- dovecot - dovecot.org

Troubleshooting mailbox problems
by Nick Bright 11 Mar '16

11 Mar '16

Greetings, I'm running Dovecot 2.0.9 on my CentOS 6 server, for several thousand mailboxes. Recently, I've had several reports of "my mailbox is suddenly empty, where'd my mail go?" I've enabled debug logging, but I'd like to make sure I have the best level of debug to see things like "delete message" commands? I've configured in logging: auth_debug = yes auth_debug_passwords = no mail_debug = yes plugin { mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_group_events = yes mail_log_fields = uid box msgid size } Does this look like a good start? I really think it's a client side problem, but sometimes end users always want to blame the server; and proof must be shown e.g. "Look, here's the log, you're sending delete commands." At which point, we can proceed with dealing with their software problem. Thanks, -- ----------------------------------------------- - Nick Bright - - Vice President of Technology - - Valnet -=- We Connect You -=- - - Tel 888-332-1616 x 315 / Fax 620-331-0789 - - Web http://www.valnet.net/ - ----------------------------------------------- - Are your files safe? - - Valnet Vault - Secure Cloud Backup - - More information & 30 day free trial at - - http://www.valnet.net/services/valnet-vault - ----------------------------------------------- This email message and any attachments are intended solely for the use of the addressees hereof. This message and any attachments may contain information that is confidential, privileged and exempt from disclosure under applicable law. If you are not the intended recipient of this message, you are prohibited from reading, disclosing, reproducing, distributing, disseminating or otherwise using this transmission. If you have received this message in error, please promptly notify the sender by reply E-mail and immediately delete this message from your system.

3 6

Setting up public mailboxes - user not found
by Marti Markov 10 Mar '16

10 Mar '16

Hi all, This is the first time I use the dovecot mail list so I’m sorry if I forget something. My problem is that for some reason I can get public mailboxes to work. I have setup the directory Public, the folders and the cur,tmp and new folder in them: Public | |- .office3 | |- cur |- tmp |- new |- dovecot-acl Here is my dovecot conf: # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 3.14.32-xxxx-grs-ipv6-64 x86_64 auth_default_realm = xxx.com auth_mechanisms = plain login mail_gid = vmail mail_home = /home/vmail/%d/%n mail_location = maildir:~/Maildir mail_plugins = acl 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 = yes location = maildir:/home/vmail/xxx.com/Public:INDEXPVT=~/Maildir/Public prefix = Public/ separator = / subscriptions = yes type = public } 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 = / type = private } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { acl = vfile sieve = ~/.dovecot.sieve sieve_before = /etc/dovecot/sieve/dovecot.sieve sieve_dir = ~/sieve } postmaster_address = postmaster(a)xxx.com protocols = " imap lmtp sieve" service auth { unix_listener auth-client { group = Debian-exim mode = 0660 user = Debian-exim } } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } } service lmtp { unix_listener lmtp { mode = 0666 } } ssl = required ssl_cert = </etc/dovecot/xxx.com.pem ssl_key = </etc/dovecot/private/xxx.private.pem ssl_key_password = yyyyyyy userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } verbose_ssl = yes protocol lmtp { mail_plugins = acl sieve } protocol imap { mail_plugins = acl imap_acl } The error I’m getting is that LMTP can’t deliver to office3(a)xxx.com because the user could not be found. (I’m using LDAP authentication for the users) Mar 9 19:50:43 mail spamd[21021]: spamd: connection from localhost.localdomain [127.0.0.1]:56531 to port 783, fd 5 Mar 9 19:50:43 mail spamd[21021]: spamd: setuid to Debian-exim succeeded Mar 9 19:50:43 mail spamd[21021]: spamd: checking message <FBFE5FE1-A3C3-4C3D-8BD9-1C2AAC90BE17(a)xxx.com> for Debian-exim:107 Mar 9 19:50:44 mail spamd[21021]: spamd: clean message (-1.1/5.0) for Debian-exim:107 in 0.5 seconds, 1611 bytes. Mar 9 19:50:44 mail spamd[21021]: spamd: result: . -1 - BAYES_00,HTML_MESSAGE,RDNS_NONE,TVD_SPACE_RATIO scantime=0.5,size=1611,user=Debian-exim,uid=107,required_score=5.0,rhost=localhost.localdomain,raddr=127.0.0.1,rport=56531,mid=<FBFE5FE1-A3C3-4C3D-8BD9-1C2AAC90BE17(a)xxx.com>,bayes=0.000000,autolearn=no autolearn_force=no Mar 9 19:50:44 mail spamd[9510]: prefork: child states: II Mar 9 19:50:44 mail dovecot: lmtp(14554): Connect from local Mar 9 19:50:44 mail dovecot: auth: Debug: master in: USER#0111#011office3(a)xxx.com#011service=lmtp Mar 9 19:50:44 mail dovecot: auth: Debug: ldap(office3(a)xxx.com): user search: base=ou=people,dc=xxx,dc=com scope=subtree filter=(&(objectClass=person)(uid=office3)) fields=(all) Mar 9 19:50:44 mail dovecot: auth: Debug: ldap(office3(a)xxx.com): no fields returned by the server Mar 9 19:50:44 mail dovecot: auth: ldap(office3(a)xxx.com): unknown user Mar 9 19:50:44 mail dovecot: auth: Debug: userdb out: NOTFOUND#0111 Mar 9 19:50:44 mail dovecot: lmtp(14554): Disconnect from local: Successful quit So as I see it LMTP tries to see if the user exists and fails because there is no such user (which is true, the LDAP object office3 has a different base). I’m not sure but should Dovecot skip this and check the Public folder first before checking LDAP? Another part of my setup is Exim4. Here is the transport part: dovecot_lmtp: driver = lmtp socket = /var/run/dovecot/lmtp return_path_add #maximum number of deliveries per batch, default 1 batch_max = 200 And here is the auth part: dovecot_login: driver = dovecot public_name = LOGIN server_socket = /var/run/dovecot/auth-client # setting server_set_id might break several headers in mails sent by authenticated smtp. So be careful. server_set_id = $auth1 .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} .endif dovecot_plain: driver = dovecot public_name = PLAIN server_socket = /var/run/dovecot/auth-client server_set_id = $auth1 .ifndef AUTH_SERVER_ALLOW_NOTLS_PASSWORDS server_advertise_condition = ${if eq{$tls_in_cipher}{}{}{*}} .endif So any tips on how to fix this would be great.

4 3

zlib plugin doesn't add "Z" flag to Maildir filename
by Tom Sommer 10 Mar '16

10 Mar '16

I enabled zlib compression, so new mails are saved compressed. Now I want to convert the old mails to gzip with the find and gzip command, but now I don't know which files are already gzip compressed by dovecot. Shouldn't zlib_save itself add Z to the Maildir flags? As suggested in the compress guide on http://wiki2.dovecot.org/Plugins/Zlib ? -- Tom

2 4

v2.2.22 release candidate released
by Timo Sirainen 10 Mar '16

10 Mar '16

http://dovecot.org/releases/2.2/rc/dovecot-2.2.22.rc1.tar.gz http://dovecot.org/releases/2.2/rc/dovecot-2.2.22.rc1.tar.gz.sig There are some larger changes here, especially to doveadm to make it support HTTP API. There's still time to do smaller tweaks to the API, so let us know if you have some improvement ideas. Note that the API was designed to look mostly like JMAP, which we're planning to implement also for v2.3. The plan is to fork v2.3 development tree soon. + Added doveadm HTTP API: See http://wiki2.dovecot.org/Design/DoveadmProtocol/HTTP + virtual plugin: Mailbox filtering can now be done based on the mailbox metadata. See http://wiki2.dovecot.org/Plugins/Virtual + stats: Added doveadm stats reset to reset global stats. + stats: Added authentication statistics if auth_stats=yes. + dsync, imapc, pop3c & pop3-migration: Many optimizations, improvements and error handling fixes. + doveadm: Most commands now stop soon after SIGINT/SIGTERM. - auth: Auth caching was done too aggressively when %variables were used in default_fields, override_fields or LDAP pass/user_attrs. userdb result_* were also ignored when user was found from cache. - imap: Fixed various assert-crashes caused v2.2.20+. Some of them caught actual hangs or otherwise unwanted behavior towards IMAP clients. - Expunges were forgotten in some situations, for example when pipelining multiple IMAP MOVE commands. - quota: Per-namespaces quota were broken for dict and count backends in v2.2.20+ - fts-solr: Search queries were using OR instead of AND as the separator for multi-token search queries in v2.2.20+.

8 8

Re: Client-initiated secure renegotiation
by djk 10 Mar '16

10 Mar '16

On 09/03/16 10:44, Florent B wrote: > Hi, > > I don't see any SSL configuration option in Dovecot to disable > "Client-initiated secure renegotiation". > > It is advised to disable it as it can cause DDoS (CVE-2011-1473). > > Is it possible to have this possibility through an SSL option or other ? > > Thank you. > > Florent ssl_protocols = !SSLv3 !SSLv2 Is that enough?

4 4

Dovecot 2 Issue
by Peter Fraser 10 Mar '16

10 Mar '16

Hi All I have had a Dovecot-1.x Server running without issue for about 5 years now. I decided to set up a new Server and configure version 2 from scratch. I am having a little issue though. Set up on FreeBSD 10.2 Using dovecot2-2.2.21_1 Dovecot starts up but isn't listening on pop3 and imap ports. Not sure what I have missed. My dovecot -a readout is below. Thanks for any help. root@SMTP1:/home/frank # doveconf -a # 2.2.21 (5345f22): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.4.12 (c1c0a23) # OS: FreeBSD 10.2-RELEASE-p9 amd64 # 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_debug = yes 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_proxy_self = auth_realms = auth_socket_path = auth-userdb auth_ssl_require_client_cert = no auth_ssl_username_from_cert = no auth_use_winbind = no auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ auth_username_format = %Ln auth_username_translation = auth_verbose = yes 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_user = dovecot default_login_user = dovenull default_process_limit = 100 default_vsz_limit = 256 M deliver_log_format = msgid=%m: %$ dict_db_config = director_consistent_hashing = no director_doveadm_port = 0 director_mail_servers = 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_password = doveadm_port = 0 doveadm_socket_path = doveadm-server doveadm_username = doveadm doveadm_worker_count = 0 dsync_alt_char = _ dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u -U first_valid_gid = 1000 first_valid_uid = 1000 haproxy_timeout = 3 secs haproxy_trusted_networks = hostname = example.com imap_capability = imap_client_workarounds = delay-newmail tb-extra-mailbox-sep imap_hibernate_timeout = 0 imap_id_log = imap_id_send = name * imap_idle_notify_interval = 2 mins imap_logout_format = in=%i out=%o 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_features = imapc_host = imapc_list_prefix = imapc_master_user = imapc_max_idle_time = 29 mins 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 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/local/libexec/dovecot listen = * lmtp_address_translate = lmtp_hdr_delivery_address = final lmtp_proxy = no lmtp_rcpt_check_quota = no lmtp_save_to_detail_mailbox = no lmtp_user_concurrency_limit = 0 lock_method = fcntl log_path = syslog log_timestamp = "%b %d %H:%M:%S " login_access_sockets = login_greeting = Mail Server ready. login_log_format = %$: %s login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c session=<%{session}> login_proxy_max_disconnect_delay = 0 login_source_ips = login_trusted_networks = mail_access_groups = mail_always_cache_fields = mail_attachment_dir = mail_attachment_fs = sis posix mail_attachment_hash = %{sha1} mail_attachment_min_size = 128 k mail_attribute_dict = mail_cache_fields = flags mail_cache_min_mail_count = 0 mail_chroot = mail_debug = no mail_fsync = optimized mail_full_filesystem_access = no mail_gid = mail_home = mail_location = maildir:~/Maildir:INBOX=~/Maildir/:INDEX=~/Maildir/tmp/index mail_log_prefix = "%s(%u): " mail_max_keyword_length = 50 mail_max_lock_timeout = 0 mail_max_userip_connections = 10 mail_never_cache_fields = imap.envelope mail_nfs_index = no mail_nfs_storage = no mail_plugin_dir = /usr/local/lib/dovecot mail_plugins = mail_prefetch_count = 0 mail_privileged_group = mail mail_save_crlf = no mail_server_admin = mail_server_comment = mail_shared_explicit_inbox = no mail_temp_dir = /tmp mail_temp_scan_interval = 1 weeks mail_uid = mailbox_idle_check_interval = 30 secs mailbox_list_index = 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 = dotlock fcntl mdbox_preallocate_space = no mdbox_purge_preserve_alt = no mdbox_rotate_interval = 0 mdbox_rotate_size = 2 M mmap_disable = no namespace inbox { disabled = no hidden = no ignore_on_failure = no inbox = yes list = yes location = maildir:/home/public/public mailbox Drafts { auto = no autoexpunge = 0 comment = driver = special_use = \Drafts } mailbox Junk { auto = no autoexpunge = 0 comment = driver = special_use = \Junk } mailbox Sent { auto = no autoexpunge = 0 comment = driver = special_use = \Sent } mailbox "Sent Messages" { auto = no autoexpunge = 0 comment = driver = special_use = \Sent } mailbox Trash { auto = no autoexpunge = 0 comment = driver = special_use = \Trash } order = 0 prefix = public/ separator = / subscriptions = yes type = public } passdb { args = default_fields = deny = no driver = pam master = no name = override_fields = pass = no result_failure = continue result_internalfail = continue result_success = return-ok skip = never } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh 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 = yes pop3_save_uidl = no pop3_uidl_duplicates = allow pop3_uidl_format = %08Xu%08Xv 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 = it(a)example.com protocols = sieve quota_full_tempfail = no 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 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 = 0 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 = mode = 0600 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 = mode = 0600 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 inet_listener { address = haproxy = no port = 0 reuse_port = no ssl = no } privileged_group = process_limit = 1 process_min_avail = 0 protocol = service_count = 0 type = unix_listener director-admin { group = mode = 0600 user = } unix_listener director-userdb { 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 = 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 = mode = 0600 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 = 143 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 = 0 protocol = imap service_count = 1 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 = 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 = 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 = 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 = } 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 = 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 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 = 110 reuse_port = no ssl = no } inet_listener pop3s { address = 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 = 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 ssl-params { chroot = client_limit = 0 drop_priv_before_exec = no executable = ssl-params extra_groups = group = idle_kill = 0 privileged_group = process_limit = 0 process_min_avail = 0 protocol = service_count = 0 type = startup unix_listener login/ssl-params { group = mode = 0666 user = } unix_listener ssl-params { group = mode = 0666 user = } user = vsz_limit = 18446744073709551615 B } service stats { chroot = empty client_limit = 0 drop_priv_before_exec = no executable = stats extra_groups = fifo_listener stats-mail { 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 stats { group = mode = 0600 user = } user = $default_internal_user vsz_limit = 18446744073709551615 B } shutdown_clients = yes ssl = yes ssl_ca = ssl_cert = </etc/ssl/certs/dovecot.pem ssl_cert_username_field = commonName ssl_cipher_list = ALL:!ADH!LOW:!SSLv2:!EXP:+HIGH:+MEDIUM ssl_client_ca_dir = ssl_client_ca_file = ssl_client_cert = ssl_client_key = ssl_crypto_device = ssl_dh_parameters_length = 1024 ssl_key = </etc/ssl/private/dovecot.pem ssl_key_password = ssl_options = ssl_parameters_regenerate = 0 ssl_prefer_server_ciphers = no ssl_protocols = !SSLv2 ssl_require_crl = yes ssl_verify_client_cert = no state_dir = /var/db/dovecot stats_command_min_time = 1 mins stats_domain_min_time = 12 hours stats_ip_min_time = 12 hours stats_memory_limit = 16 M stats_session_min_time = 15 mins stats_user_min_time = 1 hours submission_host = syslog_facility = mail userdb { args = default_fields = driver = passwd name = override_fields = result_failure = continue result_internalfail = continue result_success = return-ok skip = never } valid_chroot_dirs = verbose_proctitle = yes verbose_ssl = no version_ignore = no protocol lda { mail_plugins = quota acl sieve } protocol imap { mail_plugins = quota imap_quota acl imap_acl } protocol pop3 { mail_plugins = quota }

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Using dsync to synchronize laptop against remote server
by Dato Simó 10 Mar '16

10 Mar '16

Hello! I’m thinking of changing the way I sync mail to my laptop, and I have a couple questions about my intended setup. In brief, my plan is: instead of running offlineimap against various IMAP accounts (my personal one included), I will run fetchmail on my private server, and classify mail with Sieve there. Then I’ll run a local Dovecot on my laptop, and do a master/master replication from my personal server/account with dsync. I have two quick questions about this (I have never used dsync before): 1. Reading the manual page, it seems that I probably want stateful synchronization (-s flag). Not having used it before, I’m curious about what lag I can expect. Does it compare to an IMAP IDLE/IMAP NOTIFY connection? Or is it asynchronous / with a timer? 2. I assume modifying my local Maildirs with e.g. Mutt is... a big no-no? Instead, should I always force Mutt to go through the local IMAP server? Many thanks in advance, -d

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Re: Dovecot stops responding when I update SSL certificate
by HotSlots Webmaster 10 Mar '16

10 Mar '16

Time to put an end to this saga... I had an issue that Dovecot refused to serve an updated SSL certificate - one that Postfix had no issue with. Though I quadruple-checked that the cert file and private key file were correct, in the end I simply directed both cert and key files to the file I was using for Postfix (which had both the cert and private key). That worked. Darned if I know what it didn't like about the other files, but I'm back in business with the new cert. Thanks for the responsiveness from Aki. Steve L

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Replication not working
by Simon Pierre Desrosiers 10 Mar '16

10 Mar '16

Hello, I am trying to setup replication between two Mac OS X El Capitan Server. I have added the field as I could understand from the replication page of dovecot and from a few poste in the mailing list. The mac uses the system user _dovecot as main system account. I have setup ssh keys between the two systems for the two _dovecot servers. SSh works fine from the terminal. But yet, I get these messages in the log file : Mar 09 20:18:44 auth: Error: od[getpwnam_ext](submit): No record for user Mar 09 20:18:44 doveadm: Error: Host key verification failed. Mar 09 20:18:44 dsync-local(submit): Error: read(_dovecot(a)laposte.mycompagny.com) failed: EOF Mar 09 20:18:44 dsync-local(submit): Error: Remote command returned error 255 Mar 09 20:23:44 auth: Error: od[getpwnam_ext](submit): No record for user Mar 09 20:23:44 doveadm: Error: Host key verification failed. Mar 09 20:23:44 dsync-local(submit): Error: read(_dovecot(a)laposte.mycompagny.com) failed: EOF Mar 09 20:23:44 dsync-local(submit): Error: Remote command returned error 255 and so on every few minutes. I have a few things about which I am not sure. We configure port 12345, but nothing listen on that port. The doveadm_password, what is it exactly ? Should I use a distinct account than _dovecot for synchronisation (all the fields that need to be added for replication) ? Here is my configuration, any help would be appreciated : # 2.2.5: /Library/Server/Mail/Config/dovecot/dovecot.conf # OS: Darwin 15.3.0 x86_64 hfs auth_mechanisms = cram-md5 digest-md5 gssapi auth_realms = labanque.mycompagny.com auth_socket_path = /var/run/dovecot/auth-userdb auth_username_format = %n debug_log_path = /Library/Logs/Mail/mail-debug.log default_internal_user = _dovecot default_login_user = _dovenull doveadm_password = MyOwnSecret doveadm_port = 12345 dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u first_valid_gid = 6 first_valid_uid = 6 imap_id_log = * imap_id_send = "name" * "version" * imap_urlauth_submit_user = submit info_log_path = /Library/Logs/Mail/mail-info.log log_path = /Library/Logs/Mail/mail-err.log login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c mail_access_groups = mail mail_attribute_dict = file:/Library/Server/Mail/Data/attributes/attributes.dict mail_location = maildir:/Library/Server/Mail/Data/mail/%u mail_log_prefix = "%s(pid %p user %u): " mail_plugins = quota zlib acl fts fts_sk notify replication 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 mdbox_rotate_size = 200 M namespace acl-mailboxes { list = children location = maildir:/Library/Server/Mail/Data/mail/users/%%u:INDEX=/Library/Server/Mail/Data/mail/shared/%%u prefix = shared.%%u. separator = . subscriptions = no type = shared } 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 = } namespace list-archives { list = children location = maildir:/Library/Server/Mail/Data/listserver/messages/archive/lists/%%u:INDEX=/Library/Server/Mail/Data/listserver/messages/archive/shared/%%u prefix = archives.%%u. separator = . subscriptions = no type = shared } passdb { driver = od } passdb { args = /Library/Server/Mail/Config/dovecot/submit.passdb driver = passwd-file } plugin { acl = vfile:/Library/Server/Mail/Config/dovecot/global-acls:cache_secs=300 acl_shared_dict = file:/Library/Server/Mail/Data/shared/shared-mailboxes fts = sk mail_replica = remote:_dovecot@laposte.mycompagny.com quota = maildir:User quota quota_warning = storage=100%% quota-exceeded %u quota_warning2 = storage=80%% quota-warning %u sieve = /Library/Server/Mail/Data/rules/%u/dovecot.sieve sieve_dir = /Library/Server/Mail/Data/rules/%u stats_refresh = 30 secs stats_track_cmds = yes } postmaster_address = postmaster(a)labanque.mycompagny.com protocols = imap lmtp sieve pop3 quota_full_tempfail = yes service aggregator { fifo_listener replication-notify-fifo { user = _dovecot } unix_listener replication-notify { user = _dovecot } } service auth { extra_groups = _keytabusers idle_kill = 15 mins unix_listener auth-userdb { user = _dovecot } } service dns_client { unix_listener dns-client { mode = 0600 } } service doveadm { user = _dovecot } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } service_count = 0 } service imap { client_limit = 5 process_limit = 200 service_count = 0 } service indexer-worker { user = _dovecot } service lmtp { unix_listener lmtp { mode = 0600 } } service managesieve-login { inet_listener sieve { port = 4190 } } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } } service pop3 { client_limit = 5 process_limit = 200 service_count = 0 } service quota-exceeded { executable = script /Applications/Server.app/Contents/ServerRoot/usr/libexec/dovecot/quota-exceeded.sh unix_listener quota-exceeded { group = mail mode = 0660 user = _dovecot } user = _dovecot } service quota-warning { executable = script /Applications/Server.app/Contents/ServerRoot/usr/libexec/dovecot/quota-warning.sh unix_listener quota-warning { group = mail mode = 0660 user = _dovecot } user = _dovecot } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0600 } } service stats { fifo_listener stats-mail { mode = 0600 user = _dovecot } } ssl = required ssl_ca = </etc/certificates/labanque.mycompagny.com.423929C9712FE705D69805A43769B318C7D3CBB3.chain.pem ssl_cert = </etc/certificates/labanque.mycompagny.com.423929C9712FE705D69805A43769B318C7D3CBB3.cert.pem ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL:!ADH:!eNULL ssl_key = </etc/certificates/labanque.mycompagny.com.423929C9712FE705D69805A43769B318C7D3CBB3.key.pem ssl_key_path = /etc/certificates/labanque.mycompagny.com.423929C9712FE705D69805A43769B318C7D3CBB3.key.pem userdb { args = partition=/Library/Server/Mail/Config/dovecot/partition_map.conf global_quota=5000 enforce_quotas=yes driver = od } userdb { args = /Library/Server/Mail/Config/dovecot/submit.passdb driver = passwd-file } verbose_proctitle = yes protocol lmtp { mail_plugins = quota zlib acl fts fts_sk sieve } protocol lda { mail_plugins = quota zlib acl fts fts_sk sieve } protocol imap { mail_max_userip_connections = 20 mail_plugins = quota zlib acl fts fts_sk imap_acl imap_quota imap_zlib } protocol pop3 { mail_max_userip_connections = 6 }

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Released Pigeonhole v0.4.13.rc1 for Dovecot v2.2.22.rc1.
by Stephan Bosch 09 Mar '16

09 Mar '16

Hello Dovecot users, Pigeonhole v0.4.12 still compiles against Dovecot v2.2.22.rc1, but only with warnings. That is the primary reason for this new release. However, there are also a few significant changes as listed below. When no significant problems are reported, a definitive release will follow closely after Dovecot v2.2.22 is released. Changelog v0.4.13: * redirect action: Added the list-id header to the duplicate ID for mail loop prevention. This means that the message sent directly to the user and the message coming through the mailing list itself are treated as different messages by the loop detection of the redirect command, even though their Message-ID may be identical. * Changed the Sieve number type to uint64_t, which means that Sieve numbers can now technically range up to 2^64. Some other Sieve implementation allowed this, making this change necessary for successful migration. + Implemented the sieve_implicit_extensions setting. The extensions listed in this setting do not need to be enabled explicitly using the Sieve "require" command. This behavior directkly violates the standard, but can be necessary for compatibility with some existing implementations of Sieve. Do not use this setting unless you really need to! - redirect action: Made mail loop detection more robust by forcibly adding a Message-ID header if it is missing. - Prevent logging a useless "script not found" error message for LDAP scripts for which the entry exists but no attribute containing a script. This is not necessarily an error. - extprograms plugin: Changed the communication channel between parent and child process for a directly forked program from a socketpair to a double pipe. Linux does not support /dev/stdin, /dev/stdout and friends for sockets. For some shell program authors this may be confusing, so that is why it is changed. When using the script service, these device nodes are still not usable though. The release is available as follows: http://pigeonhole.dovecot.org/releases/2.2/rc/dovecot-2.2-pigeonhole-0.4.13… http://pigeonhole.dovecot.org/releases/2.2/rc/dovecot-2.2-pigeonhole-0.4.13… Refer to http://pigeonhole.dovecot.org and the Dovecot v2.x wiki for more information. Have fun testing this release candidate and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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