- dovecot - dovecot.org

Re: [Dovecot] Calling dovecot-lda from within Antispam pipe script (bash) seems to have no effect
by Joseph Tam 22 Jun '13

22 Jun '13

Ben Johnson <ben(a)indietorrent.org> writes: > I added debugging output to the script, which now prints the environment > variables. My script now outputs the following: > ... > CONFIG_FILE=/var/run/dovecot/config > ... > Does anything jump-out at you? You didn't provide the analogous output from the interactive shell to see the differences (for example, USER might be being used), but from your later strace, I guess CONFIG_FILE has something to do with it. These threads seems relevant http://www.dovecot.org/list/dovecot/2011-May/059127.html http://www.mail-archive.com/dovecot@dovecot.org/msg38349.html That thread poster solved his problem by commenting out service imap-postlogin { # user = $default_internal_user ... } but I have no idea if it works, or whether it's a good idea, for your case. More docs http://wiki2.dovecot.org/PostLoginScripting Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] Getting NTLM authentication for Postfix SMTP clients to work
by Matthew Larsen 22 Jun '13

22 Jun '13

I'm trying to get NTLM authentication working with Dovecot to authenticate Postfix SMTP clients. I can authenticate postfix smtp clients using the plain text login mechanism through winbind. However, using the NTLM mechanism gives me an error in my maillog that says: "dovecot: auth: winbind(?,10.20.2.0): user not authenticated: NT_STATUS_UNSUCCESSFUL". At this point, I'm rather stuck. It appears PAM and winbind work for authenticating with AD because it works with the plain text mechanism, but I'm missing something with the NTLM authentication method. Any suggestions as to what I've got wrong, or other logging I can turn up / examine that might shed some light on this? When I use the LOGIN mechanism I see this in the mail logging and the message is relayed: Jun 21 13:12:58 SBSMTPNV05 postfix/smtpd[1501]: connect from nvit01b.mydomain.com[10.20.2.**0] Jun 21 13:12:58 SBSMTPNV05 dovecot: auth: Debug: auth client connected (pid=1501) Jun 21 13:12:58 SBSMTPNV05 dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=**smtp#011nologin#011lip=10.20.**4 .12#011rip=10.20.2.0#011resp=**AG[...snip...]g== Jun 21 13:12:58 SBSMTPNV05 dovecot: auth: Debug: pam(myusername,10.20.2.0): lookup service=dovecot Jun 21 13:12:58 SBSMTPNV05 dovecot: auth: Debug: pam(myusername,10.20.2.0): #1/1 style=1 msg=Password: Jun 21 13:12:58 SBSMTPNV05 dovecot: auth: Debug: client out: OK#0111#011user=myusername Jun 21 13:12:58 SBSMTPNV05 postfix/smtpd[1501]: 54EAF8059B: client= nvit01b.mydomain.com[**10.20.2.0], sasl_method=PLAIN, sasl_username=myusername Jun 21 13:12:58 SBSMTPNV05 postfix/cleanup[1504]: 54EAF8059B: message-id=< 51C4B3C8.30008(a)**domain1.com <51C4B3C8.30008(a)domain1.com>> Jun 21 13:12:58 SBSMTPNV05 postfix/qmgr[1499]: 54EAF8059B: from=< someone(a)domain1.com>, size=2700, nrcpt=1 (queue active) Jun 21 13:12:58 SBSMTPNV05 postfix/smtpd[1501]: disconnect from nvit01b.mydomain.com[10.20.2.**0] Jun 21 13:12:59 SBSMTPNV05 postfix/smtp[1505]: 54EAF8059B: to=< someone(a)gmail.com>, relay=gmail-smtp-in.l.google.**com<http://gmail-smtp-in.l.google.com/>[74.125.25.27]:25, delay=1.2, delays=0.23/0.04/0.16/0.72, dsn=2.0.0, status=sent (250 2.0.0 OK 1371845579 wf5si3786287pab.138 - gsmtp) Jun 21 13:12:59 SBSMTPNV05 postfix/qmgr[1499]: 54EAF8059B: removed I also see this in the secure log: Jun 21 13:12:58 SBSMTPNV05 auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=myusername rhost=10.20.2.0 user=myusername Jun 21 13:12:58 SBSMTPNV05 auth: pam_winbind(dovecot:auth): getting password (0x00000010) Jun 21 13:12:58 SBSMTPNV05 auth: pam_winbind(dovecot:auth): pam_get_item returned a password Jun 21 13:12:58 SBSMTPNV05 auth: pam_winbind(dovecot:auth): user 'myusername' granted access Jun 21 13:12:58 SBSMTPNV05 auth: pam_winbind(dovecot:account): user 'myusername' granted access However, when I switch the mechanism to NTLM in the Thurnderbird MUA I see this: Jun 21 13:15:46 SBSMTPNV05 postfix/smtpd[1506]: connect from nvit01b.mydomain.com[10.20.2.**0] Jun 21 13:15:46 SBSMTPNV05 dovecot: auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth Jun 21 13:15:46 SBSMTPNV05 dovecot: auth: Debug: Module loaded: /usr/lib64/dovecot/auth/**libauthdb_ldap.so Jun 21 13:15:46 SBSMTPNV05 dovecot: auth: Debug: Module loaded: /usr/lib64/dovecot/auth/**libdriver_sqlite.so Jun 21 13:15:46 SBSMTPNV05 dovecot: auth: Debug: Module loaded: /usr/lib64/dovecot/auth/**libmech_gssapi.so Jun 21 13:15:46 SBSMTPNV05 dovecot: auth: Debug: auth client connected (pid=1506) Jun 21 13:15:46 SBSMTPNV05 dovecot: auth: Debug: client in: AUTH#0111#011NTLM#011service=**smtp#011nologin#011lip=10.20.**4. 12#011rip=10.20.2.0#011resp=**TlRMT[...snip...]A= Jun 21 13:15:46 SBSMTPNV05 dovecot: auth: Debug: client out: CONT#0111#011TlRMT[[...snip...**]A Jun 21 13:15:46 SBSMTPNV05 dovecot: auth: Debug: client in: CONT#0111#011TlRMT[...snip...]**A= Jun 21 13:15:46 SBSMTPNV05 dovecot: auth: winbind(?,10.20.2.0): user not authenticated: NT_STATUS_UNSUCCESSFUL Jun 21 13:15:48 SBSMTPNV05 postfix/smtpd[1506]: warning: nvit01b.mydomain.com[10.20.2.**0]: SASL NTLM authentication failed: TlRMT[...snip...]A Jun 21 13:15:48 SBSMTPNV05 dovecot: auth: Debug: client out: FAIL#0111 Jun 21 13:15:49 SBSMTPNV05 postfix/smtpd[1506]: disconnect from nvit01b.mydomain.com[10.20.2.**0] with nothing in the secure log and I don't see anything show up in the winbind logs either. I've reviewed these pages as reference, and I'm not sure what I'm missing: http://wiki2.dovecot.org/**HowTo/ActiveDirectoryNtlm<http://wiki2.dovecot.org/HowTo/ActiveDirectoryNtlm> http://wiki2.dovecot.org/**Authentication/Mechanisms/NTLM<http://wiki2.dovecot.org/Authentication/Mechanisms/NTLM> http://www.dovecot.org/list/**dovecot/2008-December/035630.**html<http://www.dovecot.org/list/dovecot/2008-December/035630.html> http://www.dovecot.org/list/**dovecot/2010-February/046763.**html<http://www.dovecot.org/list/dovecot/2010-February/046763.html> http://blog.al-shami.net/2008/**05/freebsd-postfix-dovecot-** and-active-directory/<http://blog.al-shami.net/2008/05/freebsd-postfix-dovecot-and-active-directo…> http://wiki2.dovecot.org/**HowTo/PostfixAndDovecotSASL<http://wiki2.dovecot.org/HowTo/PostfixAndDovecotSASL> Here's some of my relevant configuration as I understand it: I've joined the computer to the AD domain. The wbinfo tests work fine: # wbinfo -t checking the trust secret for domain MYDOMAIN via RPC calls succeeded # doveconf -n # 2.0.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-358.11.1.el6.x86_64 x86_64 CentOS release 6.4 (Final) auth_debug_passwords = yes auth_mechanisms = plain ntlm login auth_use_winbind = yes auth_username_format = %Lu listen = * mbox_write_locks = fcntl passdb { driver = pam } service auth { unix_listener /var/spool/postfix/private/**auth { group = postfix mode = 0666 user = postfix } } ssl_cert = </etc/pki/dovecot/certs/**dovecot.pem ssl_key = </etc/pki/dovecot/private/**dovecot.pem userdb { driver = passwd } //////////////////// # postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 7 html_directory = no inet_interfaces = all inet_protocols = ipv4 line_length_limit = 6144 mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost myhostname = srvsbsmtp05.mydomain.com newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.6.6/**README_FILES sample_directory = /usr/share/doc/postfix-2.6.6/**samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtpd_recipient_restrictions = permit_sasl_authenticated,**reje ct_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_path = private/auth smtpd_sasl_type = dovecot unknown_local_recipient_**reject_code = 550 ///////////////////// # cat /etc/krb5.conf [logging] default = FILE:/var/log/krb5libs.log kdc = FILE:/var/log/krb5kdc.log admin_server = FILE:/var/log/kadmind.log [libdefaults] default_realm = MYDOMAIN.COM <http://mydomain.com/> dns_lookup_realm = true dns_lookup_kdc = true ticket_lifetime = 24h renew_lifetime = 7d forwardable = true [domain_realm] .mydomain.com = MYDOMAIN.COM <http://mydomain.com/> mydomain.com = MYDOMAIN.COM <http://mydomain.com/> //////////////////// system keytab: # klist -ke Keytab name: FILE:/etc/krb5.keytab KVNO Principal ---- ------------------------------**------------------------------** -------------- 3 host/sbsmtpnv05.mydomain.com(a)**MYDOMAIN.COM<sbsmtpnv05.mydomain.com(a)MYDOMAIN.COM> (des-cbc-crc) 3 host/sbsmtpnv05.mydomain.com(a)**MYDOMAIN.COM<sbsmtpnv05.mydomain.com(a)MYDOMAIN.COM> (des-cbc-md5) 3 host/sbsmtpnv05.mydomain.com(a)**MYDOMAIN.COM<sbsmtpnv05.mydomain.com(a)MYDOMAIN.COM> (arcfour-hmac) 3 host/sbsmtpnv05.mydomain.com(a)**MYDOMAIN.COM<sbsmtpnv05.mydomain.com(a)MYDOMAIN.COM> (aes128-cts-hmac-sha1-96) 3 host/sbsmtpnv05.mydomain.com(a)**MYDOMAIN.COM<sbsmtpnv05.mydomain.com(a)MYDOMAIN.COM> (aes256-cts-hmac-sha1-96) 3 host/sbsmtpnv05(a)MYDOMAIN.COM (des-cbc-crc) 3 host/sbsmtpnv05(a)MYDOMAIN.COM (des-cbc-md5) 3 host/sbsmtpnv05(a)MYDOMAIN.COM (arcfour-hmac) 3 host/sbsmtpnv05(a)MYDOMAIN.COM (aes128-cts-hmac-sha1-96) 3 host/sbsmtpnv05(a)MYDOMAIN.COM (aes256-cts-hmac-sha1-96) 3 SBSMTPNV05$(a)MYDOMAIN.COM <http://mydomain.com/> (des-cbc-crc) 3 SBSMTPNV05$(a)MYDOMAIN.COM <http://mydomain.com/> (des-cbc-md5) 3 SBSMTPNV05$(a)MYDOMAIN.COM <http://mydomain.com/> (arcfour-hmac) 3 SBSMTPNV05$(a)MYDOMAIN.COM <http://mydomain.com/> (aes128-cts-hmac-sha1-96) 3 SBSMTPNV05$(a)MYDOMAIN.COM <http://mydomain.com/> (aes256-cts-hmac-sha1-96) 5 smtp/sbsmtpnv05.mydomain.com(a)**MYDOMAIN.COM<sbsmtpnv05.mydomain.com(a)MYDOMAIN.COM> (des-cbc-crc) 5 smtp/sbsmtpnv05.mydomain.com(a)**MYDOMAIN.COM<sbsmtpnv05.mydomain.com(a)MYDOMAIN.COM> (des-cbc-md5) 5 smtp/sbsmtpnv05.mydomain.com(a)**MYDOMAIN.COM<sbsmtpnv05.mydomain.com(a)MYDOMAIN.COM> (arcfour-hmac) 5 smtp/sbsmtpnv05.mydomain.com(a)**MYDOMAIN.COM<sbsmtpnv05.mydomain.com(a)MYDOMAIN.COM> (aes128-cts-hmac-sha1-96) 5 smtp/sbsmtpnv05.mydomain.com(a)**MYDOMAIN.COM<sbsmtpnv05.mydomain.com(a)MYDOMAIN.COM> (aes256-cts-hmac-sha1-96) //////////////////// Samba config: [global] workgroup = MYDOMAIN realm = MYDOMAIN.COM <http://mydomain.com/> server string = Samba Server Version %v security = ADS kerberos method = system keytab log file = /var/log/samba/log.%m max log size = 50 printcap name = /dev/null domain master = No template shell = /bin/bash winbind separator = + winbind use default domain = Yes idmap config * : range = 10000-50000 idmap config * : backend = tdb printing = bsd cups options = raw print command = lpr -r -P'%p' %s lpq command = lpq -P'%p' lprm command = lprm -P'%p' %j

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[Dovecot] Sieve Plugin Setup
by Denny Jones 22 Jun '13

22 Jun '13

I've got an existing setup that I want to add Sieve filtering to. I'm on QmailToaster: qmailadmin-toaster-1.2.16-1.4.0 I using Dovecot version 2.0.11 I'm looking for a good tutorial for installing Sieve Rules functionality on an existing system. Anybody know of one? Anybody else done this? Do I just install the latest Dovecot-sieve plugin release with wget, etc? What kind of configuration can I expect to have to go through. Do I have to reconfigure Dovecot to work in conjunction with the Sieve plugin? I'm hoping to find someone else has done this that can help me navigate the waters so-to-speak. Thanks in advance, Denny

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[Dovecot] Pound Sign # in password
by Jackie Lowery 21 Jun '13

21 Jun '13

Is there any way to use a pound sign # in my postfix user password in the dovecot sql configuration file.

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Re: [Dovecot] Calling dovecot-lda from within Antispam pipe script (bash) seems to have no effect
by Joseph Tam 21 Jun '13

21 Jun '13

Ben Johnson writes: > It really boils-down to the fact that I can call the following on the > command-line and it functions as expected: > > su vmail -c '/usr/lib/dovecot/deliver -a "sa-training(a)example.com" -d > "sa-training(a)example.com" -m "Training.SPAM" -p > "/tmp/sendmail-msg-25794.txt"' > > Yet, when I attempt to do the exact same thing from within the pipe > script that Dovecot Antispam calls, I receive exit code 75 from > deliver/dovecot-lda and absolutely nothing is logged, with exception of > the information of which I'm already aware (logged to syslog). Have you also checked the environment variables? I think dovecot-lda gets some information from them. Also, it's possible the PATH or some other critical environment variables is different, causing the difference in outcome. Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] LDA Connection Refused with auth-userdb
by Adam Ramirez 21 Jun '13

21 Jun '13

Hi there, I've encountered an issue with the LDA in which I get a "Connection refused" error. There is a serverfault question ( http://serverfault.com/questions/517262/dovecot-with-postfix-configuration-…) if you would like to read that version, otherwise, the details are as follows: Dovecot 2.0.19 Postfix 2.9.6 Ubuntu 12.04 The actual error message I receive is --------------------------------------------------------------- postfix/pickup[16842]: 019023A06AB: uid=1000 from=<vagrant> postfix/cleanup[19542]: 019023A06AB: message-id= <20130620140358.019023A06AB@mail-server-berkshelf> postfix/qmgr[16843]: 019023A06AB: from=<vagrant(a)mail-server-berkshelf.localdomain>, size=382, nrcpt=1 (queue active) dovecot: lda: Debug: Loading modules from directory: /usr/lib/dovecot/modules dovecot: lda: Debug: Module loaded: /usr/lib/dovecot/modules/lib90_sieve_plugin.so ---> dovecot: lda: Error: userdb lookup: connect(/var/run/dovecot/auth-userdb) failed: Connection refused dovecot: lda: Fatal: Internal error occurred. Refer to server log for more information. postfix/pipe[19545]: 019023A06AB: to=<test(a)chefdovecot.com>, relay=dovecot, delay=1.2, delays=0.04/0.01/0/1.1, dsn=4.3.0, status=deferred (temporary failure) dovecot -n snippet: -------------------------------------------------------------- # 2.0.19: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-23-generic x86_64 Ubuntu 12.04 LTS ext4 auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain login auth_socket_path = /var/run/dovecot/auth-userdb auth_verbose = yes auth_verbose_passwords = plain mail_debug = yes mail_location = maildir:/var/vmail/%d/%n/Maildir 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 passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } postmaster_address = info(a)*****.com protocols = imap pop3 sieve imap pop3 service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0644 user = vmail } user = dovecot } service managesieve-login { inet_listener sieve { port = 4190 } } ssl = no ssl_cert = </etc/ssl/certs/star_***_com.crt ssl_key = </etc/ssl/private/star_***_com.key userdb { args = uid=5000 gid=5000 home=/var/vmail/%d/%n allow_all_users=yes driver = static } verbose_ssl = yes protocol lda { info_log_path = /var/log/dovecot-lda.log log_path = /var/log/dovecot-lda-errors.log mail_plugins = sieve } protocol imap { mail_max_userip_connections = 20 } Extra from auth-sql ----------------------------------------- userdb { driver = static args = uid=vmail gid=vmail home=/var/vmail/%d/%n allow_all_users=yes } File permissions on auth-userdb ----------------------------------------- srw-r--r-- 1 vmail vmail 0 Jun 20 13:04 /var/run/dovecot/auth-userdb I have tried changing the permissions and owner of auth-userdb to 777 and dovecot:dovecot, but there wasn't a change. Any leads or ideas are appreciated. I'm happy to research on my own, but atm I'm not sure where to continue looking. Adam

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[Dovecot] Would attempting plaintext auth repeatably cause a DOS and server to crash?
by Hugh Davenport 21 Jun '13

21 Jun '13

Hey All, I'm just wondering whether this is what caused my server to crash. Started last night in NZ land. Jun 20 19:22:11 elm dovecot: imap-login: Disconnected (tried to use disallowed plaintext auth): user=<>, rip=attackerip, lip=10.0.0.3, session=<0C8LzpDfZQDINsQC> occasionally get Jun 20 19:22:52 elm dovecot: imap-login: Disconnected (no auth attempts in 1 secs): user=<>, rip=attackerip, lip=10.0.0.3, session=<bHdz0JDfpwDINsQC> or in 0 secs last at Jun 20 19:26:24 elm dovecot: imap-login: Disconnected (tried to use disallowed plaintext auth): user=<>, rip=attackerip, lip=10.0.0.3, session=<1MUR3ZDfcwDINsQC> and a minute later the server lost contact to the world. When I checked a bit later, the underlying host machine (dovecot runs on a VM (KVM)) had been powered off. Now, here in NZ land, there was also a crazy storm last night, and lots of brown outs. There could potentially of been a surge that killed it, but the UPS was still running fine when I started it again. The "attack" lasted around 4 minutes, in which there was 1161 lines in the log for a single attacker ip, and no other similar logs previously. Would this be enough to kill not only the VM running dovecot, but the underlying host machine? All up to date with patches, running debian stable (wheezy). dovecot-core debian package version 1:2.1.7-7 dovecot version 2.1.7 I notice there is a version 2.2.3 out, but not in debian yet. Could this fix this issue? I don't particularly want to have it happen again :D. Any thoughts? Cheers, Hugh

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[Dovecot] Allowing clients to test their Sieve scripts
by Frerich Raabe 21 Jun '13

21 Jun '13

Hi, One thing which came up repeatedly is that clients using the IMAP server I run (using Dovecot 2.1) wonder whether they broke their Sieve scripts, i.e. it often goes like "I don't know whether I just didn't receive any mail, or whether my filters broke. Can you check the logs?". I then usually just run the sieve-test binary (part of the Pigeonhole distribution) and send them the output. However, I was wondering - is there maybe a way for them to try it themselves? Like, maybe a tiny web server which just prints a form asking for a mail file and a sieve script, and then it runs sieve-script and prints the output of that? I wonder how other people do that. -- Frerich Raabe - raabe(a)froglogic.com www.froglogic.com - Multi-Platform GUI Testing

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[Dovecot] doveadm move syntax
by vincent truc 20 Jun '13

20 Jun '13

Hello I want to forward an email to user1(a)domain.com box to the box user2(a)domain.com For this I try to use 'doveadm move', but I'm having problems with the syntax. Could you give me an example please? thanks

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[Dovecot] MySQL tables and official documenttation
by Mohsen Pahlevanzadeh 20 Jun '13

20 Jun '13

Dear all, Unfortunately, i created my tables according to the older tutorial, i search in dovecot.org and postfix.org but i didn't find any official documentation for tables. I want to use PF 2.10 and dovecot 2. Its tutorial was wrote on debian etch. eatch is very old. ---mohsen

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