- dovecot - dovecot.org

Using Dovecot for IMAP/POP and SMTP
by Kenneth Ulrich 06 Aug '17

06 Aug '17

All, I was wondering if it is possible to use Dovecot as both incoming and outgoing. I have a friend that I am helping build a server, and he plans on using Dovecot for POP/IMAP and Postfix for SMTP and mailbox storage. If I understand right, Dovecot can handle both services and that is the path I would like him to take for easier maintenance. Can someone confirm this?

3 2

Re: Corrupted SSL parameters file in state_dir: ssl-parameters.dat
by Joseph Tam 05 Aug '17

05 Aug '17

> But if I enable SSL, the doveadm backup on the remote machine hangs. > And the destination machine prints the following two massages in the > logs : > > Aug 4 17:10:31 bbb dovecot: doveadm: Error: Corrupted SSL parameters > file in state_dir: ssl-parameters.dat - disabling SSL 360 > Aug 4 17:10:31 bbb dovecot: doveadm: Error: Couldn't initialize SSL > parameters, disabling SSL > > > BUT : > > (1) /var/lib/dovecot/ssl-parameters.dat *DOES* exist. > and > (2) If I delete it and restart dovecot, it successully re-creates it, as per > Aug 4 17:02:32 bbb dovecot: ssl-params: Generating SSL parameters > Aug 4 17:06:58 bbb dovecot: ssl-params: SSL parameters regeneration completed Your timestamps suggest you did this the other way around. Aki mentioned that issue is/will be fixed, but DH parameters can take a *very* long time to generate if you're unlucky, so maybe it's a timing issue (using the service before the DH parameters was ready.) Joseph Tam <jtam.home(a)gmail.com>

2 1

Re: Doveadm-sync SSH practicalities
by Joseph Tam 05 Aug '17

05 Aug '17

Terry Jones wrote: > The documentation is somewhat silent on this subject. If you mean https://wiki.dovecot.org/Tools/Doveadm/Sync the answers seem implicit to what's been stated. > What permissions does the SSH user need ? To be able to run the doveadm executable (or a wrapper script that eventually runs doveadm) on the remote side. > How associated does it need to be with things like dovecot directory > ownership etc ? It will take uid/gid directly from the login privileges unless you use a wrapper script that changes UID/GID. This may be necessary if you use remote-prefix option for remapping virtual users and user@domain to another UID/GID. > Obviously my dovecot daemon processes are running as restricted users > with "nologin" shells etc., and I don't really want to go opening > them up if I don't have to. It doesn't seem possible: you'll need to be able to set up the other endpoint of communication. You may be able to lock down the shell by replacing it with a fixed doveadm and arguments, or perhaps by fiddling with keys and the forced command feature of ssh, after working out the security issues. Depending on your use-case, you might be better off using one of the other transport methods. Do you actually need per-user syncing? Joseph Tam <jtam.home(a)gmail.com>

2 2

Auth Policy Server/wforce/weakforced
by Daniel Miller 04 Aug '17

04 Aug '17

Is there explicit documentation available for the (probably trivial) configuration needed for Dovecot and Wforce? I'm probably missing something that should be perfectly obvious... Wforce appears to start without errors. I added a file to dovecot's conf.d: 95-policy.conf: auth_policy_server_url = http://localhost:8084/ auth_policy_hash_nonce = this_is_my_super_secret_something Looking at the Wforce console I see: WforceWebserver: HTTP Request "/" from 127.0.0.1:45108: Web Authentication failed In wforce.conf I have the (default): webserver("0.0.0.0:8084", "--WEBPWD") Do I need to change the "--WEBPWD"? Do I need to specify something in the Dovecot config? -- Daniel

2 2

Corrupted SSL parameters file in state_dir: ssl-parameters.dat
by Terry Jones 04 Aug '17

04 Aug '17

Dovecot 2.2.10 Centos 7 Linux 3.10.0-514.26.2.el7.x86_64 #1 SMP Tue Jul 4 15:04:05 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux I have been experimenting with backup options to another server using dovadm and was trying to use the doveadm service as a workaround seeing as I couldn't decipher what the docs were saying about ssh. My doveadm stanza looks as follows: service doveadm { inet_listener { port = 10101 ssl = yes } } If "ssl=no", a pushed "doveadm backup" from the remote machine works OK. But if I enable SSL, the doveadm backup on the remote machine hangs. And the destination machine prints the following two massages in the logs : Aug 4 17:10:31 bbb dovecot: doveadm: Error: Corrupted SSL parameters file in state_dir: ssl-parameters.dat - disabling SSL 360 Aug 4 17:10:31 bbb dovecot: doveadm: Error: Couldn't initialize SSL parameters, disabling SSL BUT : (1) /var/lib/dovecot/ssl-parameters.dat *DOES* exist. and (2) If I delete it and restart dovecot, it successully re-creates it, as per Aug 4 17:02:32 bbb dovecot: ssl-params: Generating SSL parameters Aug 4 17:06:58 bbb dovecot: ssl-params: SSL parameters regeneration completed

2 1

Problem switching from LDA to LMTP (with Postfix)
by Nikolaos Milas 04 Aug '17

04 Aug '17

Hello, I am trying to switch from LDA to LMTP on a Postfix/Dovecot setup, but something is going wrong. I have followed the directions at: https://wiki.dovecot.org/HowTo/PostfixDovecotLMTP Here is a session from dovecot.log: Aug 4 12:19:42 vmail2 dovecot: lmtp(3152): Connect from local Aug 4 12:19:42 vmail2 dovecot: auth: ldap(imaptester(a)noa.gr): unknown user Aug 4 12:19:42 vmail2 dovecot: lmtp(3152): Disconnect from local: Successful quit Aug 4 12:19:42 vmail2 dovecot: lmtp(3152): Connect from local Aug 4 12:19:42 vmail2 dovecot: auth: ldap(nmilas(a)noa.gr): unknown user Aug 4 12:19:42 vmail2 dovecot: lmtp(3152): Disconnect from local: Successful quit Aug 4 12:19:42 vmail2 dovecot: imap(nmilas): save: box=Sent, uid=31, msgid=<c84ae059-854d-12bc-6aa2-9099cc2977b2(a)noa.gr>, size=445, vsize=459, from=Nikolaos Milas <nmilas(a)noa.gr>, subject=Test (12) - vmail2, flags=(\Seen) What is going wrong? It seems authentication is not working correctly with this setup. If understand right, dovecot is querying ldap with the whole mail address and not with the local part only (which is the username), as I would expect. What is the suggested course of action? With LDA it was working fine; here is a sample log entry: Aug 4 12:02:51 vmail2 dovecot: lda(imaptester): sieve: msgid=<768b056c-1d12-c9bd-0864-c3fc6a6dbeda(a)noa.gr>: stored mail into mailbox 'INBOX' Aug 4 12:02:51 vmail2 dovecot: imap(nmilas): save: box=Sent, uid=30, msgid=<768b056c-1d12-c9bd-0864-c3fc6a6dbeda(a)noa.gr>, size=445, vsize=459, from=Nikolaos Milas <nmilas(a)noa.gr>, subject=Test (11) - vmail2, flags=(\Seen) Aug 4 12:02:51 vmail2 dovecot: imap(nmilas): Connection closed (noop finished 0.372 secs ago) in=628 out=2145 Please help me to figure out how things should be. The config file follows: ----------------------------- CONFIG START -------------------------------- protocols = imap pop3 sieve lmtp login_greeting = NOA POP/IMAP Srv XAPITI XPICTOY mail_location = maildir:~/Maildir/ mail_gid = 500 mail_uid = 500 auth_mechanisms = plain login auth_username_format = %Lu auth_verbose = yes auth_debug = no mail_debug = no disable_plaintext_auth = no mail_plugins = quota mail_log notify protocol imap { imap_client_workarounds = "delay-newmail" mail_plugins = quota imap_quota mail_log notify mail_max_userip_connections = 400 } protocol pop3 { mail_max_userip_connections = 3 mail_plugins = quota notify pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } protocol lda { auth_socket_path = /var/run/dovecot/auth-master info_log_path = log_path = mail_plugins = quota notify sieve postmaster_address = sysadmin(a)noa.gr sendmail_path = /usr/lib/sendmail } protocol lmtp { auth_socket_path = /var/run/dovecot/auth-master postmaster_address = sysadmin(a)noa.gr mail_plugins = quota notify sieve sendmail_path = /usr/lib/sendmail } protocol sieve { managesieve_max_line_length = 65536 mail_max_userip_connections = 10 managesieve_logout_format = bytes=%i/%o managesieve_max_compile_errors = 10 } userdb { args = /etc/dovecot/dovecot-usrdb-ldap.conf driver = ldap } passdb { args = /etc/dovecot/dovecot-passdb-ldap.conf driver = ldap } plugin { mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename flag_change save mailbox_create mail_log_fields = uid box msgid size flags vsize from subject } plugin { quota = maildir:User quota quota_rule = *:storage=5G quota_rule2 = Trash:storage=+3%% quota_warning = storage=75%% quota-warning 75 %u quota_warning2 = storage=90%% quota-warning 90 %u } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve sieve_max_script_size = 0 sieve_max_actions = 0 sieve_max_redirects = 1 } service quota-warning { executable = script /opt/mail1.sh user = vmail unix_listener quota-warning { user = vmail } } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-master { group = vmail mode = 0660 user = vmail } user = root } service imap-login { service_count = 1 vsz_limit = 64 M process_limit = 500 process_min_avail = 2 } service pop3-login { service_count = 1 vsz_limit = 64 M } service managesieve-login { inet_listener sieve { port = 4190 } service_count = 1 process_min_avail = 0 vsz_limit = 64M } service managesieve { process_limit = 1024 } service imap { executable = imap postlogin process_limit = 2048 } service pop3 { executable = pop3 postlogin } service postlogin { executable = script-login -d rawlog unix_listener postlogin { } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } ssl_ca = </etc/pki/tls/certs/DigiCertCA.crt ssl_cert = </etc/pki/tls/certs/star_noa_gr-1243437.crt ssl_key = </etc/pki/tls/private/star_noa_gr-1243437.key ssl_protocols = !SSLv2 !SSLv3 syslog_facility = local1 ----------------------------- CONFIG END -------------------------------- FILE: /etc/dovecot/dovecot-usrdb-ldap.conf hosts = localhost tls = no base = ou=people, dc=noa, dc=gr scope = onelevel ldap_version = 3 dn = uid=auth,ou=Sys,dc=noa,dc=gr dnpass = secret auth_bind = yes user_filter = (uid=%u) pass_filter = (uid=%u) pass_attrs = uid=user,userPassword=password auth_bind_userdn = uid=%u,ou=people,dc=noa,dc=gr user_attrs = roomNumber=quota_rule=*:bytes=%$,uid=home=/home/vmail/%u iterate_filter = (objectClass=*) ---------------------------------------------------------------------------------------- Thanks in advance, Nick

2 2

proxy-dict with tcp connection
by Ralf Becker 04 Aug '17

04 Aug '17

I try to create a patch to allow (proxy-)dict to use tcp connections instead of a unix domain socket. I'm replacing connection_init_client_unix with connection_init_client_ip: --- ./src/lib-dict/dict-client.c.orig +++ ./src/lib-dict/dict-client.c @@ -721,6 +721,10 @@ client_dict_init(struct dict *driver, const char *uri, struct ioloop *old_ioloop = current_ioloop; struct client_dict *dict; const char *p, *dest_uri, *path; + const char *const *args; + unsigned int argc; + struct ip_addr ip; + in_port_t port=0; unsigned int idle_msecs = DICT_CLIENT_DEFAULT_TIMEOUT_MSECS; unsigned int warn_slow_msecs = DICT_CLIENT_DEFAULT_WARN_SLOW_MSECS; @@ -772,7 +776,21 @@ client_dict_init(struct dict *driver, const char *uri, dict->warn_slow_msecs = warn_slow_msecs; i_array_init(&dict->cmds, 32); - if (uri[0] == ':') { + args = t_strsplit(uri, ":"); + for(argc=0; args[argc] != NULL; argc++); + + if (argc == 3) { /* host:ip:somewhere --> argc == 3 */ + if (net_addr2ip(args[0], &ip) < 0) { + *error_r = t_strdup_printf("Invalid IP: %s in URI: %s", args[0], uri); + return -1; + } + if (net_str2port(args[1], &port) < 0) { + *error_r = t_strdup_printf("Invalid port: %s in URI: %s", args[1], uri); + return -1; + } + dest_uri = strrchr(uri, ':'); + } else if (uri[0] == ':') { /* default path */ path = t_strconcat(set->base_dir, "/"DEFAULT_DICT_SERVER_SOCKET_FNAME, NULL); @@ -784,7 +802,13 @@ client_dict_init(struct dict *driver, const char *uri, path = t_strconcat(set->base_dir, "/", t_strdup_until(uri, dest_uri), NULL); } - connection_init_client_unix(dict_connections, &dict->conn.conn, path); + if (port > 0) { + connection_init_client_ip(dict_connections, &dict->conn.conn, &ip, port); + } else { + connection_init_client_unix(dict_connections, &dict->conn.conn, path); + } dict->uri = i_strdup(dest_uri + 1); dict->ioloop = io_loop_create(); But unfortunately this crashes: Jul 28 13:20:04 auth: Error: auth worker: Aborted PASSL request for info(a)outdoor-training.de: Worker process died unexpectedly Jul 28 13:20:04 auth-worker(705): Fatal: master: service(auth-worker): child 705 killed with signal 11 (core dumped) Jul 28 13:20:04 doveadm(10.44.88.1,info(a)outdoor-training.de): Error: user info(a)outdoor-training.de: Auth PASS lookup failed It looks like the tcp connection gets opened non-blocking and the first write / dict lookup happens to early: 4303041 13:44:25.120398220 0 auth (29884) < connect res=-115(EINPROGRESS) tuple=172.18.0.2:47552->10.44.99.180:2001 Looking at dict-memcached-ascii.c I probably need to do something like: i_array_init(&dict->input_states, 4); i_array_init(&dict->replies, 4); dict->ioloop = io_loop_create(); io_loop_set_current(old_ioloop); *dict_r = &dict->dict; to wait until the socket is ready ... Any idea / tips? Ralf -- Ralf Becker EGroupware GmbH [www.egroupware.org] Handelsregister HRB Kaiserslautern 3587 Geschäftsführer Birgit und Ralf Becker Leibnizstr. 17, 67663 Kaiserslautern, Germany Telefon +49 631 31657-0

2 2

rawlog
by Matt Bryant 04 Aug '17

04 Aug '17

Hi, Trying to get rawlog working on dovecot 2.2.31 configured as per https://wiki2.dovecot.org/Debugging/Rawlog but a) it doesnt appear to be loggin anything b) rawlog_dir which is supposed to be v2.2.26+ seems no where in site .. in fact complains about unknown variable So does rawlog still do anything ???? Or am I missing something ... config is below .... # 2.2.19: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.9 (357ac0a0e68b+) doveconf: Warning: service auth { client_limit=30000 } is lower than required under max. load (150032) doveconf: Warning: service anvil { client_limit=22000 } is lower than required under max. load (50027) # OS: Linux 3.10.0-327.4.4.el7.x86_64 x86_64 CentOS Linux release 7.2.1511 (Core) auth_cache_negative_ttl = 2 mins auth_cache_size = 10 M auth_cache_ttl = 10 mins auth_master_user_separator = * auth_mechanisms = plain login auth_worker_max_count = 10000 default_client_limit = 50000 default_process_limit = 50000 disable_plaintext_auth = no doveadm_password = # hidden, use -P to show it imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags imap_hibernate_timeout = 1 mins imap_idle_notify_interval = 1 mins login_greeting = IMAP/POP3 ready - dev-dh-ro-ms-001-b mail_attachment_dir = /var/lib/dovecot/attachments/%Ld mail_cache_min_mail_count = 5 mail_plugins = " notify replication quota virtual" mailbox_list_index = yes 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 vacation-seconds spamtest spamtestplus editheader mbox_write_locks = fcntl mmap_disable = yes namespace { inbox = yes list = yes location = mailbox Archive { auto = create special_use = \Archive } mailbox Drafts { auto = create special_use = \Drafts } mailbox Sent { auto = create special_use = \Sent } mailbox Spam { auto = create special_use = \Junk } mailbox Trash { auto = create special_use = \Trash } prefix = INBOX/ separator = / type = private } namespace { list = no location = virtual:/var/lib/dovecot/virtual:INDEXPVT=~/virtual prefix = virtual/ separator = / type = private } passdb { args = /etc/dovecot/sql_users.conf driver = sql } plugin { mail_log_events = delete expunge mail_log_fields = uid box msgid size mail_replica = tcp:dev-ms-001-a:4000 quota = dict:UserQuota::file:%h/dovecot-quota quota_rule2 = INBOX/Trash:storage=+10%% sieve = file:~/sieve/user;active=~/.dovecot.sieve sieve_default = file:/var/lib/dovecot/sieve/default.sieve sieve_default_name = default sieve_editheader_max_header_size = 1k sieve_extensions = +spamtest +spamtestplus +editheader +vacation-seconds sieve_global = file:/var/lib/dovecot/sieve sieve_quota_max_scripts = 5 sieve_spamtest_max_value = 200 sieve_spamtest_status_header = X-Spam-score-int: -?([[:digit:]]+) sieve_spamtest_status_type = score sieve_vacation_default_period = 10d sieve_vacation_max_period = 30d sieve_vacation_min_period = 1s } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_fast_size_lookups = yes protocols = imap pop3 lmtp sieve replication_dsync_parameters = -d -n INBOX -l 30 -U service aggregator { fifo_listener replication-notify-fifo { user = vmail } unix_listener replication-notify { user = vmail } } service anvil { client_limit = 22000 } service auth-worker { user = $default_internal_user } service auth { client_limit = 30000 unix_listener auth_client { mode = 0660 user = exim } } service doveadm { client_limit = 1 inet_listener { address = * port = 4000 } process_limit = 80 process_min_avail = 8 service_count = 10 } service imap-hibernate { client_limit = 8000 process_limit = 8 process_min_avail = 8 service_count = 0 unix_listener imap-hibernate { group = vmail mode = 0660 } } service imap-login { client_limit = 8000 inet_listener imap { port = 143 } process_limit = 8 process_min_avail = 8 service_count = 0 } service imap { client_limit = 1 process_limit = 50000 service_count = 100 } service managesieve-login { client_limit = 1000 inet_listener sieve { port = 4190 } process_limit = 8 process_min_avail = 8 service_count = 0 } service managesieve { process_limit = 1024 } service pop3-login { client_limit = 1000 inet_listener pop3 { port = 110 } process_limit = 8 process_min_avail = 8 service_count = 0 } service pop3 { process_limit = 10000 } service postlogin { executable = script-login -d rawlog unix_listener postlogin { group = atmail mode = 0660 } } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { group = atmail mode = 0660 } } shutdown_clients = no ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { driver = prefetch } userdb { args = /etc/dovecot/sql_users.conf driver = sql } protocol imap { mail_max_userip_connections = 30000 mail_plugins = " notify replication quota virtual imap_quota" } protocol pop3 { mail_max_userip_connections = 30000 mail_plugins = " notify replication quota virtual" } protocol lmtp { auth_username_format = %Lu mail_plugins = " notify replication quota virtual sieve quota" postmaster_address = mailer-daemon }

3 3

Re: rawlog
by Joseph Tam 04 Aug '17

04 Aug '17

Matt Bryant wrote: > a) it doesnt appear to be loggin anything > b) rawlog_dir which is supposed to be v2.2.26+ seems no where in site .. > in fact complains about unknown variable > ... > service postlogin { > executable = script-login -d rawlog > unix_listener postlogin { > group = atmail > mode = 0660 > } > } In my test setup, I use the first option protocol imap { ... rawlog_dir = /data/rawlogs/%u } You may also want it into your protocol pop3 section. Joseph Tam <jtam.home(a)gmail.com>

1 0

pam auth problem
by Randy Bush 03 Aug '17

03 Aug '17

# dovecot --version 2.2.31 (65cde28) on freebsd 64 10.3 system converted to dovecot 2 against my will and consuming a lot of time sorting it out. i am glad google does not charge. have spent two hours on this one alone; and undoubtedly it is my st00pidity. so excuse my desperate posting to lazynet. cram-md5 works, pam not so much Aug 3 06:06:35 psg auth: in openpam_parse_chain(): /etc/pam.d/dovecot(1): missing or invalid facility Aug 3 06:06:35 psg dovecot: auth-worker(48815): Error: pam(elb,2604:6000:130d:c31b:d250:99ff:fe90:14dd,<Lyh6LtNVMq8mBGAAEw3DG9JQmf/+kBTd>): pam_start() failed: system error Aug 3 06:06:35 psg auth: in openpam_parse_chain(): /etc/pam.d/dovecot(1): missing or invalid facility Aug 3 06:06:35 psg dovecot: auth-worker(48815): Error: pam(elb,2604:6000:130d:c31b:d250:99ff:fe90:14dd,<Lyh6LtNVMq8mBGAAEw3DG9JQmf/+kBTd>): pam_start() failed: system error # 2.2.31 (65cde28): /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 10.3-RELEASE-p20 amd64 auth_mechanisms = plain login cram-md5 first_valid_gid = 0 mail_location = mbox:~/mail/:INBOX=/var/mail/%u mail_privileged_group = mail namespace inbox { inbox = yes location = prefix = } passdb { args = scheme=cram-md5 /usr/local/etc/dovecot.cram-md5 driver = passwd-file name = passwd-file } passdb { driver = pam } passdb { driver = pam name = pam } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh protocols = imap pop3 service auth { unix_listener auth-userdb { group = mail } } service imap-login { inet_listener imaps { port = 993 ssl = yes } } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = # hidden, use -P to show it userdb { driver = passwd } # cat /etc/pam.d/dovecot passdb { driver = pam args = failure_show_msg=yes args = %s }

5 10