- dovecot - dovecot.org

[Dovecot] Documentation of Redis and Memcache Backends
by Urban Loesch 18 Dec '12

18 Dec '12

Hi, in the release notes of 2.1.9 I read that dovecot supports memcache and redis backends for userdb/passdb authentication. This is very interesting for me and should reduce queries and database load of our mysql servers. My idea is to use memcache or redis in our IMAP/POP3 proxies in front of our backend servers. So I would like to try out if it's possible to store proxy information of our backends. For example the backend ip adress. But in the wiki I found only a few configuration settings for redis backend. http://master.wiki2.dovecot.org/AuthDatabase/Dict Also the mentioned example config file "dovecot-dict-auth.conf.ext" with full list of configuration options does not exits in the source of 2.1.11. Have you any idea where I can find the full info or any howtos? Many thanks and regards Urban

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[Dovecot] Error: unlink_directory(.../lucene-indexes) with doveadm index
by Fred Kilbourn 18 Dec '12

18 Dec '12

Hi, Per discussion on this previous thread: http://dovecot.org/pipermail/dovecot/2012-October/068849.html I am updating search indexes on all my mailboxes via a nightly cronjob that runs: doveadm index -A '*' The problem we're running into is that random mailboxes will throw the following error during the update (sanitized to conceal actual domain name): doveadm(user(a)domain.com): Error: unlink_directory(/var/spool/mail/domain.com/user/sdbox/lucene-indexes) failed: Permission denied We have around 250 domains on the server, with a handful of mailboxes on average in each domain. We get this for a varying number of total mailboxes (1 to 6 every night). It is common for the same mailbox to show up a few days in a row and then stop throwing the error. The script is running as root, so there shouldn't be any file level permissions. Any thoughts on the root cause of these errors? What can I provide to help further diagnose? Thanks, Fred Kilbourn

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[Dovecot] indexer-worker Panic
by Dave Abrahams 18 Dec '12

18 Dec '12

I just found this in my logs. Any idea? --8<---------------cut here---------------start------------->8--- 12/4/12 12:33:43.831 PM dovecot[2660]: indexer-worker(dave): Panic: file mailbox-list-fs.c: line 156 (fs_list_get_path): assertion failed: (mailbox_list_is_valid_pattern(_list, name)) 12/4/12 12:33:43.831 PM dovecot[2660]: indexer-worker(dave): Error: Raw backtrace: 2 libdovecot.0.dylib 0x000000010840e6c4 default_fatal_finish + 36 -> 3 libdovecot.0.dylib 0x000000010840f3e1 i_internal_fatal_handler + 49 -> 4 libdovecot.0.dylib 0x000000010840e98e i_panic + 158 -> 5 libdovecot-storage.0.dylib 0x0000000108340693 fs_list_get_path + 467 -> 6 indexer-worker 0x00000001082e7341 master_connection_input + 513 -> 7 libdovecot.0.dylib 0x000000010841b5 12/4/12 12:33:43.831 PM dovecot[2660]: indexer-worker(dave): Error: ce io_loop_call_io + 46 -> 8 libdovecot.0.dylib 0x000000010841c737 io_loop_handler_run + 215 -> 9 libdovecot.0.dylib 0x000000010841b7e8 io_loop_run + 88 -> 10 libdovecot.0.dylib 0x00000001084079c8 master_service_run + 24 -> 11 indexer-worker 0x00000001082e7001 main + 321 -> 12 libdyld.dylib 0x00007fff93d117e1 start + 0 -> 13 ??? 0x0000000000000001 0x0 + 1 12/4/12 12:33:44.035 PM dovecot[2660]: indexer: Error: Indexer worker disconnected, discarding 5 requests for dave 12/4/12 12:33:44.036 PM dovecot[2660]: indexer-worker(dave): Fatal: master: service(indexer-worker): child 2665 killed with signal 6 (core dumps disabled) 12/4/12 12:34:17.094 PM dovecot[2660]: indexer-worker(dave): Panic: file mailbox-list-fs.c: line 156 (fs_list_get_path): assertion failed: (mailbox_list_is_valid_pattern(_list, name)) 12/4/12 12:34:17.094 PM dovecot[2660]: indexer-worker(dave): Error: Raw backtrace: 2 libdovecot.0.dylib 0x000000010d1dd6c4 default_fatal_finish + 36 -> 3 libdovecot.0.dylib 0x000000010d1de3e1 i_internal_fatal_handler + 49 -> 4 libdovecot.0.dylib 0x000000010d1dd98e i_panic + 158 -> 5 libdovecot-storage.0.dylib 0x000000010d10d693 fs_list_get_path + 467 -> 6 indexer-worker 0x000000010d0b7341 master_connection_input + 513 -> 7 libdovecot.0.dylib 0x000000010d1ea5 12/4/12 12:34:17.094 PM dovecot[2660]: indexer-worker(dave): Error: ce io_loop_call_io + 46 -> 8 libdovecot.0.dylib 0x000000010d1eb737 io_loop_handler_run + 215 -> 9 libdovecot.0.dylib 0x000000010d1ea7e8 io_loop_run + 88 -> 10 libdovecot.0.dylib 0x000000010d1d69c8 master_service_run + 24 -> 11 indexer-worker 0x000000010d0b7001 main + 321 -> 12 libdyld.dylib 0x00007fff93d117e1 start + 0 -> 13 ??? 0x0000000000000001 0x0 + 1 12/4/12 12:34:17.286 PM dovecot[2660]: indexer: Error: Indexer worker disconnected, discarding 5 requests for dave 12/4/12 12:34:17.286 PM dovecot[2660]: indexer-worker(dave): Fatal: master: service(indexer-worker): child 2677 killed with signal 6 (core dumps disabled) 12/4/12 12:35:48.633 PM dovecot[2660]: indexer-worker(dave): Panic: file mailbox-list-fs.c: line 156 (fs_list_get_path): assertion failed: (mailbox_list_is_valid_pattern(_list, name)) 12/4/12 12:35:48.633 PM dovecot[2660]: indexer-worker(dave): Error: Raw backtrace: 2 libdovecot.0.dylib 0x0000000107b606c4 default_fatal_finish + 36 -> 3 libdovecot.0.dylib 0x0000000107b613e1 i_internal_fatal_handler + 49 -> 4 libdovecot.0.dylib 0x0000000107b6098e i_panic + 158 -> 5 libdovecot-storage.0.dylib 0x0000000107a95693 fs_list_get_path + 467 -> 6 indexer-worker 0x0000000107a3d341 master_connection_input + 513 -> 7 libdovecot.0.dylib 0x0000000107b6d5 12/4/12 12:35:48.634 PM dovecot[2660]: indexer-worker(dave): Error: ce io_loop_call_io + 46 -> 8 libdovecot.0.dylib 0x0000000107b6e737 io_loop_handler_run + 215 -> 9 libdovecot.0.dylib 0x0000000107b6d7e8 io_loop_run + 88 -> 10 libdovecot.0.dylib 0x0000000107b599c8 master_service_run + 24 -> 11 indexer-worker 0x0000000107a3d001 main + 321 -> 12 libdyld.dylib 0x00007fff93d117e1 start + 0 -> 13 ??? 0x0000000000000001 0x0 + 1 12/4/12 12:35:48.838 PM dovecot[2660]: indexer: Error: Indexer worker disconnected, discarding 5 requests for dave 12/4/12 12:35:48.838 PM dovecot[2660]: indexer-worker(dave): Fatal: master: service(indexer-worker): child 2694 killed with signal 6 (core dumps disabled) --8<---------------cut here---------------end--------------->8--- -- Dave Abrahams BoostPro Computing Software Development Training http://www.boostpro.com Clang/LLVM/EDG Compilers C++ Boost

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[Dovecot] Dovecot version 1.2.17
by Philip Coackley 18 Dec '12

18 Dec '12

Hello, I am currently performing retrospective upgrades to an old ubuntu 9.10 Karmic Kola server. I need to upgrade dovecot 1.1.11 to 1.2.17 then to 2.0 etc. I have downloaded the binaries and run ./configure make make install. Dovecot compiles OK however I can not get the ./configure options to install at the following locations: executable: /usr/sbin/ config: /etc/dovecot/ Question: What are the ./configure options to do this? What are the ./configure options used to create the executable for unbuntu? (especially 9.10 if different). Reason for upgrade is auth-login errors every 2-3 weeks with 1.1.11 - looking at the release descriptions, this should fix this and the memory leaks! Phil Coackley

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[Dovecot] Possible bug not sure on which end
by joshua.trier＠hostrocket.com 17 Dec '12

17 Dec '12

Hello Serveral of our clients are running into a problem relating to Gmails change in their "Check mail from other accounts (using POP3):". It seems related to the response dovecot sends back on a connection. Gmail is checking for a +OK in the header, however dovecot is sending OK without a prefix of +. Here is the response from Gmail webmail "Missing +OK response upon connecting to the server: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready." Here is dovecot header on a pop3-ssl connection * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN AUTH=LOGIN] Dovecot ready. Who's end is this problem on? Google's, dovecots? Anyway to enable the response to include a +? Thanks Josh

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Re: [Dovecot] Non-dovecot user looking for feedback
by Joseph Tam 17 Dec '12

17 Dec '12

On Mon, 17 Dec 2012, Chris Ross wrote: > 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. I converted a few years ago and never looked back. > 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? I still run using mbox, and have not had a problem with corruption, however, this is probably owing to our modest IMAP demand and careful coordination of file locks among all the different MUAs. You're better off with Maildir and other formats, that are better designed for simultaneous access. There are other good reasons to switch formats. Dovecot also supports its own mdbox/sdbox for high performance: its a hybrid that tries to incorporate the best of both words. More info http://wiki2.dovecot.org/MailboxFormat > After those questions, it's just a "what do you think the pros and cons > of each are?" I can't speak to the other software you are looking at, but two factors I found to be particularly good: - flexibility: you can get almost every oddball setup to work. Migration from uw-imapd is fairly easy, but then again, uw-imapd didn't have a lot of knobs to turn. Plugins are available that extends its functionality. - support: this mailing list is great, and Timo is an absolute wizard in getting bugs fixed. (Note: I am shamelessly buttering him up so that he fixes the outstanding bug I reported!) Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] more than one password_query
by goffer 16 Dec '12

16 Dec '12

Hello, I use dovecot + postfix with postfix sasl authentication by dovecot auth service. I have one question. Is it possible to have separate password_query only for auth service. I have two fields in database, one permits login to imap pop, second I want to use to permit login to smtp. Please explain how to set this (if it is possible) or give me some direction and sorry my English. -- View this message in context: http://dovecot.2317879.n4.nabble.com/more-than-one-password-query-tp39282.h… Sent from the Dovecot mailing list archive at Nabble.com.

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[Dovecot] need help with dovecot-lda
by Andreas Meyer 16 Dec '12

16 Dec '12

Hello all! Some month ago I upgraded our dovecot installation from version 1.0.5 to version 2.1.7 without having any trouble. Postfix is delivering email directly per virtual transport to the maildirs and mailboxes of the users in /var/spool/vhosts/domains/.... Now I want to use dovecot-lda and created a new entry in the master.cf of postfix. dovecot unix - n n - - pipe flags=DRhu user=vmail:vmail argv=/usr/libexec/dovecot/dovecot-lda -f ${sender} -d ${recipient} It is not clear to me, how the dovecot-lda is started bei dovecot and you it finds the socket dovecot postfix created. The dovecot.conf looks like this; # 2.1.7: /etc/dovecot/dovecot.conf # OS: Linux 2.6.22.5-31-bigsmp i686 openSUSE 10.3 (i586) ext3 auth_verbose = yes disable_plaintext_auth = no log_path = /var/log/dovecot1 mail_location = mbox:/var/spool/vhosts/%d/dovecotprivate/%n:INBOX=/var/spool/vhosts/%d/%n !include /etc/dovecot/conf.d/*.conf passdb { args = /etc/dovecot/passwd driver = passwd-file } userdb { args = /etc/dovecot/passwd driver = passwd-file } ssl_cert = < /etc/dovecot/ssl/hostcert.pem ssl_key = < /etc/dovecot/ssl/hostkey.pem #verbose_ssl = yes plugin { quota = maildir:User quota quota_rule = *:storage=500MB # 10% of 1GB = 100MB quota_rule2 = Trash:storage=+10%% # 20% of 1GB = 200MB # quota_rule3 = Spam:storage=+20%% autocreate = Trash autocreate2 = Drafts autocreate3 = Sent autosubscribe = Trash autosubscribe2 = Drafts autosubscribe3 = Sent } I set soft_bounce = yes in main.cf of postfix and delivery of mail fails with Dec 14 16:13:34 delta postfix/virtual[14082]: BBC0F1B31294: to=<xyz(a)anup.de>, relay=virtual, delay=395, delays=395/0.01/0/0.13, dsn=4.1.1, status=SOFTBOUNCE (unknown user: "xyz(a)anup.de") This is the relevant part of the main.cf: dovecot_destination_recipient_limit = 1 virtual_mailbox_domains = anup.de bit-corner.de bitcorner.de baubetreuung-meyer.de saxelektro.de virtual_mailbox_base = /var/spool/vhosts #virtual_mailbox_maps = hash:/etc/postfix/vmailbox #virtual_minimum_uid = 100 #virtual_uid_maps = static:5000 #virtual_gid_maps = static:5000 virtual_mailbox_limit = 524288000 virtual_transport = dovecot I don't get it right. As far as I understand postfix uses virtual_transport = dovecot and hands the mail over to the socket dovecot. But how does dovecot know where to look for the socket. I am missing somthing but don't know what. Any help is appreciated! Andreas

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[Dovecot] Dovecot "sleep" for short snapshots
by Peer Heinlein 15 Dec '12

15 Dec '12

Making consistent backups from Dovecot with mdbox requires a snapshoted filesystem with (at least) a short Downtime for Dovecot. I'd like to avoid killing several thenthousand IMAP-sessions for 60 seconds. Users don't like that... And the admin dislakes that too... What about a "short sleep" mechanism for Dovecot, where all writes are finished and new writes are easily delayed? I'd like to following process: *) "doveadm sleep" puts Dovecot in sleep-Mode: -- All existing writes are finished (before "doveadm sleep" is allowed to exit) -- All new writes are simply delayed -- All readonly-operations could work normally, so users can fetch and read mails *) The the admin can create a LVM-/SAN-snapshot of the filesystems *) "doveadm unsleep" will finish the magic Overall the whole process will take just some seconds. Users will recognize a simple write-delay, but they can work normally and the aren't unconnected at all. If the snapshot is really fast the users won't recognize the whole situation at all. Peer -- Heinlein Support GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-42 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin

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[Dovecot] BUG: mishandling of username if it's a keyword?
by Jack Bates 14 Dec '12

14 Dec '12

Dec 14 14:33:03 test2 dovecot: auth: Debug: auth client connected (pid=24143) Dec 14 14:33:14 test2 dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=pop3#011secured#011session=D6dl6dDQdAAAAAAAAAAAAAAAAAAAAAAB#011lip=::1#011rip=::1#011lport=110#011rport=38004#011resp=<hidden> Dec 14 14:33:14 test2 dovecot: auth: Debug: static(home,::1,<D6dl6dDQdAAAAAAAAAAAAAAAAAAAAAAB>): lookup Dec 14 14:33:14 test2 dovecot: auth: Debug: client passdb out: OK#0111#011user=home Dec 14 14:33:14 test2 dovecot: auth: Debug: master in: REQUEST#0112033451009#01124143#0111#011243997dcca92c2dc1d1e401c78b4ea4f Dec 14 14:33:14 test2 dovecot: auth: Debug: master userdb out: USER#0112033451009#011uid=503#011gid=503#011home=/nfs/maildir/vmail/home#011mail_location=maildir:~/Maildir Dec 14 14:33:14 test2 dovecot: pop3-login: Login: user=<home>, method=PLAIN, rip=::1, lip=::1, mpid=24145, secured, session=<D6dl6dDQdAAAAAAAAAAAAAAAAAAAAAAB> Dec 14 14:33:14 test2 dovecot: pop3: Debug: Added userdb setting: mail_location=maildir:~/Maildir Dec 14 14:33:14 test2 dovecot: pop3(uid=503): Error: user uid=503: Couldn't drop privileges: User is missing UID (see mail_uid setting) Dec 14 14:33:14 test2 dovecot: pop3(uid=503): Error: Internal error occurred. Refer to server log for more information. compared to: Dec 14 14:37:25 test2 dovecot: pop3-login: Login: user=<home2>, method=PLAIN, rip=::1, lip=::1, mpid=24190, secured, session=<5Zdb+NDQdQAAAAAAAAAAAAAAAAAAAAAB> Dec 14 14:37:25 test2 dovecot: pop3: Debug: Added userdb setting: mail_location=maildir:~/Maildir Dec 14 14:37:25 test2 dovecot: pop3(home2): Debug: Effective uid=503, gid=503, home=/nfs/maildir/vmail/home2 userdb { args = uid=vmail gid=vmail home=/nfs/maildir/vmail/%u mail_location=maildir:~/Maildir driver = static } This was tested on a static passdb/userdb on a test server as well as production. version 2.1.10. When I have time, I'll dig into it myself after an upgrade to 2.1.12. Jack

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[Dovecot] can't connect to server
by Bernics Gábor | Penta Unió Zrt. 14 Dec '12

14 Dec '12

Hello, I can't connect to a dovecot server (Debian 6.0, default version of Dovecot), I started the daemon but I didn't see errors on console. dovecot-lda works. logs: 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: Loading modules from directory: /usr/lib/dovecot/modules/lda 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: Module loaded: /usr/lib/dovecot/modules/lda/lib10_quota_plugin.so 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: Module loaded: /usr/lib/dovecot/modules/lda/lib90_sieve_plugin.so 2012-12-14 12:47:10 auth(default): Info: master in: USER<------>1<----->bernics.gabor(a)penta.hu<>service=deliver 2012-12-14 12:47:10 auth-worker(default): Info: sql(bernics.gabor(a)penta.hu): query: SELECT email AS user, password FROM users WHERE email 2012-12-14 12:47:10 auth(default): Info: password(bernics.gabor(a)penta.hu): Credentials: 54617661737a69737a656c 2012-12-14 12:47:10 auth(default): Info: master out: USER<----->1<----->bernics.gabor(a)penta.hu 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: Quota root: name=user backend=dict args=:proxy::quotadict 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: dict quota: user=bernics.gabor(a)penta.hu, uri=proxy::quotadict, noenforcing=0 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: maildir: data=/home/vmail/mail/penta.hu/bernics.gabor(a)penta.hu/Maildir 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: maildir++: root=/home/vmail/mail/penta.hu/bernics.gabor(a)penta.hu/Maildir, inde 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: dict quota: user=bernics.gabor(a)penta.hu, uri=proxy::quotadict, noenforcing=0 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: sieve: user's script path /home/vmail/penta.hu/bernics.gabor(a)penta.hu/Maildir/ 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: sieve: using sieve path for user's script: /etc/dovecot/dovecot.sieve 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: sieve: executed before user's script(1): /etc/dovecot/dovecot.sieve.before 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: sieve: opening script /etc/dovecot/dovecot.sieve.before 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: sieve: opening script /etc/dovecot/dovecot.sieve 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: Namespace : Using permissions from /home/vmail/mail/penta.hu/bernics.gabor@pen 2012-12-14 12:47:10 deliver(bernics.gabor(a)penta.hu): Info: sieve: msgid=<20121214114708.5BD7917402D(a)mail2.penta.hu>: stored mail into mai config: http://pastebin.com/4imMFZSi Best Regards, Gabor

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[Dovecot] Copying just the folders to new Dovecot server?
by Bjørn T Johansen 14 Dec '12

14 Dec '12

I am setting up a new Dovecot server and I want to start from scratch, i.e. with an empty mailbox. But I want to have the same folders in my new mailbox that I have in my old. Is there a way to create these folders without manually creating one by one? 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" ----------------------------------------------------------------------------------------------- -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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[Dovecot] Dovecote Warnings
by anarchos78 14 Dec '12

14 Dec '12

Greetings, I have setup Postfix/Dovecote on Ubuntu 12.04 (apt-get install mail-stack-delivery). While everything is working fine in the mail server I have niticed the following errors: srv dovecot: config: Warning: NOTE: You can get a new clean config file with: doveconf -n > dovecot-new.conf: 2 Time(s) srv dovecot: config: Warning: Obsolete setting in /etc/dovecot/conf.d/01-mail-stack-delivery.conf:13: listen=..:port has been replaced by service { inet_listener { port } }: 2 Time(s) srv dovecot: config: Warning: Obsolete setting in /etc/dovecot/conf.d/01-mail-stack-delivery.conf:13: protocol { listen } has been replaced by service { inet_listener { address } }: 2 Time(s) srv dovecot: config: Warning: Obsolete setting in /etc/dovecot/conf.d/01-mail-stack-delivery.conf:14: protocol { ssl_listen } has been replaced by service { inet_listener { address } }: 2 Time(s) srv dovecot: config: Warning: Obsolete setting in /etc/dovecot/conf.d/01-mail-stack-delivery.conf:14: ssl_listen=..:port has been replaced by service { inet_listener { port } }: 2 Time(s) srv dovecot: config: Warning: Obsolete setting in /etc/dovecot/conf.d/01-mail-stack-delivery.conf:21: listen=..:port has been replaced by service { inet_listener { port } }: 2 Time(s) srv dovecot: config: Warning: Obsolete setting in /etc/dovecot/conf.d/01-mail-stack-delivery.conf:21: protocol { listen } has been replaced by service { inet_listener { address } }: 2 Time(s) srv dovecot: config: Warning: Obsolete setting in /etc/dovecot/conf.d/01-mail-stack-delivery.conf:22: protocol { ssl_listen } has been replaced by service { inet_listener { address } }: 2 Time(s) *The "01-mail-stack-delivery.conf" file looks like this:* # Some general options protocols = imap pop3 sieve disable_plaintext_auth = yes ssl = yes ssl_cert = </etc/ssl/certs/ssl-mail.pem ssl_key = </etc/ssl/private/ssl-mail.key ssl_cipher_list = ALL:!LOW:!SSLv2:ALL:!aNULL:!ADH:!eNULL:!EXP:RC4+RSA:+HIGH:+MEDIUM mail_location = maildir:~/Maildir auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ # IMAP configuration protocol imap { listen = *:143 ssl_listen = *:993 mail_max_userip_connections = 10 imap_client_workarounds = delay-newmail } # POP3 configuration protocol pop3 { listen = *:110 ssl_listen = *:995 mail_max_userip_connections = 10 pop3_client_workarounds = outlook-no-nuls oe-ns-eoh } # LDA configuration protocol lda { postmaster_address = postmaster mail_plugins = sieve quota_full_tempfail = yes deliver_log_format = msgid=%m: %$ rejection_reason = Your message to <%t> was automatically rejected:%n%r } # Plugins configuration plugin { sieve=~/.dovecot.sieve sieve_dir=~/sieve } # Authentication configuration auth_mechanisms = plain login service auth { # Postfix smtp-auth unix_listener /var/spool/postfix/private/dovecot-auth { mode = 0660 user = postfix group = postfix } } What is going wrong with Dovecote. I am a newcomer and i need little help. Many thanks, Tom Greece -- View this message in context: http://dovecot.2317879.n4.nabble.com/Dovecote-Warnings-tp39221.html Sent from the Dovecot mailing list archive at Nabble.com.

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[Dovecot] More detail re dovecot-uidlist and -uidvalidity files
by Dale Gallagher 13 Dec '12

13 Dec '12

Regarding the dovecot-uidlist header (first line) - I've tried to search for and figure out what exactly is meant by the "mailbox global uid" and once I do, how to manually generate the 128 bit hex variation of it? Could someone elaborate on this, please. How would omitting the global uid field, beginning with G, affect remote clients' syncing of mail? Is this field mandatory? Would "3 V$uid_validity N$next_uid" be sufficient to ensure that clients don't re-download everything? I also see that Dovecot's dovecot-uidvalidity is of the form 4df8a4e2, whereas the IMAP syncing utility which I'm using (isync) uses an integer. I'd appreciate it if someone could elaborate on what Dovecot uses and whether I need to convert one to the other (ie. after syncing with isync, do I need to convert it to work with Dovecot? Thanks.

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Re: [Dovecot] number of imap connection
by Joseph Tam 13 Dec '12

13 Dec '12

<klimenko.n(a)theitidea.ru> writes: > how to calculate the expected number of imap processes? Set your mail_max_userip_connections to a large value (~20) and run "doveadm who" periodically to look at your user's actual connection counts. > how many imap processes must be used for each user? > i have 6-7 connection for each one user > is it normal behavior? It's typical. Some popular mail readers open about 5, some more, some less. I set my mail_max_userip_connections at 12 even though there are some users who regularly bump up against this. They don't seem to notice -- dovecot probably bumps off the least recently used connection and their mail reader reconnects if it needs to open that mailbox again. Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] number of imap connection
by Николай Клименко 13 Dec '12

13 Dec '12

Hi to all. how to calculate the expected number of imap processes? how many imap processes must be used for each user? i have 6-7 connection for each one user is it normal behavior? thx.

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[Dovecot] rare ssl issue
by Eduardo Casarero 12 Dec '12

12 Dec '12

I'am having a rare situation with ssl connections. I can connect to 993/995 but the connection never starts. >From the client side i test with: $ openssl s_client -connect example.com:993 CONNECTED(00000003) and stays like that... waiting. In the other side i see in dovecot logs: Disconnected: Inactivity (no auth attempts): rip=x.x.x.x, lip=x.x.x.x, TLS handshaking this happens from some networks only, so i think that mi isp (where the server is hosted) is doing some kind of shaping. But if i try to connect to port 465 for example, or 443 it works like a charm. i am talking to my isp, but i thougth that someone may have a hint or any comment that could help. regards, eduardo.

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[Dovecot] [vnd.dovecot.pipe] - timeout settings
by kjonca＠o2.pl 12 Dec '12

12 Dec '12

In install file we can read that: sieve_<extension>_exec_timeout = 10s set timeout for executing program. But regardless of setting this value (say sieve_pipe_exec_timeout=86000) I got: --8<---------------cut here---------------start------------->8--- 2012-12-10 20:55:33 LDA(kjonca): Debug: sieve: action pipe: running program: maildrop.sh 2012-12-10 20:55:43 LDA(kjonca): Debug: program `/home/kjonca/sieve/bin/maildrop.sh' execution timed out: sending TERM signal --8<---------------cut here---------------end--------------->8--- What am I doing wrong? KJ -- http://modnebzdury.wordpress.com/2009/10/01/niewiarygodny-list-prof-majewsk… When does summertime come to Minnesota, you ask? Well, last year, I think it was a Tuesday.

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[Dovecot] dovcot+offlineimap+gmail: INBOX empty, mail doubled
by Uwe Brauer 11 Dec '12

11 Dec '12

Hello I have used for years offlineimap-6.2.0 dovecot-imapd 1:1.2.9 in Kubuntu 10.04 Together with a imap server of my university. Yesterday we switched to google, which I know, is not a real imap server. I have 2 problems and the first I think has to do with either an old version of offlineimap or a bad configuration file: - All folders are downloaded+ Gmail[All Mail] so doubling my mail. - My INBOX folder is empty, however this is the only folder for which offlinemap gives the following warning: Syncing INBOX: Gmail -> MappedIMAP WARNING: UID validity problem for folder INBOX (repo UniLocal) (saved 1309334376; got 1355232397); skipping it So maybe this is also a offlineimap fault. In any case I have googled around and found out that I am not the only person suffering this problem. I have attached my configuration file in the hope that may be somebody could give me a hint. Thanks in advance Uwe Brauer --8<------------------------schnipp------------------------->8--- [general] accounts = Uni ui = Noninteractive.Basic maxsyncaccounts = 1 [Account Uni] localrepository = UniLocal remoterepository = UniRemote [Repository UniLocal] type = IMAP ssl = no remotehost = localhost remoteuser = myuser remotepass = mypasswd maxconnections = 2 [Repository UniRemote] type = Gmail # ssl =no ssl =yes #remotehost = ucimap.ucm.es remotehost = imap.gmail.com remoteuser = myuser remotepass = mypasswd # nametrans = lambda foldername: re.sub ('^\[gmail\]', 'bak', # re.sub ('sent_mail', 'sent', # re.sub ('starred', 'flagged', # re.sub (' ', '_', foldername.lower())))) folderfilter = lambda foldername: foldername in ['INBOX'] idlefolders = ['INBOX'] folderfilter = lambda foldername: foldername not in '[Gmail]/All Mail' sslcacertfile = /etc/ssl/certs/ca-certificates.crt maxconnections = 1 realdelete = yes # Don't sync shared folders # folderfilter = lambda foldername: not re.search('Shared Folders', foldername) # automatic stuff maxsyncaccounts = 1 quick = 10 autorefresh = 5 keepalive = 60 holdconnectionopen = yes # This will suppress anything but errors ui = quiet --8<------------------------schnapp------------------------->8--- --8<------------------------schnipp------------------------->8--- version_ignore=yes first_valid_uid = 1 log_path = /var/log/dovecot.log ssl_cert_file = /etc/ssl/certs/dovecot.pem ssl_key_file = /etc/ssl/private/dovecot.pem # mail_location = maildir:/var/spool/mail/%u # not sure about the following mail_location = maildir:/var/spool/mail/%u:INBOX=/var/spool/mail/%u maildir_copy_with_hardlinks = yes protocol imap { listen = 127.0.0.1:143 ssl_listen = 127.0.0.1:943 } auth default { mechanisms = plain # defines users/passwords passdb passwd-file { args = /etc/dovecot/passwd } userdb static { args = uid=mail gid=mail home=/var/spool/mail/%u } } --8<------------------------schnapp------------------------->8---

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Re: [Dovecot] Automatically Cleaning Kerberos Credential Cache Files
by Maura Dailey 11 Dec '12

11 Dec '12

On 12/10/2012 05:31 PM, Ben Morrow wrote: > At 3PM -0500 on 10/12/12 you (Maura Dailey) wrote: >> I'm in a situation here at work where I'm trying to support a mixed >> network of OS X and RHEL desktop machines with a Postfix/Dovecot >> combination. >> - user account information is stored in LDAP >> - user credentials are in MIT Kerberos >> - server is running RHEL 6/Dovecot 2.0.9/Postfix 2.6.6 >> >> I am currently using the PAM passdb module to authenticate my users (I >> began to have trouble with using GSSAPI directly). After I implemented >> it, a few weeks later, I noticed that some users were no longer getting >> their mail if they hadn't logged in during the past day. Postfix's mailq >> showed that hundreds of messages were backing up in the queue. I >> eventually tracked it down to leftover Kerberos credential cache files >> (/tmp/krb5cc_????) sitting in /tmp on the mail server. The presence of >> expired credential files was preventing Postfix from delivering mail to >> those users' mail spools. If I delete the credential files manually, >> Postfix immediately delivers the queued emails. > This is rather odd. Is krb5-authenticated NFS involved here, or does > Postfix's delivery make any other use of Kerberos? The only other thing > I can think of is that so many expired ccaches are accumulating that the > user goes over their inode quota. Each user has one credential cache file in /tmp on the mail server after logging into Dovecot. We aren't using randomized names, so everything is in the standard format /tmp/krb5cc_uid. We do use KRB5 authenticated (and encrypted) NFS, but we don't deliver mail to home directories. Since all users are "real" users, and our office size is small, everyone has a mail spool directory on the mail server. Postfix is configured to use Dovecot for Kerberos. The relevant lines in its /etc/postfix/main.cf are as follows: smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smtpd_sasl_auth_enable = yes smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject smtpd_sasl_security_options = noanonymous >> Currently, I have a cron job deleting the files manually every night. >> Obviously, this is a cruddy solution. > Well, I don't know about that: obviously, it would be a good idea to > work out what's going on here, in case it causes anything else to go > wrong, but a cronjob clearing out /tmp is a good idea in any case. Fair enough. And of course, I get a cache file every time I use sudo or log in through a GUI. Those aren't cleaned up either! Maybe I should be deleting credential cache files on all the machines every night. Those cache files have never given me a problem, though. >> I have Dovecot configured on a >> RHEL 6 box. The Pam stack on a RHEL 6 machine uses sssd (pam_sss.so) for >> authentication with Kerberos, not pam_krb5.so. I'm trying to track down >> which piece of the puzzle is responsible for cleaning up leftover >> credential caches. Is there a configuration option I can pass to >> Dovecot's passdb directly to clean up these cache files? > There are two relevant Dovecot settings: passing setcred=yes to the pam > passdb will make Dovecot call pam_setcred, and passing session=yes will > make it open and immediately close a PAM session. (Probably it ought to > wait until the IMAP user logs out to close the session, but currently it > can't do that because of the way the passdb lookups are done.) Changing > either of these may have an effect, depending on when exactly your PAM > module creates and destroys ccaches. I've tried session=yes by itself, but I don't think I've tried it with setcred=yes. I'll throw it in there and give it a try after I send this email. >> Do others >> generally have more success using a custom PAM stack with pam_krb5.so >> instead of pam_sss.so? > Well, I don't use RH (I use FreeBSD), but I use and would recommend Russ > Allbery's pam_krb5.so, which may or may not be the same as the normal > pam_krb5.so provided by your system. It has options to control whether > and where ccaches are created; assuming Dovecot doesn't need krb5 creds > (say, for NFS), you would probably be better off telling it not to > create a permanent ccache at all. > > http://www.eyrie.org/~eagle/software/pam-krb5/ I haven't had to configure pam_krb5.so directly before (we use the Red Hat/Fedora configured default, pam_sss.so, which claims to be a one stop shop for LDAP/Kerberos/NIS,etc.), but it does seem to have more options. We certainly don't need credential caches to stick around for email users. All the mail spools are stored on locally mounted storage on the mail server. >> Poring over sssd's configuration options didn't >> reveal anything useful. I'm still not sure why Postfix even cares if >> there are expired credential cache files in /tmp at all. >> >> I'm back to trying GSSAPI directly again as well in the meantime on a >> few test clients. When I used that in the past, users were getting >> issued duplicate Kerberos tickets and users were forced to log into the >> mail server directly using SSH after a day in order to get their mail to >> work (seemingly a related issue). If I get those same errors again, I'll >> start another thread. > This certainly does all sound related. What are the ccache files called: > are they just /tmp/krb5cc_UID or is there a random portion as well? Are > they being created with the correct permissions, and are there any > security policies (SELinux or ACLs of some kind) set up which might > interfere with their creation or destruction? No random portion (the only application we have configured with random ccache names is SSH), just the usual /tmp/krb5cc_uid. Permissions appear correct, they belong to the appropriate user and group accounts. The SELinux permissions are set to: system_u:object_r:user_tmp_t:s0. This is different from the machine's credential cache (system_u:object_r:gssd_tmp_t:s0), but I've disabled and re-enabled SELinux during different parts of my testing and didn't notice any errors. Using GSSAPI directly doesn't create any cached credential files on the server. However, I just verified that I'm still sporadically getting the duplicate tickets (two lines for imap/hostname.server.com(a)SERVER.COM, with identical expiration dates). It comes and goes. I have a few users testing it for me, and they'll let me know if their logins break tomorrow like they have in the past once the normal log in period elapses. Since the "fix" for that problem is to log into the mail server, I have a hard time testing for the problem myself (being logged into the mail server nearly continuously just now). > What happens if you log in as an ordinary user (preferably using the > same PAM stack as Dovecot uses), use klist to find the ccache name and > 'ls -i' to find its inode number, then manually kinit again? Does the > kinit succeed, and does the new ccache have a different inode number > from before? Does the ccache file get removed when you log out? I've noticed that the ccache files for regular users do not get deleted when they log out. On another user's workstation, I found a ccache file for my account from a week ago (my current session was using a randomly generated SSH ccache file). I ran a command with sudo to force it to reauthenticate with pam_sss, and the timestamp on the ccache file was updated and the inode changed. My best guess is that pam_sss.so just doesn't do ccache cleanup. > Ben > Thanks for taking a look, I appreciate all the suggestions. This problem's been driving me up a wall for weeks now. I only just managed to narrow down the cause in the last few days. If I can't get a fix working in Dovecot, I'll try tackling it from a different perspective. I understand why Dovecot might not be cleaning up credential files (especially if it's just calling PAM normally), but I definitely do not understand why Postfix is behaving the way it does. If I can just get GSSAPI to work, I could probably bypass the problem as well. - Maura Dailey maura(a)eclipse.ncsc.mil

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[Dovecot] Switch from MySQL/CourierMail to MySQL/Dovecot
by Robert Moskowitz 11 Dec '12

11 Dec '12

Hello, new here. I am a Centos/Fedora user, and for the past 3 years have been running my mail server using Postfix/MySQL/CourierMail/Squirrelmail on Fedora. The current incantation of the tutorial is at: http://www.howtoforge.com/virtual-users-and-domains-with-postfix-courier-my… Well it is time to rebuild my mailserver; this time on Centos 6.3. My goal is to use supplied rpms, not to build my own (and rebuild everytime there is an important update). So I am pulling quotas which has been a pain anyway, and I am investigating using Dovecot in place of CourierMail. In Centos 6.3, the version of Dovecot is: 2.0.9-2 I am looking for a tutorial to assist in the setup, as I am nowhere an expert on any of this (I am a communications security expert in the IETF and IEEE 802). There are a couple items that I have come to depend on in my current setup that are musts in anything new: Virtual user/domain That is, not only virtual domains, but also users defined by domain. So in the MySQL user table, the email value is set to user@domain. Thus a user can receive/send mail from multiple domains with the same addr and only those domains defined for the user in the user table. Obviously there is no coupling of Linux user accounts and email accounts. CourierMail is storing mail under /home/vmail/domain/user/... Encrypted passwords The passwords in the user table in MySQL are encrypted. This will be used to auth the user for POPing or IMAPing and sending their mail. I have encountered a few tutorials where it seems like passwords are stored in the clear? Anyway, not much else! Well as far as the user interface is concerned. Postfix with clamav and spamassassin and maybe one or two extras. And SquirrelMail for Webmail. A better gui than phpMyAdmin for maintaining the tables would be nice, but I don't have a lot of users, so it works well enough. Can someone point me to a tutorial best suited to my needs? Also any firewall rules, as I don't want to turn off iptables (and ip6tables) and any SELinux policy rules to add. Oh, and IPv6 will be a must in the near future, so anything needed to ensure IPv6 working right as well. Thanks

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[Dovecot] Automatically Cleaning Kerberos Credential Cache Files
by Maura Dailey 11 Dec '12

11 Dec '12

I'm in a situation here at work where I'm trying to support a mixed network of OS X and RHEL desktop machines with a Postfix/Dovecot combination. - user account information is stored in LDAP - user credentials are in MIT Kerberos - server is running RHEL 6/Dovecot 2.0.9/Postfix 2.6.6 I am currently using the PAM passdb module to authenticate my users (I began to have trouble with using GSSAPI directly). After I implemented it, a few weeks later, I noticed that some users were no longer getting their mail if they hadn't logged in during the past day. Postfix's mailq showed that hundreds of messages were backing up in the queue. I eventually tracked it down to leftover Kerberos credential cache files (/tmp/krb5cc_????) sitting in /tmp on the mail server. The presence of expired credential files was preventing Postfix from delivering mail to those users' mail spools. If I delete the credential files manually, Postfix immediately delivers the queued emails. Currently, I have a cron job deleting the files manually every night. Obviously, this is a cruddy solution. I have Dovecot configured on a RHEL 6 box. The Pam stack on a RHEL 6 machine uses sssd (pam_sss.so) for authentication with Kerberos, not pam_krb5.so. I'm trying to track down which piece of the puzzle is responsible for cleaning up leftover credential caches. Is there a configuration option I can pass to Dovecot's passdb directly to clean up these cache files? Do others generally have more success using a custom PAM stack with pam_krb5.so instead of pam_sss.so? Poring over sssd's configuration options didn't reveal anything useful. I'm still not sure why Postfix even cares if there are expired credential cache files in /tmp at all. I'm back to trying GSSAPI directly again as well in the meantime on a few test clients. When I used that in the past, users were getting issued duplicate Kerberos tickets and users were forced to log into the mail server directly using SSH after a day in order to get their mail to work (seemingly a related issue). If I get those same errors again, I'll start another thread. The output of doveconf -N: # 2.0.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-279.14.1.el6.x86_64 x86_64 Red Hat Enterprise Linux Server release 6.3 (Santiago) ext4 auth_cache_size = 10 k auth_cache_ttl = 5 hours auth_default_realm = server.com auth_gssapi_hostname = hostname.server.com auth_krb5_keytab = /etc/dovecot/dovecot.keytab auth_mechanisms = gssapi plain auth_realms = server.com auth_username_format = %n auth_verbose = no disable_plaintext_auth = yes listen = * mail_location = maildir:/var/spool/mail/%u mail_privileged_group = mail mbox_read_locks = fcntl mbox_write_locks = fcntl namespace { inbox = yes location = prefix = separator = / type = private } passdb { driver = pam } protocols = pop3 imap service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } } ssl = yes ssl_cert = </usr/share/ssl/private/mail.server.com.pem ssl_key = </usr/share/ssl/private/mail.server.com.pem userdb { driver = passwd } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_plugins = " listescape" } Thanks for any pointers, Maura Dailey maura(a)eclipse.ncsc.mil

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[Dovecot] dsync help?
by Torbjorn Astlind 10 Dec '12

10 Dec '12

Hi all, I have dovecot serving aprox 200 users through mbox, but the time has come to migrate to a new server, and to use Maildir. Using rsync from the old server I get all user data, i.e /home/*, and inboxes i.e /var/mail/* to a new server. This has worked well for some time as backup. The dsync should convert everything to Maildir, and it does... to an extent. (linebrakes for easy viewing) What I see, is that often, the /home/mail/xxx is NOT resulting in /home/xxx/Maildir/cur All mailboxes from /home/xxx, are properly converted to /home/xxx/Maildir/.name_of_ box Am I misunderstanding something? I get it to work sometimes if I delete the ~/Maildir completely before doing the dsync. All, and any help most welcome, Torbjörn for i in `cat /home2/torbjorn/SCRIPTS/userlist.txt`; do dsync -D -v -f -u $i -c /etc/dovecot/alt_config/10-mail.MBOX.conf backup maildir:~/Maildir; done > /home2/torbjorn/SCRIPTS/mb2mdRES.txt 2>&1 the -c 10.mail.MBOX.conf contains, the parts I think are relevant for the dsync operation: mail_location = mbox:~/home:INBOX=/home/mail/%u namespace { type = private separator = '/' inbox = yes } dsync(root): Debug: Effective uid=501, gid=501, home=/home/torbjorn dsync(root): Debug: Namespace : type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=mbox:~/home:INBOX=/home/mail/torbjorn dsync(root): Debug: fs: root=/home/torbjorn/home, index=, control=, inbox=/home/mail/torbjorn, alt= dsync(root): Debug: Effective uid=501, gid=501, home=/home/torbjorn dsync(root): Debug: Namespace : type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:~/Maildir dsync(root): Debug: maildir++: root=/home/torbjorn/Maildir, index=, control=, inbox=/home/torbjorn/Maildir, alt= dsync(root): Debug: Namespace : /home/torbjorn/Maildir doesn't exist yet, using default permissions dsync(root): Debug: Namespace : Using permissions from /home/torbjorn/Maildir: mode=0700 gid=-1 dsync(torbjorn): Debug: Namespace : Using permissions from /home/torbjorn/home: mode=0700 gid=-1

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[Dovecot] IMAP instead of Maildir on Ubuntu Precise
by Thufir 10 Dec '12

10 Dec '12

Why is dovecot using Maildir and not IMAP. Or is it using even using Maildir at all? Currently I'm using mailman, postfix and dovecot to manage a mailing list. Mail is sent to thufir(a)dur.bounceme.net which the "mail server delivery agent stack provided by Ubuntu server team" of dovecot-postfix handles fine, keeping it locally, so far as it goes. The mail ends up in /home/thufir/Maildir, which the balsa mail client reads fine, as it handles Maildir fine. However, I would like to use dovecot-imapd which is installed. However, it's not clear quite how to switch over to IMAP. I see: root@dur:~# root@dur:~# nl /usr/share/dovecot/protocols.d/imapd.protocol 1 protocols = $protocols imap root@dur:~# root@dur:~# grep protocol /etc/dovecot/dovecot.conf # Enable installed protocols !include_try /usr/share/dovecot/protocols.d/*.protocol root@dur:~# which indicates to me that IMAP is configured. So, why is mail showing up using Maildir? I'm looking at: "Once you have chosen, amend the following line in the file /etc/dovecot/dovecot.conf: protocols = pop3 pop3s imap imaps" https://help.ubuntu.com/community/Dovecot Admittedly, I've not looked too closely into Dovecot man pages as I don't want to get too deep into the weeds on that if it's not even Dovecot I need to configure. I'm assuming that it's dovecot which is using Maildir: root@dur:/etc/postfix# root@dur:/etc/postfix# grep dovecot main.cf smtpd_sasl_type = dovecot smtpd_sasl_path = private/dovecot-auth mailbox_command = /usr/lib/dovecot/deliver -c /etc/dovecot/conf.d/01-mail-stack-delivery.conf -m "${EXTENSION}" root@dur:/etc/postfix# Can I force dovecot to only ever use IMAP and never use anything else? Is it maybe postfix which is using Maildir, and this is why my mail shows up as Maildir type mail? thanks, Thufir thufir@dur:~$ thufir@dur:~$ head .balsa/config -n 20 [mailbox-Inbox] Path=/var/mail/thufir Type=LibBalsaMailboxMbox Name=Inbox [mailbox-Outbox] Path=/home/thufir/Maildir/outbox Type=LibBalsaMailboxMbox Name=Outbox [mailbox-Sentbox] Path=/home/thufir/Maildir/sentbox Type=LibBalsaMailboxMbox Name=Sentbox [mailbox-Draftbox] Path=/home/thufir/Maildir/draftbox Type=LibBalsaMailboxMbox Name=Draftbox thufir@dur:~$

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[Dovecot] Copying mailbox from one mailserver to another?
by Bjørn T Johansen 10 Dec '12

10 Dec '12

I see there is a tool called dsync that can do this but what are the cons of using dsync compared to just package the mailbox using tar and then untar the mailbox on the new server? Regards, BTJ -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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