- dovecot - dovecot.org

[Dovecot] Scheduled Outages
by Roger Weeks 12 Apr '06

12 Apr '06

What's "after hours" for an ISP with customers all over the world? That's why we have regular once-per-month scheduled outages. Same time, every month. Email reminders go out to customers and are announced on our web pages. People can't argue with a month's advance notice. -- Roger J. Weeks Systems & Network Administrator Mendocino Community Network On Apr 12, 2006, at 5:49 AM, dovecot-request(a)dovecot.org wrote: > Date: Wed, 12 Apr 2006 07:27:36 -0500 > From: Les Mikesell <lesmikesell(a)gmail.com> > Subject: Re: [Dovecot] 1.0.beta6 released > To: Reuben Farrelly <reuben-dovecot(a)reub.net> > Cc: Timo Sirainen <tss(a)iki.fi>, Chris Wakelin > <c.d.wakelin(a)reading.ac.uk>, Jens Laas <jens.laas(a)data.slu.se>, > dovecot(a)dovecot.org > Message-ID: <1144844856.24974.1.camel(a)les-home.futuresource.com> > Content-Type: text/plain > > On Wed, 2006-04-12 at 06:51, Reuben Farrelly wrote: > >> That's why there's "scheduled downtime" and "after hours" to do >> these things, in >> case stuff goes wrong, as some users of horde with dovecot have >> found out lately ;) > > What's 'after hours' for a company with users all around the world? > Interesting concept, though... > -- > Les Mikesell > lesmikesell(a)gmail.com

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[Dovecot] http://wiki.dovecot.org/ IS NOT RUNNING
by Alexandre Busquets 12 Apr '06

12 Apr '06

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[Dovecot] Full text search indexing
by Timo Sirainen 12 Apr '06

12 Apr '06

SEARCH is probably the slowest command that Dovecot has, especially when searching texts from message bodies. There exists a lot of text search engines, but unfortunately as far as I know there exists only one that can be used with IMAP. The reason why IMAP is special is because it requires that when searching eg. "ello", it must match also mails which contain eg. word "hello". Most search engines support only matching either complete words or matching from the beginning of the words. So, the one usable engine which I know of is Cyrus's squat indexing. It works basically by indexing the mails in 4 byte blocks and storing them in a trie. So if there exists a string "he llo", it indexes "he l", "e ll" and " llo" strings. When searching it then gets the first 4 bytes of the search keyword, looks them up from the squat index and then once it gets a list of matched mails, it reads the mails and does a proper search for only them. So the squat index doesn't give exact results, but only narrows down the number of mails which have to be searched. The biggest problem with those squat indexes is that it doesn't support incremental updates, so there has to be some nightly runs to rebuild the indexes from scratch. And with lots of users that's not practical, so I think that's the reason why the squat indexes aren't all that commonly used with Cyrus. I was thinking about taking the basic ideas from the Cyrus squat indexer but making it possible to update it incrementally so Dovecot could do it automatically. Also to reduce space I was thinking about sorting the 4 byte strings so instead of eg. "abcd", "dcba" and "abdc" all being indexed, they could all be stored as "abcd" (so the search key would also have to be sorted before use). But that might cause larger result sets making the search slower, so I'll have to test if it's worth it. Unicode characters might also be a problem. If the characters are stored in 16bit characters, it would waste space. If they're stored in UTF-8 the 4 bytes might not be enough to give a useful index (as a single character might take even 5 bytes). One thing I was thinking was to not index in 4 byte blocks, but 4 character blocks in UTF-8, so the trie could be 4..20 levels deep depending on what unicode characters are used (in finnish text it would probably be max. 7 levels deep). So, now would be a good time to tell if you can think of some better ideas how to do this, especially if you know about some new algorithms specifically designed for this kind of searching. :) Pretty much all the algorithms I've found about this were suffix trees/arrays and this basic trie thing.

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[Dovecot] beta7: TLS, Success!!
by Jeff A. Earickson 12 Apr '06

12 Apr '06

Timo, With my setup (Solaris 9, IMAP only, TLS, plain auth, mbox format), beta 7 is now working correctly. Thanks for your efforts! Jeff Earickson Colby College

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Re: [Dovecot] strip domains]
by Michael Baird 12 Apr '06

12 Apr '06

-------- Forwarded Message -------- From: Michael Baird <mike(a)tc3net.com> To: Timo Sirainen <tss(a)iki.fi> Subject: Re: [Dovecot] strip domains Date: Wed, 12 Apr 2006 10:42:43 -0400 On Wed, 2006-04-12 at 17:17 +0300, Timo Sirainen wrote: > On Wed, 2006-04-12 at 09:48 -0400, Michael Baird wrote: > > I don't > > know why there is so much resistance to supporting functionality that is > > mostly a standard feature with other pop3/imap servers, and which also > > makes it *much* easier to migrate to dovecot from other solutions which > > support the domain stripping. > > I don't remember having seen all that much requests for this feature. > Perhaps lately several people have asked for it, but for the last 3 > years there haven't been all that many people. > > If I added a new setting for every single feature people asked, > dovecot-example.conf would be much larger than it currently is. And it > already is too large I think. I'm not asking for every new feature, just one that I think fits in with the current design of dovecot already and is a standard feature provided by other servers. You already provide the ability built in to "strip domains" per say, with the %u and %d values built in. To accomplish what I would like to do, I only need to be able to pass whatever combination of these values I wish to my passdb and userdb functions of choice. Regards Michael Baird

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[Dovecot] [patch] MD5 variable modifier
by Ben Winslow 12 Apr '06

12 Apr '06

Hello, I've taken a different (better) approach to getting tpop3d-compatible UIDLs: the first attached patch (...md5_modifier.diff) adds a variable expansion modifier (%M) to return the md5sum of the expanded variable in hex. With the patch, you can get tpop3d-compatible UIDLs by setting pop3_uidl_format to %Mf. While testing interactions with other modifiers (e.g. %MUf to get the md5sum in uppercase), I noticed that %U is broken -- it lowercases the input just as %L does. The second patch (...ucase_modifier_fix.diff) is a one-liner to fix that. Finally, the third attached patch (...apop_aesthetics.diff) is another trivial patch to add a space between the server greeting and the APOP challenge. I think it looks better when telnetting to the server to diagnose something, and since spaces are stripped from the end of the login_greeting, editing the code is the only way to add the space. Cheers, -- Ben Winslow <rain(a)bluecherry.net>

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[Dovecot] Beta 7 fixes the Horde issue!
by interfaSys sàrl - Rich Internet Applications 12 Apr '06

12 Apr '06

Thank you for beta 7. Everything works well this time (for us at least). Best regards, Olivier Paroz interfaSys sàrl

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[Dovecot] Postfix dovecot SASL and LDAP not working...
by Brice Figureau 12 Apr '06

12 Apr '06

Hi, I'm trying to setup a new mail server where postfix 2.3-20060405 would use Dovecot's SASL and users located in LDAP. It's with dovecot-1.0-beta5. On the postfix side, I followed the SASL_README and have the following in main.cf: smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_sasl_auth_enable = yes On the dovecot side I have the following related to auth: auth_verbose = yes auth_debug = yes auth_debug_passwords = yes auth default { mechanisms = plain digest-md5 cram-md5 # LDAP database passdb ldap { # Path for LDAP configuration file, see /etc/dovecot/dovecot-ldap.conf for # example args = /etc/dovecot/dovecot-ldap.conf } # LDAP database userdb ldap { # Path for LDAP configuration file, see /etc/dovecot/dovecot-ldap.conf for # example args = /etc/dovecot/dovecot-ldap.conf } userdb prefetch { } user = root ## ## dovecot-lda & postfix SASL specific settings ## socket listen { master { path = /var/run/dovecot-auth-master mode = 0666 } client { path = /var/spool/postfix/private/auth mode = 0660 user = postfix group = postfix } } pop or imap authentification with LDAP works fine: Apr 11 17:43:08 localhost dovecot: auth(default): client in: AUTH^I1^IPLAIN^Iservice=IMAP^Isecured^Ilip=127.0.0.1^Irip=127.0.0.1^Iresp=AGJyaWNlAHRvdG8= Apr 11 17:43:08 localhost dovecot: auth(default): ldap(raymond,127.0.0.1): base=ou=people, dc=daysofwonder, dc=com scope=subtree filter=(&(objectClass=CourierMailAccount)(uid=raymond)) fields=uid,userPassword,homeDirectory,uidNumber,gidNumber,mailbox Apr 11 17:43:08 localhost dovecot: auth(default): ldap(raymond,127.0.0.1): uid(user)=raymond userPassword(password)={PLAIN}toto homeDirectory(userdb_home)=/home/raymond uidNumber(userdb_uid)=1000 gidNumber(userdb_gid)=1000 mailbox(userdb_mail)=/home/raymond/Maildir Apr 11 17:43:08 localhost dovecot: auth(default): client out: OK^I1^Iuser=raymond^I Apr 11 17:43:08 localhost dovecot: auth(default): master in: REQUEST^I1^I15439^I1 Apr 11 17:43:08 localhost dovecot: auth(default): ldap(raymond,127.0.0.1): base=ou=people, dc=daysofwonder, dc=com scope=subtree filter=(&(objectClass=CourierMailAccount)(uid=raymond)) fields=homeDirectory,uidNumber,gidNumber,uid,mailbox Apr 11 17:43:08 localhost dovecot: auth(default): master out: USER^I1^Iraymond^Isystem_user=raymond^Ihome=/home/raymond^Iuid=1000^Igid=1000^Imail=/home/raymond/Maildir Apr 11 17:43:08 localhost dovecot: imap-login: Login: user=<raymond>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured postfix SASL doesn't work, but more important don't print any debug messages, nor try to contact the LDAP server at all: Apr 11 18:00:59 localhost postfix/smtpd[15637]: connect from localhost.localdomain[127.0.0.1] Apr 11 18:01:13 localhost dovecot: auth(default): client in: AUTH^I3^Iplain^Iservice=smtp^Iresp=YnJpY2UAYnJpY2UAdG90bw== Apr 11 18:01:14 localhost dovecot: auth(default): client out: FAIL^I3^Iuser=raymond Apr 11 18:01:14 localhost postfix/smtpd[15637]: warning: localhost.localdomain[127.0.0.1]: SASL plain authentication failed: I tried several variations of the config, like without userdb prefetch, moving postfix socket config block in another auth block... Nothing worked. Since the samples are mentioning only pam as userdb and passdb source, maybe it can't work with LDAP ? Any idea on how to solve this issue ? Thanks, Regards, -- Brice Figureau

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[Dovecot] Horde problem not fixed in beta6
by interfaSys sàrl - Rich Internet Applications 12 Apr '06

12 Apr '06

We experience the same problem between Horde and Dovecot 1.0 beta 6. Beta 3 is still the only working solution right now. Best regards, Olivier Paroz interfaSys sàrl

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[Dovecot] DOVECOT+SQLITE
by Alexandre Busquets 12 Apr '06

12 Apr '06

Has somebody experience with DOVECOT+SQLITE? Which will be the config variables? auth_userdb = mysql /etc/dovecot/dovecot-mysql.conf ------------------------------------------------------ db_host = localhost db_port = 3306 db_unix_socket = /var/run/mysqld/mysqld.sock db = test db_user = test db_passwd = test db_client_flags = 0 default_pass_scheme = PLAIN password_query = SELECT clear FROM users WHERE username = '%u' user_query = SELECT pop as home, uid, gid FROM users WHERE username = '%u' ------------------------------------------------------ Is possible use sqlrelay

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[Dovecot] DON'T DELETE THIS MESSAGE?
by Knute Johnson 12 Apr '06

12 Apr '06

I have a new install of FC5 running dovecot 1.0.0 beta 2.7. I get my mail with POP3 but I have a user using IMAP. They both work great but I keep getting a message from dovecot in my mail saying DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA. I think it is there to help keep track of IMAP messages. Since I use POP3 is there any way not to have it show up all the time? I've deleted it, I've deleted my account and re-added it but it keeps coming back. Dovecot is also making a 'mail' directory in my ~ that I don't think I need. What can I do about this? Thanks, -- Knute Johnson Molon Labe...

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[Dovecot] IMAPS - timeout while moving mails
by Petar Bogdanovic 12 Apr '06

12 Apr '06

Hi, I'm using Dovecot v1.0.beta5 (NetBSD 3.0, i386) and Mozilla Thunderbird 1.5 (XP, i386). My dovecot.conf is pretty simple, because I just use dovecot for me as the only user. However, when I try to move a 'larger' amount of mails (>200) from my local TB-mbox to the remote IMAPS-storage, the process hangs after about 150 - 160 transferred mails (the 'blocking' mail is _never_ the same). I don't have the slightest clue why - there is nothing in the logs - even if I turn 'verbose_ssl' on. After a while, TB tells me, that the server timed out and dovecot says: "imap(petar): Disconnected" Usually - if I close my MUA correctly - dovecot says: "imap(petar): Disconnected: Logged out" Is somebody maybe experiencing something similar? Thank you very much & with kind regards, Petar Bogdanovic

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[Dovecot] 1.0beta5 released
by Cesar Mesias 12 Apr '06

12 Apr '06

Dear friends, I am trying to upgrade dovecot 1.0-alpha3 to dovecot 1.0-beta 5, but I have some problems to do that. When I install its rpm I get a message which indicates I have to install some dependences such as openssl-0.9.7f-7.i386, sqlite-3.2.8-1.9.el4 and libk5crypto.so.3. I haven't had any problems with openssl and sqlite but I always get a message that I need to have the libraries of libk5crypto. I realised that I have these libraries, but I get the same message, which is the following: [root@server]rpm -ivh openssl-0.9.7f-7.i386.rpm warning: openssl-0.9.7f-7.i386.rpm: V3 DSA signature: NOKEY, key ID 4f2a6fd2 error: Failed dependencies: libk5crypto.so.3(k5crypto_3_MIT) is needed by openssl-0.9.7f-7.i386 libkrb5.so.3(krb5_3_MIT) is needed by openssl-0.9.7f-7.i386 I appreciate so much if you could send me the steps that I have to do to make the upgrade without problems. I have Red Hat Enterprise Linux 4.0 I am looking forward from hearing you soon. Thanks for your time. Regards, Cesar

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[Dovecot] sqlrelay
by Alexandre Busquets 12 Apr '06

12 Apr '06

Is possible works with sqlrelay

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[Dovecot] beta5 no ssl (imaps) connection
by Elimar Riesebieter 11 Apr '06

11 Apr '06

Hi all, running beta 5 doesn't allow ssl connections: SASL authentication failed Same config runs well with beta3. I tried as well latest CVS, but this gives me the same error. Verbose debug output: dovecot: 2006-04-09 17:17:51 Info: auth(default): client in: AUTH 1 PLAIN service=IMAP secured lip=192.168.200.1 rip=192.168.200.202 dovecot: 2006-04-09 17:17:51 Info: auth(default): client out: CONT 1 dovecot: 2006-04-09 17:17:51 Info: auth(default): client in: CONT<hidden> dovecot: 2006-04-09 17:18:51 Info: imap-login: Disconnected: Inactivity: method=PLAIN, rip=192.168.200.202, lip=192.168.200.1, TLS If I logged in on the dovecot server itself, the connection is estabilished. I guess it's only a change in the config, but which? Elimar -- Do you smell something burning or ist it me?

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[Dovecot] phantom new mail (mailboxes keep on being reported as having new mail)
by Grobian 11 Apr '06

11 Apr '06

Hi, I'm using dovecot 1.0_beta3 on Gentoo Linux, and am experiencing a problem of what I call 'phantom mail'. This problem I have for a long time (pre 1.0), but at the moment I'm using 1.0_beta3 and the problem still is in there. My setup is as follows: - regular x86 box - running Exim and Dovecot - Exim saves new mail in maildir format in a local filesystem /mail/user/blabla - Dovecot reads and serves IMAP from local filesystem /mail/user/blabla - client is Mutt and/or Thunderbird from any OS (Mac, Linux, Windows) via IMAP Situation that happens: I get new mail in a folder, say =news (in Mutt style, it's .news dir in the maildir directory). I read the item, Mutt (or Thunderbird) marks the item as read (moving it over to cur aswell I think), save the folder, then move on to another folder. At this point dovecot IMAP server indicates to the client that there is new mail in the folder =news. If I visit the folder with the client, I see no new mail, and sometimes I have two or three of those folders, and I can keep on cycling with Mutt till I get bored :). Before upgrading Dovecot, I knew of no way to resolve this problem; eventually, it seemed that at some point the folder seemed to figure out itself that there was indeed no new mail. Sometimes I could trick it by letting Mutt mark the mail as new again, and then save the folder. Didn't always work. Now, I think a week or two ago I upgraded Dovecot and had to manually move all the .subscription files, and I also in one go decided to remove the dovecot* and .imap* files. That cleaned up, and at first that looked like it solved my problem. Not. So I figured out throwing away dovecot's index stuff (rm dovecot* in the directory that shows phantom mail) resolves the problem. However, this method starts to get annoying so to say. So, I did some investigation and found out that the dovecot-uidlist file seems to be not up-to-date on a folder that shows phantom mails: # awk '{ print $2 }' dovecot-uidlist | sort > tmp.uids # ls cur | sort | diff -u - tmp.uids --- - 2006-03-08 17:45:26.428168000 +0100 +++ tmp.uids 2006-03-08 17:45:19.000000000 +0100 @@ -47,4 +47,5 @@ 1141340181.H111425P8973.hermes.orakel.ods.org:2,S 1141387968.P13010Q0M35974.hermes:2,S 1141528391.H769531P12886.hermes.orakel.ods.org:2,S -1141830301.H349821P23427.hermes.orakel.ods.org:2,S +1141544380 +1141830301.H349821P23427.hermes.orakel.ods.org It seems the dovecot uidlist doesn't have the right name for the file on disk, probably therefore "seeing" a new file all the time and reporting the folder as having new mail. The 1141544380 entry comes from the first row of the dovecot-uidlist file: 1 1141544380 51 I guess it's just some sort of line to keep track of the last timestamp and the number of messages or something. If my theory is right here then it looks as if the 'bad entry' is actually more recent than this most recent timestamp reports. But this is only speculation of course. Enough for this lenghty mail I guess. Is this a known issue, or can it be caused by the way I set up my system? I must note that this only happens for some folders, not all of them. I have folders which get a lot of mail, but don't have this happening on. Any clues go resolve this are welcome. Regards, -- Fabian Groffen

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Re: [Dovecot] Dovecot's as ip/user based login filter?
by Sysadmin 11 Apr '06

11 Apr '06

Tere. > Actually I do not know wheter Dovecot can do it by itself. > On my server I use a customized PAM-Module to authenticate and authorize > my users. The module also performs a check on the host where the users > comes from and checks wheter there is a rule to allow/deny access from > this host. > > I know this setup sounds an bit exotic, but it works quite nice for me > with the advantage to use this feature within other services than dovecot. > > It's sounds wonderful. Can You kindly share this customized pam module for me? -- Sysadmin

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[Dovecot] SSHA Password Hashing
by Gavin Young 11 Apr '06

11 Apr '06

We are currently running a production mail server using version 0.990.99.11-2 (latest RPM from RHEL/CentOS). We would like to migrate more virtual domains off our courier imap server to dovecot but the courier imap user passswords are stored in LDAP and are SSHA hashed which is not supported by our current version of dovecot (CRYPT only). >From reading the mailing lists this feature is now available but I am hesitant to move a production server to a beta software release. Apart from waiting for a 1.0-final RPM, what is the simplest/best way for us to allow dovecot to read existing SSHA hashed passwords within LDAP? Any help would be much appreciated. Gavin

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[Dovecot] anyone running with Horde mail?
by interfaSys sàrl - Rich Internet Applications 10 Apr '06

10 Apr '06

We have the exact same problem. Everything is fine with beta3, but the latest betas have problems with Horde. We are using FreeBSD and Horde 3.1. The logs show connections from 127.0.0.1. Login is successful, but the user is immediately disconnected. Best regards, Olivier Paroz interfaSys sàrl > Yes, our horde/imp webmail servers use dovecot beta3 with no > problems. > > We are running horde 2.2.5 on on Solaris 10 boxes. Dovecot uses pam > on the imap server (a Solaris 9 box). I've had no luck with beta4 > or beta5 so far. > > Jeff Earickson > Colby College

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[Dovecot] Re: LDAP authentication via PAM
by Oscar A. Valdez 10 Apr '06

10 Apr '06

Luis Meléndez escribió: > Oscar A. Valdez wrote: > > I've configured dovecot to authenticate against a Fedora Directory > > Server. The mail server on which dovecot is installed has the > > nss_ldap and pam_ldap packages installed, and /etc/dovecot.conf has the > > following two lines: > > > > auth_userdb = ldap /etc/dovecot-ldap.conf > > auth_passdb = pam > > ... > > Is it possible to access the user database through PAM (auth_userdb = > > pam)? Since I'm running the nss_ldap and pam_ldap modules, it'd really > > be an LDAP query for users, and a query in /etc/passwd and /etc/group > > for dovecot (since it's a local user and group on the mail server). > > If you are using nss_ldap and have edited /etc/nsswitch.conf > accordingly, you should get it done with: > > auth_userdb = passwd > > It doesn't mean to use /etc/passwd, but the O.S. nss mechanism. Before trying to Luis' suggestion, I had the following in /var/log/messages: dovecot(pam_unix)[4691]: check pass; user unknown dovecot(pam_unix)[4691]: authentication failure; logname= uid=0 euid=0 tty= ruser= rhost= dovecot-auth[4691]: pam_ldap: could not open secret file /etc/ldap.secret (No such file or directory) I suppose the first two entries are the lookup for the dovecot user in the DS, where it doesn't exist. And since I want anonymous binds to the DS, I haven't created file /etc/ldap.secret. Users were able to authenticate and get their mail. After changing to auth_userdb = passwd, all the messages went away, but the users weren't able to get their mail: Evolution gave me the following error: "Unable to get a valid greeting" from the mailserver. I went back to auth_userdb = ldap /etc/dovecot-ldap.conf, and then back to auth_userdb = passwd. Users can get their mail, but the messages are back in the log file. I'd appreciate help in understanding this behavior. -- Oscar A. Valdez

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Re: [Dovecot] anyone running with Horde mail?
by interfaSys sàrl - Rich Internet Applications 10 Apr '06

10 Apr '06

I have: Imp, turba, ingo, kronolith, nag and mnemo. Auth is done through IMP. servers.php contains this: $servers['dovecot'] = array( 'name' => 'IMAP Server', 'server' => 'localhost', 'hordeauth' => 'full', 'protocol' => 'imap/notls', 'port' => 143, 'folders' => '', 'namespace' => '', 'maildomain' => '', 'smtphost' => '', 'smtpport' => 25, 'realm' => '', 'preferred' => '', 'acl' => array( 'driver' => 'rfc2086', ), 'dotfiles' => true, 'hierarchies' => array() ); PEAR Auth_SASL is installed Best regards, Olivier Paroz interfaSys sàrl > I have it working now with FreeBSD, the latest HOrde, and the > latest dovecot. > > What other Horde components do you have installed, and how do you > have > the authentication set up.

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[Dovecot] Test version for production servers for shared folders
by Gavin Henry 10 Apr '06

10 Apr '06

Dear List, Is the latest test version suitable for production systems? Our current servers use 0.99 on FC4 and we would like to add shared folders via the test version. Has anyone migrated this way before? Thanks, Gavin. -- Kind Regards, Gavin Henry. Managing Director. T +44 (0) 1224 279484 M +44 (0) 7930 323266 F +44 (0) 1224 742001 E ghenry(a)suretecsystems.com Open Source. Open Solutions(tm). http://www.suretecsystems.com/

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[Dovecot] Log format top=0/0 elements meaning?
by Sysadmin 10 Apr '06

10 Apr '06

Hello. Typical log text - top=0/0, retr=0/ del=0/0, size=0 I can figure out what means retr=0/ del=0/0, size=0, but what about top=0/0? It's static data, haven't seen any others numbers, than zeros there? -- Sysadmin

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[Dovecot] Added Howto for installing RPMs of beta versions for Fedora Core
by Gavin Henry 10 Apr '06

10 Apr '06

Might as well update the wiki ;-) http://wiki.dovecot.org/PrebuiltBinaries -- Kind Regards, Gavin Henry. Managing Director. T +44 (0) 1224 279484 M +44 (0) 7930 323266 F +44 (0) 1224 742001 E ghenry(a)suretecsystems.com Open Source. Open Solutions(tm). http://www.suretecsystems.com/

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Re: [Dovecot] Dovecot's as ip/user based login filter?
by Sysadmin 10 Apr '06

10 Apr '06

Tere. > > If you're using PAM authentication then just use pam_group to restrict > it to a specific group. > > I'm using pam, but how to use this pam_group to allow connect all users from my networks a'la 192.168.0.0/24 and only some users from other network a'la 0.0.0.0 to connect to the port 993? -- Sysadmin

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