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[Dovecot] Postfix/mysql/dovecot - Understanding password encryption
by Robert Moskowitz 25 Dec '12

25 Dec '12

I am switching from a fedora/postfix/mysql/couriermail/squirrelmail to Centos/.../dovecot/roundcubemail and adding postfixadmin to the mix. My tutorial before was an earlier version (on F14) of: http://www.howtoforge.com/virtual-users-and-domains-with-postfix-courier-my… Now I am using http://www.campworld.net/thewiki/pmwiki.php/LinuxServersCentOS/Cent6VirtMai… to get me started. I am up to roundcubemail setup and am stumbling to understand what the author here is doing with encrypted passwords, so felt it was time to delve deeper into this. My old setup uses mysql-crypt for the password. MYSQL_CRYPT_PWFIELD password and users could be added to the table with: INSERT INTO `users` (`email`, `password`, `quota`) VALUES ('sales(a)example.com', ENCRYPT('secret'), 10485760); But where this was all simple and no choices, I get to figure out what to do with my dovecot setup. Some of the 'secret' is hinted at in postfixadmin's config.inc.php: // Encrypt // In what way do you want the passwords to be crypted? // md5crypt = internal postfix admin md5 // md5 = md5 sum of the password // system = whatever you have set as your PHP system default // cleartext = clear text passwords (ouch!) // mysql_encrypt = useful for PAM integration // authlib = support for courier-authlib style passwords // dovecot:CRYPT-METHOD = use dovecotpw -s 'CRYPT-METHOD'. Example: dovecot:CRAM-MD5 $CONF['encrypt'] = 'md5crypt'; Where is there information on the different choices and how to choose. Is it as 'simple' as setting up postfixadmin to control the password encryption format then 'inform' dovecot in the dovecot-mysql.conf with default_pass_scheme = MD5-CRYPT Thank you for any pointers.

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[Dovecot] Undeserved permissions error with g+s folder permissions
by tlhackque 24 Dec '12

24 Dec '12

I have a (mbox/IMAP) directory under my mail directory with these permissions: drwxrws--- 4 tlhackque mail 4096 Dec 1 10:34 Vendors/ It contains a subdirectory: -rw-rw---- 1 thlackque mail 84805345 Dec 1 10:34 Vendors/AVendor If I try to rename the AVendor folder (client is Thunderbird 17.0), I get this error: Unable to rename across conflicting directory permisssions If I chmod g-s Vendors, the RENAME command succeeds. I shouldn't have to do this... Version and configuration information: dovecot --version 2.1.10 # OS: Linux 2.6.22.14-72.fc6 i686 Fedora Core release 6 (Zod) first_valid_gid = 4000 first_valid_uid = 4000 hostname = example.net login_greeting = Dovecot ready. Unauthorized access is prohibited. mail_access_groups = mail mail_location = mbox:~/mail:INBOX=/var/mail/%n mail_privileged_group = mail 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 = / } passdb { driver = pam } plugin { autocreate = Trash autocreate2 = Train As Spam autocreate3 = Train As Ham autocreate4 = Train As Forgotten autosubscribe = Trash autosubscribe2 = Train As Spam autosubscribe3 = Train As Ham autosubscribe4 = Train As Forgotten } service imap-login { inet_listener imap { address = imap.v4.example.net imap.v6.example.net port = 143 } inet_listener imaps { address = imap.v4.example.net imap.v6.example.net port = 993 ssl = yes } } service pop3-login { inet_listener pop3 { address = pop.v4.example.net pop.v6.example.net port = 110 } inet_listener pop3s { address = pop.v4.example.net pop.v6.example.net port = 995 ssl = yes } } ssl_ca = </etc/pki/tls/certs/example_net_ca-cert-crl.pem ssl_cert = </etc/pki/tls/certs/servers-example-net.pem ssl_key = </etc/pki/tls/private/servers-example-net.pmk userdb { driver = passwd } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep tb-lsub-flags mail_plugins = " autocreate" } protocol pop3 { mail_plugins = " autocreate" pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } -- This communication may not represent my employer's views, if any, on the matters discussed.

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[Dovecot] Understanding Sockets
by Tim Smith 22 Dec '12

22 Dec '12

Hi, Just trying to consolidate my knowledge of Dovecot and I want to understand various things rather than just key out lines of config in dovecot.conf with the hope of it working. What I wanted to clarify is my understanding the "socket listen" section of the config file. From my limited understanding, this section details how other processes can access the userdb defined in Dovecot. The master socket is used for "internal" processes which is mainly dovecot-lda so that when Dovecot receives mail it knows where to deliver it and client is defined for "external" processes, for example Postfix who would use the info to determine if a user existed. Would you say this is a fair (albeit) dumbed down!!) synopsis of sockets and their purpose? Thanks in advance! Tim

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[Dovecot] [Antispam]rev 990a43d44c73 breaks compilation for dovecot 2.1
by Simone Caruso 22 Dec '12

22 Dec '12

Dovecot 2.1.12 and antispam-plugin 0319240072d8 bash-# make Entering directory src. signature-log.c: In function 'signature_log_transaction_begin': signature-log.c:122: error: too many arguments to function 'dict_init' Failed to compile signature-log.c (plugin)! make[3]: *** [signature-log.plugin.o] Error 1 make[2]: *** [all] Error 2 make[1]: *** [src] Error 2 make: *** [all] Error 2 Reversing the deff the builing process ends with no error. -- Simone Caruso IT Consultant +39 349 65 90 805

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Re: [Dovecot] migration to dovecot pop3
by Joseph Tam 21 Dec '12

21 Dec '12

Rajesh M writes: > i am planning to migrate from qmail pop3 to dovecot pop3 > > the number of users on the server is large over 5000 > ... > also data volume is large - over 3.5 tb -- ie many users several 1000s of > emails in their inbox If you stay on the list, you might find some people here whose mail metrics are several orders of magnitude larger than this. > 1) will the migration cause all the emails on the server to re-download > ... > 4) has anybody migrated from qmail pop3 to dovecot pop3 successfully > without emails being downloaded again A proper migration will avoid this. Google is your friend http://lmgtfy.com/q=POP+qmail+to+dovecot+migration The top hits provide exactly what you're looking for. > 2) can dovecot be configured to allow only one download at a time - pop3 > locking with time out setting that can be customized > > 3) can dovecot pop3 be configured so that it will allow download of emails > only of the last say 15 days ie even if the same pop3 user is configure on > another machine it will download only messages of the last 15 days I can't answer this, but if this is an attempt to prevent mass download, the answer to 1+4 makes these questions irrelevant. Joseph Tam <jtam.home(a)gmail.com>

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Re: [Dovecot] dovecot Digest, Vol 116, Issue 38
by Douglas Mortensen 21 Dec '12

21 Dec '12

Austinator, What's the JLG maintenance schedule? I should show you how to setup a CW Service Template & then you can have it as a weekly ticket. :-) - Doug Mortensen Impala Networks Sent from my Windows Phone ________________________________ From: dovecot-request(a)dovecot.org<mailto:dovecot-request@dovecot.org> Sent: ‎12/‎21/‎2012 1:44 AM To: dovecot(a)dovecot.org<mailto:dovecot@dovecot.org> Subject: dovecot Digest, Vol 116, Issue 38 Send dovecot mailing list submissions to dovecot(a)dovecot.org To subscribe or unsubscribe via the World Wide Web, visit http://dovecot.org/cgi-bin/mailman/listinfo/dovecot or, via email, send a message with subject or body 'help' to dovecot-request(a)dovecot.org You can reach the person managing the list at dovecot-owner(a)dovecot.org When replying, please edit your Subject line so it is more specific than "Re: Contents of dovecot digest..."

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[Dovecot] Non-dovecot user looking for feedback
by Chris Ross 21 Dec '12

21 Dec '12

I've been using UW-IMAPd for neigh on forever (at least since 2001). But, as it's basically stalled, and I'm about to update the hardware that is my mail server, I thought it was time to review existing open-source IMAP servers. Dovecot is the top three in my looking. The other of the top three candidates, because I know of people who've used it, is Cyrus IMAP. So, I should note that my thoughts are "uw-imapd, because I already know how to use it", "Cyrus, because someone I know/trust liked it years ago", and dovecot, because "it seems stable, professional, and to meet all of my needs". I guess the biggest question I have is how files/folders are stored in the filesystem. uw-imapd has a "mbx" format that all of my folders are in, and also has support for mbox and maildir (i think). mbx had some advantages for speed access, which would be unimportant I assume with dovecot's indexes, but IIRC there was also some reason the mbox format coped poorly with multiple clients accessing the same folder at the same time. So, am I right that dovecot supports only the "one big full file" mbox format, and the maildir format? And if so, is it known to allow multiple simultaneous IMAP clients to access and monitor and/or modify the same folder simultaneously? After those questions, it's just a "what do you think the pros and cons of each are?" I know asking in this forum, that I will get most if not all votes for Dovecot. And that's fine, as long as you have specific reasons why it would be better for someone with only a handful of users and minimal time available to administer the systems in question. Thanks! I appreciate any and all feedback. - Chris

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[Dovecot] doveadm-lda - segfault
by kjonca＠o2.pl 20 Dec '12

20 Dec '12

I have simple old message: --8<---------------cut here---------------start------------->8--- X-Mozilla-Status: 0011 X-Mozilla-Status2: 00000000 Date: Wed, 26 Jan 2000 13:38:41 +0100 From: Kamil Jonca <kjonca(a)localhost.localdomain> To: Somebody X <xx(a)tiger.com.pl> Subject: Re: Opisy Message-ID: <20000126133839.B2888(a)localhost.localdomain> References: <Pine.LNX.4.05.10001261335010.19250-100000(a)aa.bbb.ccc> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2 Content-Transfer-Encoding: 8bit X-Mailer: Mutt 0.95.5us In-Reply-To: <Pine.LNX.4.05.10001261335010.19250-100000(a)xxx.yyy.cc>; from Somebody X on Wed, Jan 26, 2000 at 01:37:52PM +0000 X-Operating-System: 'Linux localhost.localdomain 2.2.9-27mdk #1 Mon Jan 24 15:49:34 CET 2000 i686 unknown' X-Geek: GIT d s+:- a-- C++ UL P+ L++ E W N+ w- PS+ PE++ PGP t-- X-- R- tv- b+ D+ G e h-- r- z? Lines: 30 X-KJONCA-Clamav-Status: No jd;fladflsd;lc dfgn;sdhgfad abffhahgl fadn;al sdfnad;hfa fna;lhfla -- shfkah --8<---------------cut here---------------end--------------->8--- When I try to dovecot-lda < message.txt (for sieve refiltering) I got segmentation fault. Does it is bug in lda, or message does not keep standards? KJ -- http://modnebzdury.wordpress.com/2009/10/01/niewiarygodny-list-prof-majewsk… Sanity and insanity overlap a fine grey line.

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[Dovecot] backtrace from postgres dict
by Steffen Kaiser 20 Dec '12

20 Dec '12

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, since I enabled ACLs I get following backtrace. It looks like that it happens if the ACLs had been changed only. Also, it looks like that it always happens 1 minute after last "dict: Info: pgsql(localhost): Connected to database dovecot", no matter if the user is logged in (and idle) or logged off. Postgres logs: "could not receive data from client: Connection reset by peer" and "unexpected EOF on client connection". Is there some TCP keep alive issue? Postgres is using the "system default" for TCP keep alive. I'm currently testing ACLs via telnet, so the activity with the ACL dict is pretty low, hence, an idle timeout would make much sense. # ../../sbin/dovecot --version 2.1.10 (a4f02f6c0d32) dict connect string: connect = host=localhost dbname=db user=user 2012-11-28 10:03:39 dict: Info: pgsql(localhost): Connected to database dovecot 2012-11-28 10:03:39 dict: Info: pgsql(localhost): Connected to database dovecot 2012-11-28 10:03:39 dict: Info: pgsql(localhost): Connected to database dovecot 2012-11-28 10:03:58 IMAP(user) [22922]: Info: Disconnected: Logged out in=23 out=763 2012-11-28 10:04:41 dict: Panic: file driver-pgsql.c: line 84 (driver_pgsql_set_state): assertion failed: (state == SQL_DB_STATE_BUSY || db->cur_result == NULL) 2012-11-28 10:04:41 dict: Error: Raw backtrace: /usr/local/dovecot-2.1.10/lib/dovecot/libdovecot.so.0(+0x4857a) [0x7f91f511157a] -> /usr/local/dovecot-2.1.10/lib/dovecot/libdovecot.so.0(+0x485c6) [0x7f91f51115c6] -> /usr/local/dovecot-2.1.10/lib/dovecot/libdovecot.so.0(i_error+0) [0x7f91f50e4eaf] -> dovecot2.1/dict() [0x40aa36] -> dovecot2.1/dict() [0x40aa91] -> dovecot2.1/dict() [0x40bed3] -> dovecot2.1/dict() [0x409504] - -> dovecot2.1/dict(sql_db_cache_deinit+0x20) [0x408a60] -> dovecot2.1/dict(main+0x169) [0x405a59] -> /lib/libc.so.6(__libc_start_main+0xfd) [0x7f91f4b5cc8d] -> dovecot2.1/dict() [0x404bb9] 2012-11-28 10:04:41 dict: Fatal: master: service(dict): child 22923 killed with signal 6 (core not dumped) - -- Steffen Kaiser -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEVAwUBULXbiGoxLS8a3A9mAQI9Ywf/YItPO4fFT70HcuwCkDXgx0Sn7CEyXu2j +1VzOu3R/TMs1rcxYJIvWiei6Nk3wXywzQl84POadJn61Yf2NuT80nMxwBsBbgio e+0oRE9JNVSjtvX5l7kehEdUDQjqRRKyrhWG9KDlpjWidGsYh7pQg0rDtp3UwG57 HuSBMiBAZ9t9sC2DXjn9wT9vweH3gMIhc/K5U0BLF5JG/K8UAKc5QBUgezjIYzvn KP90TJ4RoZ2vnPzmWfeIsjffRBvvC6UUgWmU02e2H9xJxzF32Nix0s8YWi7G91sH Ei057HW5NsKNDtp6B5fYk+xCpC6ucQiwFSr/ZG+uZCAdtTd2qmf60g== =tQYK -----END PGP SIGNATURE-----

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[Dovecot] setting mail_home and vacation
by Andreas Meyer 20 Dec '12

20 Dec '12

Hello! dovecot version 2.1.7 I set up vacation with sieve. We have mboxes and maildirs and in dovecot.conf mail_location = mbox:/var/spool/vhosts/%d/dovecotprivate/%n:INBOX=/var/spool/vhosts/%d/%n Error: User archiv(a)xyz.de doesn't have home dir set, disabling duplicate database Dec 19 20:37:03 lda(archiv(a)xyz.de): Error: sieve: sieve script file path ~/.dovecot.sieve is relative to home directory, but home directory is not available. Dec 19 20:37:03 lda(archiv(a)xyz.de): Error: sieve: failed to access user's sieve script ~/.dovecot.sieve (using default script location instead) When I set mail_home = mbox:/var/spool/vhosts/%d/%n:INBOX=/var/spool/vhosts/%d/%n I get this for mboxes in the log: Error: user archiv(a)xyz.de: Relative home directory paths not supported: mbox:/var/spool/vhosts/xyz.de/archiv:INBOX=/var/spool/vhosts/xyz.de/archiv The .dovecot.sieve script of the user seems to be found, a vacation response is sent and the email is stored mail into mailbox 'INBOX' What is wrong? Andreas

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