backend with data: vfile:/etc/dovecot/global-acls imap(d2): Debug: acl: acl username = d2 imap(d2): Debug: acl: owner = 0 imap(d2): Debug: acl vfile: Global ACL legacy directory: /etc/dovecot/global-acls imap(d2): Debug: pub: Mailbox opened because: EXAMINE imap(d2): Debug: acl vfile: file /etc/dovecot/global-acls//.DEFAULT not found imap(d2): Debug: acl vfile: file /var/mail/pub/dovecot-acl not found see it's looking for: /etc/dovecot/global-acls//.DEFAULT instead of /etc/dovecot/global-acls/pub/.DEFAULT Checking with documentation https://wiki.dovecot.org/ACL it seems that prefix should still be part of the path, as it was before: """The filenames must start with namespace prefix (if it has one). For example with namespace prefix=INBOX/ containing mailbox "foo" use /etc/dovecot/acls/INBOX/foo.""" Just for comparison, previous version (2.2.10) would work fine: imap(d2): Debug: Namespace : type=public, prefix=pub/, sep=/, inbox=no, hidden=no, list=yes, subscriptions=yes location=maildir:/var/mail/pub imap(d2): Debug: maildir++: root=/var/mail/pub, index=, indexpvt=, control=, inbox=, alt= imap(d2): Debug: acl: initializing backend with data: vfile:/etc/dovecot/global-acls imap(d2): Debug: acl: acl username = d2 imap(d2): Debug: acl: owner = 0 imap(d2): Debug: acl vfile: Global ACL directory: /etc/dovecot/global-acls imap(d2): Debug: acl vfile: reading file /etc/dovecot/global-acls/pub/.DEFAULT imap(d2): Debug: acl vfile: file /var/mail/pub/dovecot-acl not found I've localized problem to: src/plugins/acl/acl-backend-vfile.c: acl_backend_vfile_object_init(...) and change from: vname = mailbox_list_get_vname(_backend->list, name); to: vname = *name == '\0' ? "" : mailbox_list_get_vname(_backend->list, name); that happened quite time ago during bigger acl changes and I don't know why exactly this line was changed previously. Anyway, reverting this line alone fixes the problem and while testing both per-mailbox ACL vfile and Global ACL file, reverting this did not affect them.

3 7

CVE-2019-7524 backport patch for 2.2.33.2
by Gerald Galster 28 Mar '19

28 Mar '19

Hello Aki, I'm currently stuck with 2.2.33.2 as 2.2.36 still duplicates mails after pop3 deletion on a two node dsync cluster. Therefore I've created a small patch and it seems only these two files are affected: dovecot-2.2.36.3/src/lib-storage/index/index-pop3-uidl.c dovecot-2.2.36.3/src/plugins/fts/fts-api.c Please correct me if I have missed something. Best regards Gerald

2 1