- dovecot - dovecot.org

Re: [Dovecot] v1.1.beta9 released
by lenny＠edpausa.com 26 Nov '07

26 Nov '07

> http://dovecot.org/releases/1.1/beta/dovecot-1.1.beta9.tar.gz > http://dovecot.org/releases/1.1/beta/dovecot-1.1.beta9.tar.gz.sig > > Some changes since beta8: > > - This release should work perfectly with NFS attribute cache enabled. > - Fixes to handling what should be written to cache file and when > - Some index handling optimizations > - IMAP LIST: dbox and cydir can now return children state > > Beta9 will most likely have a rewritten Squat indexer. More about that > the next mail. > > build errors. solaris 9, sparc, sun studio 9 and 12. source='base64.c' object='base64.o' libtool=no \ DEPDIR=.deps depmode=none /bin/bash ../../depcomp \ cc -DHAVE_CONFIG_H -I. -I. -I../.. -I/opt/SUNWconn/crypto/include -xjobs=4 -c base64.c "base64.c", line 96: syntax error before or at: ) "base64.c", line 105: syntax error before or at: ) "base64.c", line 107: "break" outside loop or switch "base64.c", line 108: cannot recover from previous errors cc: acomp failed for base64.c *** Error code 2 make: Fatal error: Command failed for target `base64.o'

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[Dovecot] File locking problems and duplicate emails with the snarf plugin
by Adrian Barker 26 Nov '07

26 Nov '07

Two weeks ago we switched all our IMAP users (around 25,000) from the Washington IMAP server to Dovecot, and since then there have been several occasions when reading new email just hangs, and duplicate emails appear. We are using the 'snarf' plugin to copy new email to the inbox, and it looks as though the problems are caused by file locking. We have been using the Washington IMAP server for a number of years without any file locking problems, so the underlying file locking mechanism is robust. Has anyone else seen this problem ? Our IMAP servers (5 of them) are a mixture of Sparc Solaris 8 and Solaris 10 machines, and they use NFS to a central mailspool running on AIX. We are using a mixture of Dovecot 1.0.3 and 1.0.5. Any help would be appreciated, as the problem has caused a lot of disruption, but we are reluctant to revert to the Washington IMAP server because of the performance improvements with Dovecot - there has been a reduction of over 60% in NFS accesses to the filestore. dovecot -n gives: # 1.0.3: /usr/local/etc/dovecot.conf base_dir: /var/run/dovecot/ listen: *:143 ssl_listen: *:993 ssl_ca_file: /usr/local/ssl/certs/sureserveredu.pem ssl_cert_file: /usr/local/ssl/certs/imap-server_ucl_ac_uk.crt ssl_key_file: /usr/local/ssl/certs/imap.key ssl_cipher_list: MEDIUM:!LOW disable_plaintext_auth: no login_dir: /var/run/dovecot//login login_executable: /usr/local/libexec/dovecot/imap-login login_user: pp login_process_per_connection: no login_processes_count: 30 max_mail_processes: 1500 first_valid_uid: 200 mail_location: mbox:%h/imap-mail:INBOX=/nfs/rcs/mail-spool/mail/%u mmap_disable: yes mbox_lock_timeout: 55 mbox_dotlock_change_timeout: 50 mail_drop_priv_before_exec: yes mail_executable: /usr/local/sbin/dovecot-login.csh mail_plugins: mbox_snarf mail_plugin_dir: /usr/local/lib/dovecot namespace: type: private separator: / inbox: yes auth default: passdb: driver: pam passdb: driver: passwd userdb: driver: passwd plugin: mbox_snarf: ~/imap-mail/mbox -- Adrian Barker, Internet Technology Section Information Systems University College London, Gower Street, London WC1E 6BT External phone: +44 20 7679 5140, Fax (+44) 20 7388 5406 Internal phone: x 25140 Email: A.Barker(a)ucl.ac.uk

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[Dovecot] Some dovecot conf parameters
by Proskurin Kirill 26 Nov '07

26 Nov '07

Hello all! First of all - sorry for my english. :-) Im working now on migration from cyrus to dovecot(v1.07). Everything work`s fine for now, but some parameters at dovecot conf a mystical for me. :-) dovecot-ldap.conf: user_attrs = mail #,homeDirectory,,,, user_filter = (&(objectClass=qmailUser)(mail=%u)) pass_attrs = mail,userPassword=password pass_filter = (&(objectClass=qmailUser)(mail=%u)) What does this parameters mean? Im understand what mean a *_filter, but im do not understand a *_attrs. Yes, im read a http://wiki.dovecot.org/AuthDatabase/LDAP and http://wiki.dovecot.org/PasswordDatabase/ExtraFields But don`t understand it. :-( Ask you for help, or just say what im read this wiki again and again. --- Best regards, Proskurin Kirill

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[Dovecot] Ldap Proxy
by Harrison Metzger 26 Nov '07

26 Nov '07

Hello I'm trying to do an ldap proxy but it is not working, it just continues to access the user's mailbox. I was able to do a proxy with a user in a "passwd-file", but not ldap directory. Here is part my "args" file on the passdb ldap stanza: base = dc=example,dc=com auth_bind = yes pass_filter = (&(objectClass=BCMailAccount)(BCMailEnable=true)(BCMailDovecotEnable=true)(uid=%u)(BCMailDovecotProxyHost=*)) pass_attrs = uid=user,proxy,BCMailDovecotProxyHost=host I've turned on auth_verbose, debug, etc and still can't figure out why it wont proxy. Ive tried adding user_attrs (the same as the pass attrs). I've even just put nologin in the pass_attrs but the user is still able to login, its like that field is not being processed. Harrison Metzger

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[Dovecot] upgrade from version 1.0.3 to version 1.0.7
by dhottinger＠harrisonburg.k12.va.us 26 Nov '07

26 Nov '07

Im working on upgrading to dovecot-1.0.7 from version 1.0.3 which I installed using yum. I backed up my init.d stuff so everything still works. However, when I shutdown my old dovecot version and start the new, I get an empty mailbox when logging into mail. My current config for dovecot.conf on version 1.0.3 has this for my mailbox location:mail_location = mbox:~/:INBOX=/var/mail/%u I went from uw-imap to dovecot some months ago and necessary changes to the .mailboxlist to .subscriptions. Is there a different format for version 1.0.7? -- Dwayne Hottinger Network Administrator Harrisonburg City Public Schools "rarely do people communicate, they just take turns talking"

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[Dovecot] v1.1.beta9 released
by Timo Sirainen 26 Nov '07

26 Nov '07

http://dovecot.org/releases/1.1/beta/dovecot-1.1.beta9.tar.gz http://dovecot.org/releases/1.1/beta/dovecot-1.1.beta9.tar.gz.sig Some changes since beta8: - This release should work perfectly with NFS attribute cache enabled. - Fixes to handling what should be written to cache file and when - Some index handling optimizations - IMAP LIST: dbox and cydir can now return children state Beta9 will most likely have a rewritten Squat indexer. More about that the next mail.

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[Dovecot] NFS lock tester
by Timo Sirainen 26 Nov '07

26 Nov '07

Anyone who has NFS, could you test: http://dovecot.org/tmp/locktest.c 1. Compile: gcc locktest.c -o locktest -Wall -g 2. Start in server 1: ./locktest temp1 3. Start in server 2: ./locktest temp2 4. Server 1 might log "unlink() failed" error after starting the second locktest, ignore that. It starts writing something like: 1 successes 12 successes link() succeeded, but link count=1 12 successes What I'd like to know is what OS you use on your NFS clients, what NFS server you use and what errors does it give (errors being those "link() succeeded/failed, but .." messages). I'm getting that "link() succeeded, but link count=1" error with FreeBSD 6.2. So I'd like to know if this is a FreeBSD bug, NFS server bug or a more common NFS problem that I should work around..

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[Dovecot] Small typo
by Abhijit Hoskeri 26 Nov '07

26 Nov '07

Hi, There is a small typo in src/lib/network.c line 624 return "A non-recovable name server error occurred"; should be return "A non-recoverable name server error occurred"; Sorry about the pedantry. BTW, I am getting this error whenever I am trying to resolve a name from inside dovecot, but I can using the system tools. I am trying to get the proxying code to use hostnames as well as IP addresses. -Abhijit.

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[Dovecot] Wanting to seperate MTA and Imap
by Brent Clark 26 Nov '07

26 Nov '07

Hi Current my set up is that the MTA and Dovecot (maildir) is on the same machine. Ive been asked to seperate the services from the same machine (too would like to add a secondary MTA - but thats future ideas). I read the documentation on NFS, but from other sites i have read. Most say this is NOT the best solution. My question is, how do some of the fellow dovecot users,or other companys, e.g. google etc, pull this off. If you can assist in helping me fine a solution and too help me understand, I would greatfully appreciate it. Kind Regards Brent Clark

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[Dovecot] libwrap-ing IMAP and POP logins
by Edgar Fuß 26 Nov '07

26 Nov '07

Since I've been using this for maybe a year now, maybe someone else is interested in restricting IMAP and POP logins via libwrap. In addition to the attached patch (against 1.0.5) to src/login-common/main.c, src/{imap,pop3}-login/Makefile.in have to be modified to link against libwrap. Of course, the option needs to be integrated into configure in the long run.

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[Dovecot] Sieve regex never matches
by frank.kintrup＠fkware.de 26 Nov '07

26 Nov '07

Hi, I found the following code on the net which should redirect all mails to another address depending on the time of day (useful for forwarding mails to work): require ["regex"]; if allof (header :regex "date" "(08|09|10|11|12|13|14|15|16|17):..:..", not header :regex "date" "(sat|sun)") { redirect "address@work>"; keep; } To check and test I simplified the regex to match all mails within a certain hour: require ["regex"]; if header :regex "date" "20:..:.." { redirect "user@domain"; keep; } Both scripts compile fine, but their regex never match. Has anyone an idea why? I'm using Dovecot 1.0.0 on Debian Etch stable. Frank

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[Dovecot] passdb ldap static values
by Harrison Metzger 26 Nov '07

26 Nov '07

Hello, In the pass_attrs field one can map ldap attributes to dovecot attributes. I'm wondering if I can map both ldap attribuets and static attributes to a dovecot value in the same passdb section. Also, I can't seem to find what other values (if any) can belong in the: passdb ldap { args = /path/filename } stanza. Are there any other options I can put in that stanza, I can't seem to find any on the wiki. Harrison Metzger

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[Dovecot] Disconnected: Mailbox is in inconsistent state, please relogin
by Kleyton M. 26 Nov '07

26 Nov '07

Bom dia, Pessoal eu tenho um servidor HP Proliant ML 110 com 4gb de memoria e processador Xeon. Minha distribuição é um Fedora Core 7 com Postfix + Procmail e este chama Spanassasim e Clamav Para IMAP, POP3 utilizo dovecot. Estava tendo o erro de Corrupted dovecot.index, atualizei da versao 1.05 para a 1.07 Agora o mesmo problema ocorre algumas messagens ficam presas na caixa e o usuario nao recebe atraves do outlook 2000 (pop3) e quando logo via IMAP alguns usuarios tem menssagens nao lidas que nao foram entregues por pop3 e no Maillog aparece: Nov 23 09:00:43 golf dovecot: IMAP(everli): Maildir /home/everli/Maildir sync: UID < next_uid (89 < 90, file = msg.BAwd:2,) Nov 23 09:00:43 golf dovecot: IMAP(everli): Disconnected: Mailbox is in inconsistent state, please relogin. Apos isso relogando ou clicando novamente na caixa de entrada e deslogando o dovecot entrega via POP3 essas menssagens nao lidas. Porque isso ? como resolvo esse problema pois a maioria utiliza outlook e não o IMAP Cordialmente; Kleyton Maia dos Santos ____________________________________________________________________________________ Get easy, one-click access to your favorites. Make Yahoo! your homepage. http://www.yahoo.com/r/hs

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[Dovecot] imap process killed with signal 11
by Daniel 26 Nov '07

26 Nov '07

Hi! Using the latest cvs from HEAD, I'm experiencing problems after sending a message and the client is trying upload the message to the appropriate (Sent/Queue) folder. I get only one error in dovecot.log: dovecot: Nov 25 14:21:31 Error: child 19554 (imap) killed with signal 11 So my client disconnects, and asks for the password again, and in dovecot.info I get nothing, but the logs of the new connection attempt. What else info should I provide? System is OpenBSD 4.2 $ dovecot -n # 1.1.beta8: /etc/dovecot.conf base_dir: /var/run/dovecot/ log_path: /var/log/mail/dovecot.log info_log_path: /var/log/mail/dovecot.info protocols: pop3 pop3s imap listen: 212.92.15.17 ssl_cert_file: /etc/ssl/dovecot_cert.pem ssl_key_file: /etc/ssl/private/dovecot_key.pem login_dir: /var/run/dovecot/login login_executable(default): /usr/local/libexec/dovecot/imap-login login_executable(imap): /usr/local/libexec/dovecot/imap-login login_executable(pop3): /usr/local/libexec/dovecot/pop3-login login_user: _dovecot login_processes_count: 1 login_max_processes_count: 10 max_mail_processes: 100 first_valid_uid: 8000 first_valid_gid: 8000 mail_location: maildir:~/Maildir/ mail_debug: yes dotlock_use_excl: yes mail_executable(default): /usr/local/libexec/dovecot/imap mail_executable(imap): /usr/local/libexec/dovecot/imap mail_executable(pop3): /usr/local/libexec/dovecot/pop3 mail_plugins: quota mail_plugin_dir(default): /usr/local/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 imap_client_workarounds(default): tb-extra-mailbox-sep imap_client_workarounds(imap): tb-extra-mailbox-sep imap_client_workarounds(pop3): pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh auth default: mechanisms: plain digest-md5 ntlm user: _dv_auth master_user_separator: * verbose: yes passdb: driver: passwd-file args: /etc/dovecot.passdb_master pass: yes master: yes passdb: driver: passwd-file args: /etc/dovecot.passdb userdb: driver: passwd-file args: /etc/dovecot.userdb socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: _postfix group: _postfix master: path: /var/run/dovecot/auth-master mode: 432 user: vmail group: vmail plugin: quota: maildir quota_rule: *:storage=100M quota_rule2: Trash:storage=50M -- Lévai Dániel Key ID: 0x4AC0A4B1 (wwwkeys.eu.pgp.net) Fingerprint: D037 03B9 C12D D338 4412 2D83 1373 917A 4AC0 A4B1

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[Dovecot] recalculation of maildir Quota
by Ingo Rogalsky 26 Nov '07

26 Nov '07

Hello, I intend to use maildir Quota for measurement only, not for applying restrictions. Therefore I defined rather high values. That's working as expected. Nevertheless it's not useful, because the recalculation time is to high. This takes some minutes for my own mailaccount with 250.000 mails on a NFS storage. This would be to bad, but whilst this time, the Mailclient hangs. Probably our users woulnd't accept this. Can this be done in the background? Furthermore I noticed that recalculation occurs after the file maildirsize gets longer than 30 lines (around 250-300 bytes) and not after 5120 bytes as the wiki states. Do I do/understand something wrong or is this a bug? Probably a nightly cronjob, which does calculation of Maildir-size would be a more useful alternative. Regards, Ingo Rogalsky

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[Dovecot] migrating from mbox to maildir
by Erick Perez 26 Nov '07

26 Nov '07

Hi all, I have a locking problem in a Centos 4.4 linux machine with the following config: dovecot-0.99.11-8.EL4 postfix-2.2.10-1.1.el4 I use virtual mailboxes with postfix currently I have dovecot with mbox as this: default_mail_env = mbox:/var/mail/virtualmail/%d/%n The problem is that mail is being delivered to mailboxes very very slowly (sometimes up to 4 hours). In my logs, I have tons of these messages: mail postfix/virtual[24965]: CFB8878D04F: to=<REMOVED@REMOVED>, relay=virtual, delay=51, status=deferred (mailbox /var/spool/mail/virtualmail/REMOVEDDOMAINNAME/npitti: unable to lock for exclusive access: Resource temporarily unavailable) then someone told me that I need to change dovecot to maildir format. Is there a reference to change format? Or some comments about this? Thanks in advance.

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[Dovecot] overquota message
by Emiliano Gabrielli (aka AlberT) 26 Nov '07

26 Nov '07

Hi, is it possible to customize the overquota message ? I'd like very much if it was possible to use the %d in the postmaster mail address (and overquota message) too ... in virtual domain environment it is very likely .. thanks in advance -- <?php echo ' Emiliano Gabrielli (aka AlberT) ',"\n", ' GrUSP founder - ZCE ',"\n", ' AlberT_at_SuperAlberT_it - www.SuperAlberT.it ',"\n", ' IRC: #php,#AES azzurra.com ',"\n",'ICQ: 158591185'; ?>

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[Dovecot] Squat full text search indexer redesign
by Timo Sirainen 26 Nov '07

26 Nov '07

I was writing this to beta9 announcement, but it grew so huge that I guess a separate mail is better. :) I've spent quite a lot of time this last week redesigning/rewriting Squat indexer. I think the redesign is good enough now that I'll just replace the existing squat with this new one in next release. I don't think many people are using the old squat, and there are also some bugs in it that cause some searches not to find anything (haven't tried to fix it). The old Squat indexes about 3MB/s on my machine while the new one indexes 8MB/s. Or it's actually 10MB/s, but at the end of indexing it does a compression step that merges all fragmented UID lists. That drops the index size something like 5-10%, but it's pretty slow because it has to go through all the fragmented lists. It could probably be optimized to be a lot faster, but I think I'll forget about it for now. Besides being faster there are other improvements in it: - Old squat could answer only 4 character long substring searches. New squat can answer 1..n characters long substring searches, where n can be configurable. The larger the n, the larger the index size. For example 4..10 index sizes are about 35% -> 46% -> 53% -> 59% -> 63% -> 67% -> 70% of the mailbox size (with 32MB of Dovecot mailing list archives). With both old and new squat if the search keyword is longer than n, Dovecot looks up the list of all possible n char long combinations of the word, gets a list of their common UIDs and then reads those mails to verify that the word is really found from them. - New squat can also be configured to index longer words for non-substring searches. This allows it to give a definite list of UIDs where the word is found, so Dovecot doesn't have to open those mails to verify it. However it can't give a definite list of UIDs where the substring isn't found. So it still has to do the n-char-combination lookup described above, and for those returned UIDs which aren't also in the definite-UIDs list Dovecot still has to read them to check if the substring is found or not. This could be skipped for non-standard X-FAST-TEXT and X-FAST-BODY searches which don't try to search substrings. Adding 255 char long non-substring searches to 4 char long substring searches grows the index about 7% (35%->42% for 32MB, 28%->36% for 200MB, 27%->33% for 1,4GB). Unfortunately it also grows memory usage pretty much. For a 200MB mailbox heap usage grows from 34MB to 163MB. For 1,4GB lkml mailbox heap usage grows from 80MB to 700MB. So I'm not sure if this should be enabled by default until something can be done about the memory usage. - The current list of indexed characters are: A-Z, 0-9, @.-+#$%_& and all 8bit chars. When trying to search for non-indexed characters Dovecot has to split the search word. For example "a,b" would search "a" and "b", combine the results and then open those mails to see where it really exists. The same thing happens with "a b". If the search word doesn't contain any indexable characters, Dovecot has to read all mails. This indexable character list could be changed runtime, so if a user keeps searching for some non-indexed character, it could be added to indexed characters and the index be rebuilt. - To be able to give definite replies for BODY searches squat has to keep track of whether a word was found from body or header. This also optimizes HEADER searches because then Dovecot has to search only those mails that have the word in their headers, instead of the mails that have it in either header or body. Unfortunately this makes the indexes somewhat larger again (22%->28% for 200MB), but I think this should be done by default. The header+body is stored by storing UID 1=message 1 header, UID 2=message 1 body, UID 3=message 2 header, etc. I haven't yet tried how well the UID lists could be compressed if could support only-header or only-body ranges. For example now if word is found from all headers but from no bodies, it stores the UID list as 1,3,5,7,etc, while it could be stored as simple "only bodies, 1:7". I guess the UID list compression could use all kinds of other algorithms as well. Currently it supports only the whole list being either a bitmask or UID range. A long UID list might compress better as a bitmask +range combination. UID lists take most of the Squat space, so even small improvements can give huge benefits. If you're interested in trying, you can download the current test code and modify uidlist_write_array() for writing and node_uidlist_get_at_offset() for reading. http://dovecot.org/tmp/test.c http://dovecot.org/tmp/test-uidlist.c Place to src/plugins/fts-squat/, run with ./test some-mbox-file Another somewhat different idea to substring indexing (suggested to me by someone else) would be to index the messages' words normally like most indexers do, and then use Squat indexes for those words. So for example when searching for "ord" it first looks up all words that contain "ord" substring in them. Then it looks up message UIDs for those words, and the resulting UID list is a definite list of messages that has the substring. I'm not sure how well the above would work in practise. If the list of words would be mostly static it would work great. Unfortunately every mail has at least two unique strings: Message-ID and Received header's ESMTP ID. Dovecot must be able to search those as well. Also with some languages, like Finnish, a single word can be written in tens of different ways and combined with other words. A quick preliminary testing for 32MB Dovecot mailing list shows: - 142265 unique words takes 2,0MB, one per line - indexing those words creates 6,7MB Squat indexes So not including extra overhead for the unique word index, these use a total of 8,8MB. 4-char-substring Squat indexes for the same mailbox take 8,5MB and 4-char-substring+255-char-full-word Squat indexes take 11MB. So this doesn't look very promising.

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[Dovecot] Configuration Error
by Mike McGonagle 26 Nov '07

26 Nov '07

Hello, I am a newbie when it comes to Dovecot, and in following this ( http://workaround.org/articles/ispmail-etch/ ) document in setting these things up, I have run into an error that I am not quite certain what to do... I am running Ubuntu Gutsy Gibbon, and using 1.0.5 for Dovecot. The message I am getting when I try to 'restart' Dovecot (using '/etc/init.d/dovecot restart') is: Error: Error in configuration file /etc/dovecot/dovecot.conf line 505: Protocol section not allowed here (section changed at line 505) Fatal: Invalid configuration in /etc/dovecot/dovecot.conf ...fail! Does this mean that I need to move this section of the configuration file to a different spot in the file? All I did was uncomment these things, and make the changes described in the link above, I would think that because this is just an edited version of the configuration file, that something like this shouldn't happen. Any help would be appreciated. Thank you, Mike -- Peace may sound simple—one beautiful word— but it requires everything we have, every quality, every strength, every dream, every high ideal. —Yehudi Menuhin (1916–1999), musician

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[Dovecot] Migrating from 0.99 to 1.0 - questions before upgrading
by Erick Perez 25 Nov '07

25 Nov '07

I order to investigate a locking problem, people in this forum suggested to upgrade from 0.99 to 1.0. Which is obviously a good response. However I have some special setup in dovecot.conf and I want to know if I will break something if I upgrade. So, here is my dovecot.conf 0.99 Note: Here are the only changes I made, the rest of the parameters were not touched and are #commented protocols = imap pop3 imaps pop3s imap_listen = * pop3_listen = * imaps_listen = * pop3s_listen = * ssl_disable = no log_path = /var/log/dovecot.log login_dir = /var/run/dovecot-login ## ## IMAP login process ## login = imap login_process_per_connection = no ## ## POP3 login process ## login = pop3 mail_extra_groups = mail postfix 1000 default_mail_env = mbox:/var/mail/virtualmail/%d/%n client_workarounds = oe6-fetch-no-newmail outlook-idle outlook-pop3-no-nuls mbox_locks = fcntl # Authentication process name. auth = default auth_mechanisms = plain auth_userdb = static uid=1000 gid=1000 home=/var/mail/virtualmail/%d/%u auth_passdb = passwd-file /etc/postfix/dovecotpasswd auth_user = root auth_verbose = yes Thanks in advance for your help Erick Perez

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Re: [Dovecot] Problems reading mbox mail boxes.
by James 24 Nov '07

24 Nov '07

Weird, The problem seems to have gone away, I can read all mail boxes now James

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[Dovecot] dspam integration
by Eugene Prokopiev 24 Nov '07

24 Nov '07

Hi, I see http://johannes.sipsolutions.net/Projects/dovecot-antispam and http://blog.cynapses.org/2007/09/13/dovecot-dspam-plugin/ solutions. Second git repo is not answer, first one is cloned, but I see some drawbacks with it. Dspam backend is more native solution but libdspam using instead of dspam external binary looks like preffered way to integrate dspam. Another problem is waiting for dspam child process exit, so IMAP session is blocked. Why not to fork and forget dspam child process? Email sender backend is non-blocking, but using MTA is great overhead. Calling external program with some args and mail body via pipe can be more suitable way, so external program may be dspam binary directly or shell/perl/python filter to any antispam engine via sendmail or something else. Has anybody plans to implement this features or it will be better to try it myself?

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[Dovecot] Weirdness and Questions...
by James 24 Nov '07

24 Nov '07

version 1.0.7 OK, so here is my weirdness. I sent mail to the server from the command line. mail username@localhost < /etc/passwd When I open /var/spool/mail/username I can see 2 messages. The "system" message at the top and the the message produced from my command line email. If I HUP the process that runs xinet.d and re-open the users mail spool the 2nd email disappears which I wouldn't expect. Has anyone seen this before. My SMTP server could be EXIM or Sendmail. My co- admin is in the process from switching over from to EXIM. I am not sure if the SMTP server has anything to do with it or not. I can see the contents of all the email in ~/mail which is rsynced from my old server so that seems to be working properly. I have mail_locatiion in my config file, do I need anything else? mail_location = mbox:~/mail:INBOX=/var/spool/mail/%u In my list of mailboxes that are in ~/mail I see 2 folders that I'd rather not see. There .customeflags and .INBOX Anyway to hide these, as they are not needed in my opinion. Thanks, James

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[Dovecot] Problems reading mbox mail boxes.
by James 24 Nov '07

24 Nov '07

I just installed dovecot 1.0.7 Set up the pem files for SSL, set up the xinet.d/imaps files and it logs into the server gets a list of all the mbox files in the ~/mail directory and creates representations of them in Apple mail. The problem I am having is when I click on one any of them I see no content. Execpt one. For some reason one of them shows the 2 emails that are inside of it. I am very confused by it. Help? James

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[Dovecot] deliver and append brocken in hg head ("tip"?)
by Jakob Hirsch 23 Nov '07

23 Nov '07

Hi, > Nov 22 18:48:15 seba deliver(jh): file maildir-uidlist.c: line 844 (maildir_uidlist_set_ext): assertion failed: (rec != NULL) > Nov 22 18:48:15 seba deliver(jh): Raw backtrace: /usr/local/libexec/dovecot/deliver(i_syslog_fatal_handler+0x2b) [0x80be37b] -> /usr/local/libexec/dovecot/deliver [0x80be18c] -> /usr/local/libexec/dovecot/deliver [0x8066e56] -> /usr/local/libexec/dovecot/deliver [0x8069f00] -> /usr/local/libexec/dovecot/deliver [0x806a041] -> /usr/local/libexec/dovecot/deliver(maildir_save_finish+0xec) [0x806a77c] -> /usr/local/libexec/dovecot/deliver(mail_storage_copy+0xfa) [0x80ad59a] -> /usr/local/libexec/dovecot/deliver(maildir_copy+0x52) [0x8067f42] -> /usr/local/libexec/dovecot/deliver(deliver_save+0xcf) [0x805945f] -> /usr/local/libexec/dovecot/deliver(main+0x12e5) [0x805a955] -> /lib/libc.so.6(__libc_start_main+0xe0) [0x948f70] -> /usr/local/libexec/dovecot/deliver [0x8058771]

2 1

Re: [Dovecot] dovecot loading during boot
by Karsten Bräckelmann 22 Nov '07

22 Nov '07

[ adding the list back to Cc ] On Thu, 2007-11-22 at 14:28 +0100, Marcus Rueckert wrote: > On 2007-11-22 13:31:59 +0100, Karsten Bräckelmann wrote: > > And impossible for SuSE out-of-the-box, given their > > braindead [1] init scripts. > > what is so braindead about it? See these posts, the second one in particular. Also, my original Shorewall rules and documentation might be interesting. http://www.mail-archive.com/shorewall-users@lists.sourceforge.net/msg03986.… http://www.mail-archive.com/shorewall-users@lists.sourceforge.net/msg03985.… Please note that the initial reason for the above pinning down NFS ports is firewall-friendly behavior and sane rules. With NFS, most involved services use random ports by default, particularly statd, lockd, mountd, rquotad. Which leads to somewhat unsatisfying rules as shown in [1]. The init script shipped by SuSE offers no way whatsoever to pass rpc.statd options, even though it does for rpc.mountd -- and thus no way to pin down the port out-of-the-box short of hacking the init script. Marcus, please feel free to keep me posted on this issue and a fix. I'll happily forward updates to the Shorewall lists. guenther [1] http://shorewall.net/ports.htm#NFS -- char *t="\10pse\0r\0dtu\0.@ghno\x4e\xc8\x79\xf4\xab\x51\x8a\x10\xf4\xf4\xc4"; main(){ char h,m=h=*t++,*x=t+2*h,c,i,l=*x,s=0; for (i=0;i<l;i++){ i%8? c<<=1: (c=*++x); c&128 && (s+=h); if (!(h>>=1)||!t[s+h]){ putchar(t[s]);h=m;s=0; }}}

2 2

[Dovecot] Broken system.
by Marcelo Iturbe 22 Nov '07

22 Nov '07

Hello, I had an Inbox with 975,604 emails on ext3 filesystem. I keept getting dropped on the comand "copy 1:2000 inbox2", the syslog gave me an error message indicating "out of memory" problems. This despite the fact that the server has 800MB of ram free. Anyways, I asked if I could manuanlly move the files at the filesystem level or if that would mess up dovecot (break the GUIDs etc). I was informed that dovecot does not use GUIDs and that I could go ahead and move the emails at the shell level. So I did that, now the /cur folder only has 40,000 emails, but when I connect to the account via telnet, I still get the following: telnet localhost 143 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. * OK Dovecot ready. 110 login somelameuser somelamepass 110 OK Logged in. 111 select inbox * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 975604 EXISTS * 0 RECENT * OK [UNSEEN 1] First unseen. * OK [UIDVALIDITY 1188426666] UIDs valid * OK [UIDNEXT 979500] Predicted next UID 111 OK [READ-WRITE] Select completed. So even though there are only 40,000 emails in /cur, dovecot still thinks that there are 9756304 emails. How can I fix this? Thanks Marcelo

4 4

[Dovecot] dovecot loading during boot
by Robert W Nocella 22 Nov '07

22 Nov '07

I have two RHEL4 email servers running postfix/MailScanner which use dovecot. They work great. But during bootup the nfslock script in my init.d loads rpc.statd and calls portmap to get a port number. Portmap keeps giving rpc.statd the imaps port number (993). I then have to stop my mail server services, manually start dovecot, then restart the mail server services and everything goes merrily on its way. Stopping the mail server services drops rpc.statd from using port 993(according to netstat -tlnp). This allows dovecot to take it by default. How to I reserve imap and imaps ports exclusively for use by dovecot. The imap and imaps ports are listed in /etc/services. Thanks for any insight. -- Robert W Nocella Systems Analyst III Computer Support Group Manager UNM ECE Department UNM SOE IT Agent

2 1

[Dovecot] Getting two mails.....
by Bjørn T Johansen 22 Nov '07

22 Nov '07

When I receive a mail that is addressed to my email address and also with a cc to a mailinglist I subscribe to, I get two mails, which I guess is expected... But I have just moved to Dovecot from Cyrus, and Cyrus seems to know that this is the same mail, so only one of those two mail is stored on the imap srv... Is there some option I am missing in Dovecot or isn't this possible using Dovecot? Regards, BTJ -- ----------------------------------------------------------------------------------------------- Bjørn T Johansen btj(a)havleik.no ----------------------------------------------------------------------------------------------- Someone wrote: "I understand that if you play a Windows CD backwards you hear strange Satanic messages" To which someone replied: "It's even worse than that; play it forwards and it installs Windows" -----------------------------------------------------------------------------------------------

5 9

[Dovecot] Creating "special" folders?
by Bjørn T Johansen 22 Nov '07

22 Nov '07

Is there anyway to make dovecot create Sent, Draft, etc folder automatically? Or is this the job for a MUA? Regards, BTJ -- ----------------------------------------------------------------------------------------------- Bjørn T Johansen btj(a)havleik.no ----------------------------------------------------------------------------------------------- Someone wrote: "I understand that if you play a Windows CD backwards you hear strange Satanic messages" To which someone replied: "It's even worse than that; play it forwards and it installs Windows" -----------------------------------------------------------------------------------------------

5 5

[Dovecot] pop3_lock_session and NFS
by salimlist＠sdv.fr 22 Nov '07

22 Nov '07

Hello, I need an advice about POP3 and NFS with Dovecot 1.0 (as 1.1 is still tagged beta) . I currently have all messages and indexes under a NFS partition . I thus turned cache off using actimeo=0 . Of course, my current architecture does not allow me to keep the same user on the same dovecot server. Now, I have some NFS issues with high percentages of getattr() . If I understood well, the cache must be disabled, because of the case of 2 differents computers could log on the same time and mess up the index file . If I use the directive pop3_lock_session and enable it, that should block conccurent pop3 access using a lock file . Can I consider it safe enough to turn on the NFS cache (ie removing actimeo=0) ? Thanks in advance Salim Ps: For you info, we use dovecot here for a big cable broadband ISP, with 2,000,000 mailboxes using 30 dovecot POP3 servers,10 dovecot proxy servers and we are really happy with your nice software, we expect a lot from 1.1 .

2 2

[Dovecot] virtual user login
by Paul A 21 Nov '07

21 Nov '07

Hi, I have server with multiple virtual domains and this server also accepts mail for the local domain. I'm using postfix and have the following setup for a virtual sales(a)domain.com mapped to custsales@localhost I was wondering if there is a way to login with the virtual email address, for example sales(a)domain.com? I would also like to still be able to login with the local user as well. TIA, P

2 1

[Dovecot] Re-download emails from pop3 server
by Evaggelos Balaskas 21 Nov '07

21 Nov '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 i use dovecot-1.0.7 for pop3 & imap and virtual users (via text) without any problem. But when my thunderbird is setup not to delete from server (pop3) every time i do get i redownload all my emails from the server. Can anybody advice ? - -ebalaskas.gr Unix System Engineer Informatics Engineer Technological Education -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHREmuWIK+Pe9twhoRAvCkAJ9WwdL9gqcfQGMMlfcZlmjtYxrkcgCgvJPt 5DwvkNFPEOwb7FT4Dt4YSns= =pyHc -----END PGP SIGNATURE-----

2 2

[Dovecot] convert plugin
by maximatt 21 Nov '07

21 Nov '07

hi.... i have problems with convert plugin, because he delete the message maildir inbox (i dont know this is't right)... i set dovecot (Dovecot v1.0.7) to listen with pop and imap protocols... for example.... if user1 sends to user2 a msg via pop3 or imap, i can see the msg in user2 imap account, but when i read messages from user2 pop account, i see the message, but the message was deleted from imap account.... ¿:(? these are my settings about this issue: mail_location: maildir:/export/home/vmail/prueba/%n mail_plugins(imap): quota imap_quota convert mail_plugins(pop3): quota convert pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %u plugin: quota: maildir convert_mail: mbox:~/mail:INBOX=/export/home/vmail/prueba/%u maybe i not understand yet wich if this plugin do :( thanks!!! :)

1 0

[Dovecot] Limiting the size of index files
by Edgar Fuß 21 Nov '07

21 Nov '07

Is there a way to limit the amount of disc space dovecot will use for its index cache? Other than putting that on a separate partition, I mean. We host our mail data on the file server, however, the index files are located on local discs on each of the mail servers and seem to grow without bounds. We're above 250M now and soon /var will run out of space. Thanks for any help.

4 5

[Dovecot] dovecot mysql support
by jan gestre 21 Nov '07

21 Nov '07

Hi Guys, I'm using CentOS 4.5, is the dovecot default rpm comes with mysql support? Do I need to rebuild it? TIA. jan

6 11

[Dovecot] Problem Running Dovecot 1.0.5
by dave 21 Nov '07

21 Nov '07

Hello, When trying to run dovecot I am getting the following error :- Error: Error in configuration file /usr/local/etc/dovecot.conf line 923: Unknown section type (section changed at line 923) Fatal: Invalid configuration in /usr/local/etc/dovecot.conf The following section is at line 923. userdb static { args = uid=5000 gid=5000 home=/var/spool/vmail/%d/%n allow_all_users=yes } It seems to be that dovecot does'nt understand the section, but I configured with support for static userdb and this was confirmed before compilation took place. OS is Solaris 9. Any advice would be appreciated. Thanks, David.

3 3

[Dovecot] Problems executing dovecot.
by Marcelo Iturbe 21 Nov '07

21 Nov '07

Hello, I am running OS: Ubuntu 6.06.1 LTS dovecot # 1.0.7 Beta Problem: I have all the email delivery set up with maildir. I currently have an account which has 297,261 emails in the Inbox. Here is a transcript of a telnet session with the server: * OK Dovecot ready. 110 login somelameuser lameuserspass 110 OK Logged in. 111 select inbox * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 297261 EXISTS * 149522 RECENT * OK [UNSEEN 1] First unseen. * OK [UIDVALIDITY 1188426666] UIDs valid * OK [UIDNEXT 301157] Predicted next UID 111 OK [READ-WRITE] Select completed. 112 copy 1:100 toBeProcessed Connection to host lost. I keep getting dropped... My original idea was to move the files via command prompt, but I wasn't sure if that was allowed, thought I might mess up the UIDs. How could I move the emails into other directories (folders) so that a regular IMAP conector can process the emails? Thanks for your help Marcelo -- Marcelo Iturbe ■ CIO ■ Tigabytes Chile ■ Google Enterprise Partner T: 562 264 1044 ■ www.tigabytes.com

5 5

[Dovecot] Received Dates/Squirrelmail
by Jeff Grossman 21 Nov '07

21 Nov '07

I am trying to figure out an issue I have with the e-mails in my inbox showing up in Squirrelmail. I sometimes get (more often than I care for it to happen) e-mails which show up as new either many hours ago or days ago. I have one particular e-mail that in Squirrelmail is showing a data of Tue, 8:23PM. The received header of that e-mail shows: Received: from murphy.debian.org (murphy.debian.org [70.103.162.31]) by apple.stikman.com (8.14.1/8.14.1/Debian-9) with ESMTP id lA1JGTli011052 for <x>; Thu, 1 Nov 2007 12:16:35 -0700 And the date header of that e-mail shows: Date: Tue, 30 Oct 2007 23:23:11 -0400 I have tried changing the Squirrelmail setting under Display Settings which says Use Received Date. Both options, yes and no makes the mail display the same way in Squirrelmail. Is this a problem with the way Dovecot is sending the information to Squirrelmail, or is this a problem with the way Squirrelmail is interpreting the data from Dovecot? Dovecot version is 1.1beta5 Squirrelmail is version 1.4.11 Thanks for any help you can offer me. Jeff

2 2

[Dovecot] Throttle New Connections?
by Joe Allesi -X (joallesi - Coyote Creek Consulting at Cisco) 21 Nov '07

21 Nov '07

All, Is anyone using iptables (recent module), or any other alternatives, to throttle the number of new imap or pop connections per minute? We have some applications that like to login every second to pull mail using imap, so we'd like to protect the entire dovecot server from these applications. We've already made the change over to high-perf mode, but we still need some type of denial of service protection. Any real-world data would be appreciated. Thanks!

4 4

[Dovecot] Just getting started
by Randall Donaldson 20 Nov '07

20 Nov '07

This is my first attempt at creating a mail server. I'm running postfix and dovecot on Fedora 7. So far the process has been very enlightening. I currently have the server able to send and receive messages for a domain from the server machine itself. In addition, I can SMTP from any client set up on the LAN by logging in. However, I cannot retrieve messages from remote clients on the LAN. Thunderbird reads "Connected to" {servername} across the bottom, then times out. I tried to telnet to port 110 on the server, and I no response, just hangs. Not sure where the problem lies. Thanks for any assistance. here's the output of dovecot -n: # 1.0.7: /etc/dovecot.conf login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_plugin_dir(default): /usr/lib/dovecot/imap mail_plugin_dir(imap): /usr/lib/dovecot/imap mail_plugin_dir(pop3): /usr/lib/dovecot/pop3 auth default: passdb: driver: pam userdb: driver: passwd Randall Donaldson Information Technology Stolze Printing

2 2

[Dovecot] virtual user login
by Paul A 20 Nov '07

20 Nov '07

Hi, I have server with multiple virtual domains and this server also accepts mail for the local domain. I'm using postfix and have the following setup for a virtual sales(a)domain.com mapped to custsales@localhost I was wondering if there is a way to login with the virtual email address, for example sales(a)domain.com? I would also like to still be able to login with the local user as well. TIA, P

2 1

[Dovecot] IMAP Proxy and Namespaces
by it-dovecot＠ml.epigenomics.com 20 Nov '07

20 Nov '07

Hi! Is it possible to combine these two features of dovecot, i.e. to have a specific namespace that proxies to another IMAP server? Greetings -- Robert Sander

2 1

[Dovecot] How to write plugin
by Eugene Prokopiev 20 Nov '07

20 Nov '07

Hi, Where can I find documentation for plugin writers? Now I see mail-log-plugin source, but I can't understand how entry points (functions mail-log-plugin-init and mail-log-plugin-deinit) are defined to execute some actions on load/unload/copy messages. Can anybody comments this?

2 2

[Dovecot] Mailbox is in inconsistent state
by Nikolay Shopik 20 Nov '07

20 Nov '07

I have few such messages should I aware about them or just ignore? Disconnected: Mailbox is in inconsistent state, please relogin.

2 2

[Dovecot] Helping OS's page cache
by Timo Sirainen 20 Nov '07

20 Nov '07

http://dovecot.org/patches/1.1/fadvise.diff http://dovecot.org/patches/1.0/fadvise.diff These patches try to tell kernel when mail files are wanted to be read and when they're wanted out of memory, so the memory could be used for more important things such as index files. I'd like to hear if someone sees any actual changes (for better or worse) in the system load because of this. I'm not sure if I should add this to v1.1 and if it should be enabled by default.

1 0

[Dovecot] src/lib/Makefile.am: a trivial ``$(srcdir)'' patch
by Ivan Shmakov 20 Nov '07

20 Nov '07

May I suggest the following trivial patch? diff -r ff9e591a2aa5 src/lib/Makefile.am --- a/src/lib/Makefile.am Sun Nov 18 21:44:22 2007 +0200 +++ b/src/lib/Makefile.am Tue Nov 20 00:29:04 2007 +0600 @@ -4,9 +4,9 @@ BUILT_SOURCES = unicodemap.c EXTRA_DIST = unicodemap.c unicodemap.pl -unicodemap.c: +$(srcdir)/unicodemap.c: test -f UnicodeData.txt || wget http://www.unicode.org/Public/UNIDATA/UnicodeData.txt - perl unicodemap.pl < UnicodeData.txt > $@ + perl $(srcdir)/unicodemap.pl < UnicodeData.txt > $@ liblib_a_SOURCES = \ backtrace-string.c \

2 1

[Dovecot] imap process consuming 100% CPU (Dovecot 1.0.3)
by Robert Tomanek 20 Nov '07

20 Nov '07

Hi, I have yet another problem with Dovecot: sometimes (rarely, maybe once every few days) one of the imap processes will 'hang', consuming all available CPU time. It does not seem to 'finish' in any reasonable amount of time (in one instance I waited a few days). This process will not even exit gracefully, it needs to be killed with 'kill -9 <PID>'. It has just happened again. The output from gdb is: > # gdb attach 29401 > GNU gdb 6.3 > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and you are > welcome to change it and/or distribute copies of it under certain conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for details. > This GDB was configured as "i586-suse-linux"...attach: No such file or directory. > > Attaching to process 29401 > Reading symbols from /usr/local/libexec/dovecot/imap...done. > Using host libthread_db library "/lib/tls/libthread_db.so.1". > Reading symbols from /lib/libdl.so.2...done. > Loaded symbols for /lib/libdl.so.2 > Reading symbols from /lib/tls/libc.so.6...done. > Loaded symbols for /lib/tls/libc.so.6 > Reading symbols from /lib/ld-linux.so.2...done. > Loaded symbols for /lib/ld-linux.so.2 > 0x0806049d in imap_sync_more (ctx=0x80d9770) at imap-sync.c:104 > 104 if (ctx->seq == 0) { > (gdb) bt full > #0 0x0806049d in imap_sync_more (ctx=0x80d9770) at imap-sync.c:104 > flags = 1075042320 > keywords = <value optimized out> > str = (string_t *) 0x80c31e0 > ret = 1 > #1 0x08060797 in cmd_sync_continue (cmd=0x80ccdbc) at imap-sync.c:207 > ctx = (struct cmd_sync_context *) 0x80cf000 > ret = <value optimized out> > #2 0x0805ad5a in _client_output (context=0x80ccd78) at client.c:465 > cmd = (struct client_command_context *) 0x80ccdbc > ret = 0 > #3 0x080af0bd in stream_send_io (context=0x80cceb0) at ostream-file.c:356 > ostream = (struct ostream *) 0x80ccee0 > ret = <value optimized out> > #4 0x080aa441 in io_loop_handler_run (ioloop=0x80cb9b0) at ioloop-epoll.c:203 > ctx = (struct ioloop_handler_context *) 0x80cb9d8 > list = (struct io_list *) 0x80d7780 > io = (struct io *) 0x80dc430 > tv = {tv_sec = 2, tv_usec = 540048} > events_count = 4 > t_id = 2 > msecs = <value optimized out> > ret = 1 > i = 0 > j = 1 > call = <value optimized out> > #5 0x080a9889 in io_loop_run (ioloop=0x80cb9b0) at ioloop.c:329 > No locals. > #6 0x08062087 in main (argc=1, argv=0xbffffaf4, envp=0xbffffafc) at main.c:290 > plugin_dir = <value optimized out> Mail log does not reveal anything immediately interesting. Thoughts? Server config ('dovecot -n -c /etc/dovecot/dovecot.conf'): > # 1.0.3: /etc/dovecot/dovecot.conf > base_dir: /var/run/dovecot/ > protocols: imap imaps pop3 pop3s > ssl_ca_file: /etc/ssl/current/cacert.pem > ssl_cert_file: /etc/ssl/current/server.pem > ssl_key_file: /etc/ssl/current/private.pem > disable_plaintext_auth: no > login_dir: /var/run/dovecot//login > login_executable(default): /usr/local/libexec/dovecot/imap-login > login_executable(imap): /usr/local/libexec/dovecot/imap-login > login_executable(pop3): /usr/local/libexec/dovecot/pop3-login > first_valid_uid: 50 > mail_debug: yes > mail_drop_priv_before_exec: yes > mail_executable(default): /usr/local/libexec/dovecot/imap > mail_executable(imap): /usr/local/libexec/dovecot/imap > mail_executable(pop3): /usr/local/libexec/dovecot/pop3 > mail_plugin_dir(default): /usr/local/lib/dovecot/imap > mail_plugin_dir(imap): /usr/local/lib/dovecot/imap > mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 > mail_log_prefix: %Us(%u)(%p): > pop3_uidl_format(default): > pop3_uidl_format(imap): > pop3_uidl_format(pop3): %08Xu%08Xv > auth default: > debug_passwords: yes > passdb: > driver: passwd-file > args: /etc/dovecot/passwd > userdb: > driver: passwd-file > args: /etc/dovecot/passwd > socket: > type: listen > client: > path: /var/spool/postfix/private/auth > mode: 432 > user: postfix > group: postfix -- Best regards, Robert Tomanek mailto:rth23@poczta.onet.pl

4 14

[Dovecot] mail_location backends
by Harrison Metzger 19 Nov '07

19 Nov '07

Hello, Where I work we have have an interesting setup, we have 2 machines with mail accounts on them and both have dovecot. We would really like to centralize all the mail accounts on one machine, but unfortunately the administration has not approved it. However, if we could create the "illusion" that they are on the same machine that would be acceptable. If we have a 3rd machine, lets say called mail.example.com, could we install dovecot on it (using LDAP authorization), such that when a user connects to this machine, it then connects to one of the 2 other machines to retrieve their mail (instead of reading from /var/spool/mail). So in essence, the mail backend is just another POP or IMAP server. In the ldap directory we could have a field that says the mail location is: "imap://machine1.example.com" for some users and "imap://machine2.example.com" (Of course it dosent have to look like that, but I hope you get my idea), then dovecot would make a connection to those servers and read the user's mail. Does such a backend even exist? Can dovecot's plugin support register a mail_location backend (such as mbox:/blah/blah, ...)? Harrison Metzger

2 1

[Dovecot] deliver and namespaces in 1.1
by Nikolay Shopik 19 Nov '07

19 Nov '07

> Namespaces are supported everywhere now. Does this means what we can finally use "deliver" to deliver messages in namespaces?

4 5