- dovecot - dovecot.org

[Dovecot] Disable PAM username change?
by George 28 Aug '13

28 Aug '13

Hi! I have a problem involving Samba4, exim4, fetchmail, Dovecot and PAM... I am using Dovecot 2.1.7 on Debian Wheezy. I have setup a "maildrop" machine, which fetches mail from an external POP3 server for multiple accounts using fetchmail, delivers to local users mailboxes through exim4 and then serves them on the intranet via IMAP with Dovecot. This works great with local unix users, but I am having some trouble to configure it to work with Samba4 AD users (Samba 4.0.9 running as a DC on the same machine). Basically, I have configured PAM with winbind and it works fine (AD users can SSH the machine for example). Dovecot also authenticates properly via PAM, but the problem is that the username gets changed in the process (PAM returrns the "username" as "DOMAIN\username"): Aug 21 22:50:22 dc2 dovecot: auth-worker(5179): Debug: auth(foo,127.0.0.1): username changed foo -> DOMAIN\foo Aug 21 22:50:22 dc2 dovecot: auth: Debug: auth(foo,127.0.0.1,<0bBfg3/kpQB/AAAB>): username changed foo -> DOMAIN\foo Aug 21 22:50:22 dc2 dovecot: auth: Debug: client out: OK#0111#011user=DOMAIN\foo So the actual problem is that exim4 is delivering the mail to, for example, "/var/mail/foo" but Dovecot is looking for the mailbox on "/var/mail/DOMAIN\foo", even if the username given in the IMAP session is just "foo". The wiki mentions<http://wiki2.dovecot.org/PasswordDatabase/PAM>that "a PAM module can change the username". Can this be avoided? I need either: * Exim to deliver the mail to the user mailbox, *including* the domain part (out of scope of this list, but information is welcome), or * Dovecot to fetch the mail *not* using the domain part as part of the username variable. As a quick and dirty workaround, I hardcoded the domain part in the exim delivery path (something like "/var/mail/DOMAIN\\$local_part"), but this is far from optimal since I cannot use both unix users and AD users, I cannot use dovecot_delivery LDA transport, etc. As a bottom line, I also posted this to the Samba list because I believe this could also be solved if winbind just always returned the username without the domain when queried (conf option not working, probable bug) Ideas are welcome!! Best regards, Jorge

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[Dovecot] Install of Dovecot 2.2.5 on Solaris 10/Openssl version 0.9.7d 17 Mar 2004
by Haney, Donald 28 Aug '13

28 Aug '13

Greetings! I am attempting to install Dovecot 2.2.5 on Solaris 10 Sparc hardware with openssl version 0.9.7d 17 Mar 2004. I have created a dovecot user and a dove null user, assigned them their own login directories specifying the ksh shell and assigned them to their own groups. I have run the configure command successfully and am having trouble with the make. At first, I received the problem listed below: /bin/bash ../../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I../.. -I../../src/lib -I../../src/lib-test -DMODULE_DIR=\""/usr/local/lib/dovecot"\" -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno-builtin-strftime -I/usr/sfw/include -MT iostream-openssl-context.lo -MD -MP -MF .deps/iostream-openssl-context.Tpo -c -o iostream-openssl-context.lo iostream-openssl-context.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I../.. -I../../src/lib -I../../src/lib-test -DMODULE_DIR=\"/usr/local/lib/dovecot\" -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno-builtin-strftime -I/usr/sfw/include -MT iostream-openssl-context.lo -MD -MP -MF .deps/iostream-openssl-context.Tpo -c iostream-openssl-context.c -fPIC -DPIC -o .libs/iostream-openssl-context.o iostream-openssl-context.c: In function `ssl_proxy_ctx_set_crypto_params': iostream-openssl-context.c:451: error: `SSL_OP_SINGLE_ECDH_USE' undeclared (first use in this function) iostream-openssl-context.c:451: error: (Each undeclared identifier is reported only once iostream-openssl-context.c:451: error: for each function it appears in.) I followed directions found in http://hg.dovecot.org/dovecot-2.2/rev/27ebd9552471 to resolve this problem (I believe). I am now seeing the following error: test-http-server.c: In function `main': test-http-server.c:122: error: size of array `type name' is negative *** Error code 1 make: Fatal error: Command failed for target `test-http-server.o' Current working directory /export/home/hanedo00/dovecot-2.2.5/src/lib-http *** Error code 1 The following command caused the error: fail= failcom='exit 1'; \ for f in x $MAKEFLAGS; do \ case $f in \ *=* | --[!k]*);; \ *k*) failcom='fail=yes';; \ esac; \ done; \ dot_seen=no; \ I have not had any luck thus far finding the solution for this error against test-http-server.o. Any assistance would be appreciated. Thanks, Don Haney This message and any attachments are solely for the use of intended recipients. The information contained herein may include trade secrets, protected health or personal information, privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you are not an intended recipient, you are hereby notified that you received this email in error, and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. Thank you for your cooperation

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[Dovecot] Trouble with case-sensitive LDAP user logins
by Jason Discount 28 Aug '13

28 Aug '13

Hi All, I have a client running Dovecot-Postfix on Debian Squeeze. I'm using Dovecot from the Squeeze repository. # dovecot --version 1.2.15 I've implemented a central mail_location and am using one vmail user, as I thought this would be be the best approach for when it came time to implement Shared and Public Mailboxes. # dovecot -n # 1.2.15: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-xen-686 i686 Debian 6.0.7 ext3 log_timestamp: %Y-%m-%d %H:%M:%S protocols: imap imaps pop3s managesieve listen(default): 127.0.0.1:143 listen(imap): 127.0.0.1:143 listen(pop3): 127.0.0.1:110 listen(managesieve): * ssl_listen(default): *:993 ssl_listen(imap): *:993 ssl_listen(pop3): *:995 ssl_listen(managesieve): ssl_ca_file: /etc/ssl/certs/RapidSSL_CA_bundle.pem ssl_cert_file: /etc/ssl/certs/mail.example.com.2013.chain.pem ssl_key_file: /etc/ssl/private/example.2013.key login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(pop3): /usr/lib/dovecot/pop3-login login_executable(managesieve): /usr/lib/dovecot/managesieve-login mail_max_userip_connections(default): 40 mail_max_userip_connections(imap): 40 mail_max_userip_connections(pop3): 10 mail_max_userip_connections(managesieve): 10 mail_privileged_group: mail mail_uid: vmail mail_gid: vmail mail_location: maildir:/var/spool/dovecot/%d/%u mbox_write_locks: fcntl dotlock mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_executable(managesieve): /usr/lib/dovecot/managesieve mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): mail_plugins(managesieve): mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 mail_plugin_dir(managesieve): /usr/lib/dovecot/modules/managesieve namespace: type: private separator: / inbox: yes list: yes subscriptions: yes lda: postmaster_address: postmaster(a)example.com mail_plugins: sieve quota log_path: /var/log/dovecot-deliver.log info_log_path: /var/log/dovecot-deliver.log auth default: mechanisms: plain login passdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf userdb: driver: ldap args: /etc/dovecot/dovecot-ldap-userdb.conf socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master: path: /var/run/dovecot/auth-master mode: 384 user: vmail group: vmail plugin: quota: maildir:User quota_rule: *:storage=1200M quota_rule2: Deleted Messages:storage=10%% quota_rule3: Deleted Items:storage=10%% quota_rule4: Trash:storage=10%% sieve: /var/spool/sieve/%d/%u/.dovecot.sieve sieve_dir: /var/spool/sieve/%d/%u All of the mail users are LDAP users only (not local UNIX users - not using nsswitch). dovecot-ldap-userdb.conf is a symbolic link to dovecot-ldap.conf # grep -v '^ *$#.*$\?$' /etc/dovecot/dovecot-ldap.conf uris = ldaps://mail.example.com/ dn = uid=mail,ou=Services,dc=example,dc=com dnpass = ****************** tls_require_cert = hard auth_bind = yes base = ou=People,dc=example,dc=com user_attrs = quota=quota_rule=*:storage=%$M user_filter = (&(objectClass=posixAccount)(mail=%u)) pass_attrs = uid=mail,userPassword=password pass_filter = (&(objectClass=posixAccount)(mail=%u)) Now, mail addressed to user(a)example.com and user(a)EXAMPLE.com correctly gets delivered to the correct mail location of /var/spool/dovecot/example.com/user, but the problem occurs when the user creates their account with uppercase characters in their username, e.g. user(a)exaMPLE.com. This creates a new directory at /var/spool/dovecot/exaMPLE.com/user, which ever receives any mail. Is it possible to ignore the case the user enters in their mail client and always land them at the lowercase mail directory? Where would this be done? Thank you, Jay

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[Dovecot] How do I get CRAM-MD5 to work?
by LuKreme 28 Aug '13

28 Aug '13

I know how to ENABLE CRAM-MD5, but getting it to actually work? <http://wiki2.dovecot.org/HowTo/CRAM-MD5> It looks like I have to 1) manually create a CRAM-MD5 data file and, I suppose, 2) manually manage the file? Given I do not know user's passwords, this might be tricky. Currently I have users authenticate against MySQL (virtual users) or pam (local users). Or do i just ignore it all and stick with PLAIN since the connection is already encrypted? What is LOGIN? My MUA supports "Password" (which is PLAIN evidently), kerberos 5, MD5 Challenge-response (CRAM-MD5), and NTML (??) -- If you have any young friends who aspire to become writers, the second-greatest favor you can do them is to present them with copies of The Elements of Style. The first-greatest, of course, is to shoot them now, while they're happy. -Dorothy Parker

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[Dovecot] Migrating from Maildir to Maildir:LAYOUT=fs
by Rainer M Krug 27 Aug '13

27 Aug '13

Hi I have use dovecot together with offlineimap to download my gmail account on a single user computer and I have only one maildir (~/Maildir). As I switched to Mac, I would like to use spotlight to index my mails, which apparently does not work as they are in hidden directories (.directories). So I would like to change to LAYOUT=fs. Is there an easy way to migrate my email structure? I have several folders and subfolders, but a manual solution would be fine with me as well. My questions: 1) can I simply restructure the mailboxes and rename the folders / move them into the folders where I want them after changing the configuration of dovecot? 2) Is there an easy tool I can use for this for one mailbox which is doing it automatically? Thanks, Rainer -- Rainer M. Krug email: RMKrug<at>gmail<dot>com

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[Dovecot] Developer docs?
by C. Mills 27 Aug '13

27 Aug '13

Hi, I'm looking to modify Dovecot slightly to add support for a custom feature. I've spent some time reading the code, and I've been wondering if there are any contributor/developer documents I've missed that would make getting up to speed easier. I've read much of the code, and most of the wiki, including the Design/* and /*Process pages. They give a good summary of some of the design decisions, but I don't see much other than that. The docs included in the tarball are just dumps of the wiki pages. I've browsed some of the list archives as well, without finding much to help me. Are there other resources I've missed? What I'm trying to do requires passing some additional information/state from the imap-login process (presumably through the master) to the imap mail process. Any pointers much appreciated! Thanks, C. -- ----------------------------------------------------------------------- C. Mills -----------------------------------------------------------------------

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[Dovecot] Dovecot tuning for GFS2
by Andrea gabellini - SC 26 Aug '13

26 Aug '13

Hello, I'm deploing a new email cluster using Dovecot over GFS2. Actually I'm using courier over GFS. Actually I'm testing Dovecot with these parameters: mmap_disable = yes mail_fsync = always mail_nfs_storage = yes mail_nfs_index = yes lock_method = fcntl Are they correct? RedHat GFS support mmap, so is it better to enable it or leave it disabled? The documentation suggest the use of flock. What about it? Thanks, Andrea -- ---------------------------------------------------------------- Don't talk with a full mouth ... or with an empty head ---------------------------------------------------------------- Ing. *Andrea Gabellini* Email: andrea.gabellini(a)telecomitalia.sm <mailto:Andrea%20Gabellini%20%3Candrea.gabellini@telecomitalia.sm%3E> Skype: andreagabellini Tel: (+378) 0549 886111 Fax: (+378) 0549 886188 Telecom Italia San Marino S.p.A. Strada degli Angariari, 3 47891 Rovereta Republic of San Marino http://www.telecomitalia.sm

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[Dovecot] zlib plugin issues
by Vijay Rajah 26 Aug '13

26 Aug '13

Hello, I'm running dovecot 2.2.5 in Centos 6.4 on EXT4 fs. I have activated zlib plugin. The incoming mails is compressed. However, when i try to retrieve the mail using imap I'm getting this error Aug 25 22:17:31 vrajah-vps5 dovecot: imap(me@<mydomain.tld>): Error: Cached message size smaller than expected (1464 < 2452) Aug 25 22:17:31 vrajah-vps5 dovecot: imap(me@<mydomain.tld>): Error: Maildir filename has wrong S value, renamed the file from /mail/mailbox/ rvijay.me/me/Maildir/.vijay_gmail/cur/1377448276.M960004P32378.vrajah-vps5,S=1464:2, to /mail/mailbox/<mydomain.tld>/me/Maildir/.vijay_gmail/cur/1377448276.M960004P32378.vrajah-vps5,S=1464:2, Aug 25 22:17:31 vrajah-vps5 dovecot: imap(me@<mydomain.tld>): Error: Corrupted index cache file /mail/mailbox/<mydomain.tld>/me/Mai ldir/.vijay_gmail/dovecot.index.cache: Broken physical size for mail UID 12 $ file /mail/mailbox/<mydomain.tld>/me/Maildir/.vijay_gmail/cur/1377448276.M960004P32378.vrajah-vps5\,S\=1464\:2\,S /mail/mailbox/<mydomain.tld>/me/Maildir/.vijay_gmail/cur/1377448276.M960004P32378.vrajah-vps5,S=1464:2,S: bzip2 compressed data, block size = 900k Am I missing anything? any ideas is much appreciated. Thanks Vijay ###################doveconf -n ############################ Here is my doveconf -n # 2.2.5: /mail/dovecot/2.2.5/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-358.14.1.el6.x86_64 x86_64 CentOS release 6.4 (Final) ext4 auth_mechanisms = plain login digest-md5 cram-md5 auth_socket_path = /mail/var/dovecot/run/auth-userdb base_dir = /mail/var/dovecot/run/ debug_log_path = /var/log/dovecot-debug.log hostname = mail1(a)rvijay.me mail_location = maildir:/mail/mailbox/%d/%n/Maildir mail_plugin_dir = /mail/dovecot/2.2.5/lib/dovecot/ mail_plugins = " virtual quota zlib" 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 { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } passdb { args = /mail/dovecot/2.2.5/etc/dovecot/conf.d/dovecot-sql.conf.ext driver = sql } plugin { mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size quota = maildir:User quota quota_grace = 10%% quota_rule = *:storage=1GB quota_rule2 = Trash:storage=+10%% quota_rule3 = Spam:storage=+20%% quota_status_nouser = DUNNO quota_status_overquota = 450 4.2.2 Mailbox is full. Try again later quota_status_success = DUNNO quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u quota_warning3 = -storage=100%% quota-warning below %u sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_global_dir = /mail/var/dovecot/sieve zlib_save = bz2 zlib_save_level = 9 } protocols = imap lmtp sieve service auth { unix_listener /mail/var/postfix/dovecot-auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 143 } } service lmtp { unix_listener /mail/var/postfix/dovecot-lmtp { group = postfix mode = 0660 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } service_count = 10 vsz_limit = 64 M } service managesieve { process_limit = 1024 } service quota-status { client_limit = 1 executable = quota-status -p postfix inet_listener { port = 12340 } } service quota-warning { executable = script /mail/dovecot/2.2.5/etc/dovecot/conf.d/quota-warning.sh user = vmail } shutdown_clients = no ssl_ca = </mail/dovecot/2.2.5/etc/dovecot/ssl/mayca.crt.pem ssl_cert = </mail/dovecot/2.2.5/etc/dovecot/ssl/mail1.rvijay.me.pem ssl_key = </mail/dovecot/2.2.5/etc/dovecot/ssl/mail1.rvijay.me.key ssl_parameters_regenerate = 30 hours submission_host = 127.0.0.1:587 userdb { driver = prefetch } userdb { args = /mail/dovecot/2.2.5/etc/dovecot/conf.d/dovecot-sql.conf.ext driver = sql } protocol lda { mail_plugins = " virtual quota sieve zlib" } protocol imap { mail_plugins = " virtual quota imap_quota zlib" } protocol lmtp { mail_plugins = " virtual quota sieve zlib" }

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[Dovecot] SMTP Proxy
by Leonardo Rodrigues 26 Aug '13

26 Aug '13

Hi, I have found a message on this mailing list dated August/2012 in which is said that dovecot could not (at least at that time) do SMTP Authentication using Proxy Features. http://www.dovecot.org/list/dovecot/2012-August/067998.html is this still true, given i'm using latest stable dovecot, v2.2.5 ? extra informations ... smtp authentication is done by postfix using: dovecot: service auth { unix_listener /var/spool/postfix/private/auth { mode = 0660 user = postfix group = postfix } } postfix: smtpd_sasl_type = dovecot smtpd_sasl_path = /var/spool/postfix/private/auth Thanks ! -- Atenciosamente / Sincerily, Leonardo Rodrigues Solutti Tecnologia http://www.solutti.com.br Minha armadilha de SPAM, NÃO mandem email gertrudes(a)solutti.com.br My SPAMTRAP, do not email it

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[Dovecot] Nee assistance with migrating/copying a virtual user's maildir to another virtual user
by David Varela 26 Aug '13

26 Aug '13

Hello, I am trying to move/copy a virtual user's maildir to another virtual user but am running into problems with dsync and doveadm. I'm trying to move the maildir of a user who is no longer with the company to a manager's maildir. For doveadm I am using the command: doveadm move -u scavenaugh(a)lamontanita.coop jhenning(a)lamontanita.coop/INBOX/scavenaugh INBOX ALL The error is: doveadm(scavenaugh(a)lamontanita.coop): Error: user scavenaugh(a)lamontanita.coop: Auth USER lookup failed /var/log/dovecot.log shows: passdb doesn't support lookups, can't verify user's existence dovecot -n # 2.1.6: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 8.2-RELEASE i386 ufs auth_cache_ttl = 14 mins auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain gssapi login auth_use_winbind = yes auth_verbose = yes auth_winbind_helper_path = /usr/local/bin/ntlm_auth first_valid_gid = 1001 first_valid_uid = 1001 info_log_path = /var/log/dovecot_info.log last_valid_gid = 1001 last_valid_uid = 1001 log_path = /var/log/dovecot.log mail_debug = yes mail_location = maildir:/usr/data/vmail/%u mail_max_userip_connections = 30 mail_privileged_group = mail passdb { args = /usr/local/etc/dovecot-ldap.conf driver = ldap } plugin { sieve = /usr/data/sieve-scripts/%u.sieve } protocols = imap pop3 service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-master { mode = 0600 } user = root } ssl_cert = </etc/ssl/dovecot/04JAN12cert.pem ssl_key = </etc/ssl//dovecot/04JAN12key.pem userdb { args = uid=vmail gid=vmail home=/usr/data/vmail/%u driver = static } valid_chroot_dirs = /usr/data/vmail verbose_proctitle = yes protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep } protocol pop3 { pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } protocol lda { mail_plugins = sieve sendmail_path = /usr/sbin/sendmail } Your assistance is greatly appreciated. David Varela

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