February 2014 - dovecot

[Dovecot] Windows 8 issues (using Live/Outlook)
by Eriberto 04 Mar '14

04 Mar '14

Hi! I am trying to make Windows 8 using Live 2012 and Outlook 2010 login in Dovecot POP3s. However, I receive this message in log: Feb 28 07:32:05 ipanema dovecot: pop3-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=10.0.0.10, lip=10.0.0.1, TLS handshaking: Disconnected, session=<joP78nTz9ACsFQAF> Note that user is sent as blank and this is the only log line. I used debug mode too: Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: elliptic curve secp384r1 will be used for ECDH and ECDHE key exchanges Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: elliptic curve secp384r1 will be used for ECDH and ECDHE key exchanges Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x10, ret=1: before/accept initialization [10.0.0.10] Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001, ret=1: before/accept initialization [10.0.0.10] Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client hello A [10.0.0.10] Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write server hello A [10.0.0.10] Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write certificate A [10.0.0.10] Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write server done A [10.0.0.10] Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2001, ret=1: SSLv3 flush data [10.0.0.10] Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client certificate A [10.0.0.10] Feb 28 09:07:07 ipanema dovecot: pop3-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client certificate A [10.0.0.10] Feb 28 09:07:07 ipanema dovecot: pop3-login: Warning: SSL failed: where=0x2002: SSLv3 read client certificate A [10.0.0.10] Feb 28 09:07:07 ipanema dovecot: auth: Debug: Loading modules from directory: /usr/lib/dovecot/modules/auth Feb 28 09:07:07 ipanema dovecot: auth: Debug: Read auth token secret from /var/run/dovecot/auth-token-secret.dat Feb 28 09:07:07 ipanema dovecot: auth: Debug: auth client connected (pid=8138) Feb 28 09:07:07 ipanema dovecot: pop3-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=10.0.0.10, lip=10.0.0.1, TLS handshaking: Disconnected, session=<QDraRnbzMwCsFQAF> Analysing the traffic with tshark, I can see: 0.007163 10.0.0.10 -> 10.0.0.1 TLSv1.2 331 Certificate, Server Hello Done I am using Dovecot 2.2.9 and I think it is TLS compatible. External (non-MS) clients, as Mozilla Thunderbird and Sylpheed, are working fine. Can someone point me a light? # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.4 ext4 Thanks in advanced. Regards, Eriberto

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[Dovecot] maildir quota divergence
by Juan Carlos Sanchez 03 Mar '14

03 Mar '14

Hello; We are using maildir quotas and have found differences in many users in respect to what system command are showing and doveadm quotas. For example, four user test, we have: doveadm quota get -u test Quota name Type Value Limit % STORAGE 98066 102400 95 MESSAGE 883 - 0 But if we check user mail_location with "du" system command we get he is using 70458 Kb. We are running dovecot 2.1.17 ¿any clue? Thanks in advance.

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[Dovecot] Force SSL authentication per user basis
by Urban Loesch 28 Feb '14

28 Feb '14

Hi, I'm searching a way to force encrypted connections for POP3/IMAP on a per user basis. To not break clients which still connect in plaintext (there are still many of it) I must implement a mechanism to force encrypted connections on a per user basis. The users and passwords are stored in a mysql database. So there would be no problem to expand the database with a column like "ssl_tls" -> yes/no. The problem now: how can I get dovecot to process this field in the right way? I searched the list and googled about such a way, but I can't find any solution. My Dovecot version is 2.2.12. Many thanks and regards Urban Loesch

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Re: [Dovecot] Logging authentication failures when Dovecot's auth service used to authenticate postfix smtpd
by MV 28 Feb '14

28 Feb '14

> in case of SASL postfix is talking via a unix socket so there is no connection IP dovecot knows about I don't not where Dovecot get the client IP from, but having auth socket in place, below is a redacted extract from my logs. As you can see Dovecot does know the client's IP. Dovecot config: auth_verbose = yes auth_debug = no # Dovecot log after submission/smtpd AUTH successful <nothing> # Dovecot log after submission/smtpd AUTH failure ... auth: Info: passwd-file(joe(a)example.com,46.z.z.z): Password mismatch Dovecot config: auth_verbose = yes auth_debug = yes # Dovecot log after submission/smtpd AUTH successful ... auth: Debug: client in: AUTH 1 PLAIN service=smtp nologin lip=212.x.x.x rip=46.z.z.z secured resp=<hidden> ... auth: Debug: passwd-file(joe(a)example.com,46.z.z.z): lookup: user=joe(a)example.com file=/etc/dovecot/virtual_users ... auth: Debug: client passdb out: OK 1 user=joe(a)example.com # Dovecot log after submission/smtpd AUTH failure ... auth: Debug: client in: AUTH 2 PLAIN service=smtp nologin lip=212.x.x.x rip=46.z.z.z secured resp=<hidden> ... auth: Info: plain(?,46.z.z.z): invalid input ... auth: Debug: client passdb out: FAIL 2 And regardless of Docecot config, postfix always logs the same stuff # Postfix log after submission/smtpd AUTH successful (QUIT after AUTH without sending RCPT TO) ... postfix/smtpd[5678]: connect from host.client.foo.tld[46.z.z.z] ... postfix/smtpd[5678]: disconnect from host.client.foo.tld[46.z.z.z] # Postfix log after submission/smtpd AUTH failure ... postfix/smtpd[1234]: connect from host.client.foo.tld[46.z.z.z] ... postfix/smtpd[1234]: warning: host.client.foo.tld[46.z.z.z]: SASL PLAIN authentication failed: ... postfix/smtpd[1234]: disconnect from host.client.foo.tld[46.z.z.z]

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[Dovecot] Logging authentication failures when Dovecot's auth service used to authenticate postfix smtpd
by MV 28 Feb '14

28 Feb '14

Hello, tl;dr: Is there a way to get dovecot's auth to log failed smtp authentications without having to switch on "auth_verbose"? postfix version 2.11.0 and dovecot version 2.2.12 I'm currently migrating my postfix+courier to postfix+dovecot and so far it's working as expected. Except for logging smtp login failures. Despite Postfix logging successful authentications (see sample below), it doesn't log failed smtp logins. Feb 25 22:28:53 mailer2 postfix/submission[20274]: C981B20198: client=A-B-C-D.*****.net[A.B.C.D]:63107, sasl_method=PLAIN, sasl_username=joe(a)example.net And since my postfix setup authenticates virtual users through Dovecot's auth, I thought maybe dovecot could report smtp login failures the same way it reports imap and pop3 login failures. Below is a sample extracted from "info_log_path" after several imap and pop3 login failures. (Obviously the IP 255.... is made up and irrelevant for this mater). # begin extract "/var/log/dovecot-info.log" 2014-02-27 21:14:26 auth: Info: passwd-file(joe(a)example.net,255.255.255.255,<Y0lbzmnzfwAuQV80>): Password mismatch 2014-02-27 21:16:46 auth: Info: passwd-file(foobar,255.255.255.255,<Y0lbzmnzfwAuQV80>): unknown user 2014-02-27 21:52:00 auth: Info: passwd-file(foo(a)example.net,255.255.255.255,<0Su6VGrzGwAuQV80>): unknown user 2014-02-27 21:53:35 auth: Info: plain(?,255.255.255.255,<0Su6VGrzGwAuQV80>): Empty username 2014-02-27 21:53:55 auth: Info: plain(?,255.255.255.255,<0Su6VGrzGwAuQV80>): Username character disallowed by auth_username_chars: 0x5c (username: \0) 2014-02-27 22:08:05 auth: Info: plain(?,255.255.255.255): invalid input 2014-02-27 22:09:36 auth: Info: passwd-file(joe(a)example.net,255.255.255.255): Password mismatch 2014-02-27 22:09:53 auth: Info: login(?,255.255.255.255): Empty username # end extract I've tried adding "-L -o info_log_path=/var/log/dovecot-info.log" to the both auth and auth-worker services but that yield nothing. ----------------------%<-------------------------------- auth_mechanisms = plain login auth_verbose = yes base_dir = /var/run/dovecot/ info_log_path = /var/log/dovecot-info.log log_path = /var/log/dovecot.log log_timestamp = "%Y-%m-%d %H:%M:%S " passdb { args = scheme=CRYPT username_format=%u /etc/dovecot/virtual_users driver = passwd-file } userdb { args = username_format=%u /etc/dovecot/virtual_users default_fields = uid=vmail gid=vmail driver = passwd-file override_fields = home=/home/vmail/%d/%u result_failure = return-fail result_internalfail = return-fail } service auth-worker { executable = auth -w -L -o info_log_path=/var/log/dovecot-info.log } service auth { executable = auth -L -o info_log_path=/var/log/dovecot-info.log unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix user = postfix mode = 0660 } } service lmtp { executable = lmtp -L -o info_log_path=/var/log/dovecot-info.log unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix user = postfix mode = 0660 } } ---------------------->%-------------------------------- The relevant postfix config is ... smtpd_sasl_type = dovecot smtpd_sasl_path = private/dovecot-auth virtual_transport = lmtp:unix:private/dovecot-lmtp

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[Dovecot] Dovecot2 vs. AD, "Inactivity during authentication"
by Jeroen Scheerder 28 Feb '14

28 Feb '14

Hi, I'm trying to setup Dovecot2 for o IMAP client access o LDA for postfix mail delivery (with SIEVE) ... on a FreeBSD host. The FreeBSD server has no users (by intention), so I've set up a virtual mail domain, using LDAP lookups in Postfix. So far so good. Mail delivers into the proper mailbox. But I'm stuck getting Dovecot to authenticate. User- and passwd DB's are set up for LDAP lookups to AD, using an authenticated bind (the AD server offers no anonymous binds, yet). I've enabled all the debugging I can find, but my logs have little information to offer. Any help in getting me a step further would be much appreciated. In particular, I'd like to learn how do diagnose these userdb/passdb issues properly. Here's what I see in the logs: Feb 27 12:25:49 <mail.info> ponyboy dovecot: imap-login: Disconnected: Inactivity during authentication (disconnected while authenticating, waited 172 secs): user=<>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured, session=<r/ERi2HzQAB/AAAB> Feb 27 12:26:42 <mail.err> ponyboy dovecot: auth: Error: PLAIN(js,127.0.0.1,<r/ERi2HzQAB/AAAB>): Request 74099.1 timed out after 225 secs, state=1 This logging is related to the folloging IMAP session: ponyboy% telnet localhost 143 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] Dovecot ready. a login js suppressed * OK Waiting for authentication process to respond.. * BYE Disconnected for inactivity during authentication. Connection closed by foreign host. Here's my config: $ dovecot -n # 2.2.10: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 10.0-RELEASE amd64 ufs auth_debug = yes auth_mechanisms = plain login auth_username_format = %Ln auth_verbose = yes first_valid_gid = 1000 first_valid_uid = 1000 imap_client_workarounds = delay-newmail last_valid_gid = 1000 last_valid_uid = 1000 mail_gid = 1000 mail_location = maildir:/var/mail/on2it/%Ln mail_uid = 1000 maildir_very_dirty_syncs = 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 { args = /usr/local/etc/dovecot/on2it-ldap-users.cfg driver = ldap } protocols = imap service auth-worker { user = root } service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } unix_listener auth-userdb { group = postfix mode = 0666 user = postfix } } service imap-login { inet_listener imap { port = 143 } } shutdown_clients = no ssl = no userdb { args = /usr/local/etc/dovecot/on2it-ldap-users-userdb.cfg driver = ldap } valid_chroot_dirs = /var/mail/on2it $ cat /usr/local/etc/dovecot/on2it-ldap-users.cfg hosts = dc2.office.on2it.net ldap_version = 3 base = dc=office,dc=on2it,dc=net scope=subtree auth_bind = yes dn = [suppressed] dnpass = [suppressed] pass_attrs = sAMAccountName=user user_attrs = \ =home=/var/mail/on2it/%{ldap:sAMAccountName}, \ =mail=maildir:/var/mail/on2it/%{ldap:sAMAccountName} user_filter = (&(ObjectClass=person)(sAMAccountName=%u)) pass_filter = (&(ObjectClass=person)(sAMAccountName=%u)) iterate_attrs = sAMAccountName=user iterate_filter = (objectClass=person) $ ls -l /usr/local/etc/dovecot/on2it-ldap-users-userdb.cfg lrwxr-xr-x 1 root wheel 20 Feb 27 12:07 /usr/local/etc/dovecot/on2it-ldap-users-userdb.cfg -> on2it-ldap-users.cfg

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Re: [Dovecot] Error "Initializing mail storage ..." after upgrading to 2.2.10
by Joseph Tam 28 Feb '14

28 Feb '14

G?tz Reinicke writes: > mail_location = mbox:~/:INBOX=/var/mail/%u > ... > Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, > list=yes, subscriptions=yes > location=mbox:~/:INBOX=/var/mail/rechnungseingang-animationsinstitut > Feb 27 17:02:11 imap(rechnungseingang-animationsinstitut): Error: user > rechnungseingang-animationsinstitut: Initialization failed: Namespace > '': Home directory not set for user. Can't expand ~/ for mail root dir > in: ~/:INBOX=/var/mail/rechnungseingang-animationsinstitut Hmm, I don't have a trialing '/' in my mail_location, so maybe you can try leaving it off too just to check. mbox:~:INBOX=/var/mail/%u Also, is your home directory well defined in your userdb? Check output of doveadm user rechnungseingang-animationsinstitut Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] Quota-Status issue
by Cyberonic Turbo 27 Feb '14

27 Feb '14

Following this guide: http://sys4.de/en/blog/2013/04/08/postfix-dovecot-mailbox-quota/ I can't seem to get it to work, as soon as I add the smtpd_recipient_restrictions setting to postfix I can no longer send mail at all. I get the message SMTP Error (450): Failed to add recipient "postmaster(a)example.com" (4.7.1 : Recipient address rejected: Internal error occurred. Refer to server log for more information.). I googled around and found this command to test the quota-status service: printf "recipient=postmaster at example.com\nsize=1234\n\n" | nc 127.0.0.1 12340 It seems to always return the quota_status_nouser message. I'm really stumped here. What logs do I need to check for errors and does anyone have any experience with this? I'm running Dovect 2.2.10 with Postfix 2.6.6 Here's my dovecot -n result: # 2.2.10: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-431.5.1.el6.x86_64 x86_64 CentOS release 6.5 (Final) auth_master_user_separator = * auth_mechanisms = PLAIN LOGIN dict { acl = mysql:/etc/dovecot/dovecot-share-folder.conf quotadict = mysql:/etc/dovecot/dovecot-used-quota.conf } first_valid_uid = 2000 last_valid_uid = 2000 listen = * log_path = /var/log/dovecot.log mail_gid = 2000 mail_location = maildir:/%Lh/Maildir/:INDEX=/%Lh/Maildir/ mail_plugins = quota mail_uid = 2000 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 { inbox = yes location = prefix = separator = / type = private } namespace { list = children location = maildir:/%%Lh/Maildir/:INDEX=/%%Lh/Maildir/Shared/%%u prefix = Shared/%%u/ separator = / subscriptions = yes type = shared } passdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } passdb { args = /etc/dovecot/dovecot-master-users-password driver = passwd-file master = yes } plugin { acl = vfile acl_shared_dict = proxy::acl auth_socket_path = /var/run/dovecot/auth-master autocreate = INBOX autocreate2 = Sent autocreate3 = Trash autocreate4 = Drafts autocreate5 = Junk autosubscribe = INBOX autosubscribe2 = Sent autosubscribe3 = Trash autosubscribe4 = Drafts autosubscribe5 = Junk quota = dict:user::proxy::quotadict quota_grace = 10%% quota_rule = *:storage=1G quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 Mailbox is full quota_status_success = DUNNO quota_warning = storage=85%% quota-warning 85 %u quota_warning2 = storage=90%% quota-warning 90 %u quota_warning3 = storage=95%% quota-warning 95 %u sieve = /%Lh/sieve/dovecot.sieve sieve_dir = /%Lh/sieve sieve_global_dir = /var/vmail/sieve sieve_global_path = /var/vmail/sieve/dovecot.sieve } protocols = pop3 imap sieve service auth { unix_listener /var/spool/postfix/dovecot-auth { group = postfix mode = 0666 user = postfix } unix_listener auth-master { group = vmail mode = 0666 user = vmail } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service dict { unix_listener dict { group = vmail mode = 0660 user = vmail } } service imap-login { process_limit = 500 service_count = 1 } service pop3-login { service_count = 1 } service quota-status { client_limit = 1 executable = quota-status -p postfix inet_listener { port = 12340 } } service quota-warning { executable = script /usr/local/bin/dovecot-quota-warning.sh unix_listener quota-warning { group = vmail mode = 0660 user = vmail } } ssl = required ssl_cert = </etc/pki/tls/certs/iRedMail_CA.pem ssl_key = </etc/pki/tls/private/iRedMail.key userdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } protocol lda { auth_socket_path = /var/run/dovecot/auth-master lda_mailbox_autocreate = yes log_path = /var/log/sieve.log mail_plugins = quota sieve autocreate postmaster_address = root } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_plugins = quota imap_quota autocreate } protocol pop3 { mail_plugins = quota pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } For my postfix/main.cf I have this relevant setting: smtpd_recipient_restrictions = reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unlisted_recipient, check_policy_service inet:127.0.0.1:7777, check_policy_service inet:127.0.0.1:10031, check_policy_service inet:127.0.0.1:12340, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination

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Re: [Dovecot] Error "Initializing mail storage ..." after upgrading to 2.2.10
by Joseph Tam 27 Feb '14

27 Feb '14

G?tz Reinicke - IT Koordinator <goetz.reinicke(a)filmakademie.de> wrote: > But on one mailbox I do get an error: > > Error: user rechnnugseingang-animationsinstitut: Initialization failed: > Initializing mail storage from mail_location setting failed > > Error: Invalid user settings. Refer to server log for more information. And the server logs says ...? Maybe the '-' is not one of the allowed characters (is there a missing 'e' at the end?) Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] dsync mirror to mailstores in director setup
by Murray Trainer 27 Feb '14

27 Feb '14

Hi All, I have dsync mirror command working between a standalone dovecot server and a backend mailstore in a Dovecot Director setup. Is it safe to do the dsync directly to the backend mailstore in this setup? It doesn't seem to work via the director proxy. Thanks Murray

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