- dovecot - dovecot.org

[Dovecot] Dovecot indexes
by Mike Prispan 11 Jul '11

11 Jul '11

Hi, could someone answer my following questions about dovecot indexes? - If I delete dovecot indexes, it recreates them without any problem, right? - If dovecot recreates indexes, it does not affect users (they don't have to download all emails again, seen flag is not lost etc.) or is there any problem? - If I use mail_location = ...:INDEX=MEMORY, it recreates indexes every time dovecot is (re)started, right? Does it have any negative effect except performance/resources? - Is there any difference in indexes for mbox and maildir (related to previous questions)? Thanks Mike

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[Dovecot] compressed folder bug
by Giulio Casella 11 Jul '11

11 Jul '11

I found a strange behaviour in dovecot compressed folder, maybe a bug. It happens only if you have one (and just one!) email in a gz compressed folder. I'm talking about a mbox server. Step to reproduce: - create a new folder, using any client (I think this step is not important, it happens also if tou create this folder server-side). - copy one message (any message) into newly created folder (using your favourite drag-n-drop gesture, saving in that folder using you character client (mutt,...), etc.) - if your client automatically subscribe to newly created folders, unsubscribe from it - On your server "gzip newfolder" - On your client subscribe "newfolder.gz" - Try to access you newfolder This is what I get in logfiles: Jul 11 14:08:08 myhostname dovecot: imap(giulio): Error: Next message unexpectedly lost from mbox file /home/giulio/Mail/testfolder.gz at 9082 (cached) Jul 11 14:08:08 myhostname dovecot: imap(giulio): Error: read(/home/giulio/Mail/testfolder.gz) failed: Invalid argument (uid=1) Jul 11 14:08:08 myhostname dovecot: imap(giulio): Disconnected: Internal error occurred. Refer to server log for more information. [2011-07-11 14:08:08] bytes=2045/23657 The funniest thing is that if I have a folder with more than one message it works like a charm. Some info about me: - dovecot version 2.0.13 - gentoo linux, with kernel 2.6.38-gentoo-r6 - system running on a VMWare virtual machine (32bit) - reiserfs filesystem my dovecot -n output: ------------------------------------------------------------------------ # 2.0.13: /etc/dovecot/dovecot.conf # OS: Linux 2.6.38-gentoo-r6 i686 Gentoo Base System release 2.0.2 auth_mechanisms = plain login disable_plaintext_auth = no listen = * mail_gid = mail mail_location = mbox:~/Mail:INBOX=/var/mail/%u:INDEX=~/ mail_privileged_group = mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date passdb { args = * driver = pam } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } service imap-login { inet_listener imap { address = imap.mydomain.it } inet_listener imaps { address = imap.mydomain.it } } service pop3-login { inet_listener pop3 { address = pop.mydomain.it } inet_listener pop3s { address = pop.mydomain.it } } ssl_cert = </etc/ssl/dovecot/server.pem ssl_key = </etc/ssl/dovecot/server.key syslog_facility = local6 userdb { driver = passwd } protocol lda { mail_plugins = sieve } protocol imap { mail_plugins = " zlib" plugin { zlib_save = gz zlib_save_level = 6 } } local imap.dsi.unimi.it { disable_plaintext_auth = no } local pop.dsi.unimi.it { disable_plaintext_auth = no } local imap.dsi.unimi.it { protocol imap { ssl_cert = </etc/pki/CA/certs/imap.mydomain.it.pem ssl_key = </etc/pki/CA/certs/imap.mydomain.it.key } } local pop.dsi.unimi.it { protocol pop3 { pop3_uidl_format = %08Xv%08Xu ssl_cert = </etc/pki/CA/certs/pop.mydomain.it.pem ssl_key = </etc/pki/CA/certs/pop.mydomain.it.key } } ------------------------------------------------------------------------ Any ideas? TIA, gc -- Giulio Casella giulio at dsi.unimi.it System and network manager Computer Science Dept. - University of Milano

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[Dovecot] Lots of LMTP errors Remote server not answering (DATA output timeout) (in reply to end of DATA command))
by Angel L. Mateo 11 Jul '11

11 Jul '11

Hello, I have configured two dovecot servers with director acting as lmtp/imap/pop proxy server with 8 dovecot backend servers. In our test environment we had no problem, but when we migrated to production environment, our mail list server (it delivers mail through lmtp) is having a lot of errors like this: 451 4.4.0 Remote server not answering (DATA output timeout) (in reply to end of DATA command)) Proxy and backend servers are not loaded. Any idea? -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información _o) y las Comunicaciones Aplicadas (ATICA) / \\ http://www.um.es/atica _(___V Tfo: 868887590 Fax: 868888337

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[Dovecot] dsync and compressed folders
by Giulio Casella 11 Jul '11

11 Jul '11

I'm trying to migrate my old dovecot server (mbox based) to a new one (maildir based), both are version 2.0.13. I'm using dsync: oldserver# dsync -u username backup ssh root@newserver dsync -u username Everything is working like a charm but when it tries to convert compressed folder I got an error: dsync-local(username): Error: Failed to sync mailbox OldMails/2008.gz: Mailbox isn't a valid mbox file. Both old and new installations support compressed folder via zlib plugin. If I'm not wrong dsync doesn't support compressed folder, does it? And, if so, are there any chances to have dsync support gzip'ed folders in the (near) future? Many thanks in advance, gc -- Giulio Casella giulio at dsi.unimi.it System and network manager Computer Science Dept. - University of Milano

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[Dovecot] n00b here -- pop email deletion
by Glenn English 11 Jul '11

11 Jul '11

I'm running Dovecot IMAP and POP3 on Debian. But it look's like it's keeping mail in the user's inbox on the server until it's deleted by the user. I thought POP servers deleted email as soon as it was downloaded, but apparently not, according to dovecot.org. Is there something in the Dovecot conf I can do to get rid of all this redundant crud? I see several conversations on the 'Net about "quotas" that look like they might keep stuff around for a few days or weeks, then delete. That sounds lovely, but I don't understand them enough to try to make it happen. dovecot -n: > # 1.0.15: /etc/dovecot/dovecot.conf > log_timestamp: %Y-%m-%d %H:%M:%S > protocols: imap pop3 > ssl_listen: * > ssl_disable: yes > disable_plaintext_auth: no > login_dir: /var/run/dovecot/login > login_executable(default): /usr/lib/dovecot/imap-login > login_executable(imap): /usr/lib/dovecot/imap-login > login_executable(pop3): /usr/lib/dovecot/pop3-login > login_max_processes_count: 12 > mail_privileged_group: mail > mail_executable(default): /usr/lib/dovecot/imap > mail_executable(imap): /usr/lib/dovecot/imap > mail_executable(pop3): /usr/lib/dovecot/pop3 > mail_plugin_dir(default): /usr/lib/dovecot/modules/imap > mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap > mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 > pop3_uidl_format(default): > pop3_uidl_format(imap): > pop3_uidl_format(pop3): %08Xu%08Xv > auth default: > mechanisms: plain login > passdb: > driver: pam > userdb: > driver: passwd > socket: > type: listen > client: > path: /var/spool/postfix/private/auth > mode: 432 > user: postfix > group: postfix -- Glenn English

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[Dovecot] LDA/Sieve and vacation: empty envelope sender
by Roberto Puzzanghera 10 Jul '11

10 Jul '11

Hello everyone, while testing a vacation/reject sieve rule I get: lda(sender(a)mydomain.xyz): Error: sieve: envelope sender address '<>@mail.domain.xyz' is unparsable follows an empty Return-Path: <"<>"@mail.domain.xyz> and the reject of the message itself by the recipient's MTA (syntax error). Unfortunately I had no luck when googling for similar issues, after a couple of hours of debugging. qmail/vpopmail dovecot 2.0.12 pigeonhole-0.2.3 Thanks in advance for any hint Roberto Puzzanghera

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[Dovecot] OATH/OTP?
by Cor Bosman 10 Jul '11

10 Jul '11

Hey all, has anyone ever successfully implemented some form of OTP system with dovecot? Im looking at setting up an OATH/HOTP-TOTP based OTP for our services, but the webmail service (which uses dovecot) is a difficult one. Any info on implementations would be appreciated, Regards, Cor

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[Dovecot] SASL
by Friedrich Locke 09 Jul '11

09 Jul '11

Dear list members, i am looking for a pop3 server and would like to know dovecot pop3 closer. In my current infra structure all my users have a single login and one password. I have been authenticating unix, web, ldap, smtp against saslauthd server. It is possible to have dovecot pop3 authenticate by contacting saslauthd too ? Another question: All my user information are keeped inside LDAP using qmail.schema. Can dovecot pop3 look into ldap an return information about user mail directory, etc .... ? Thanks in advance.

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[Dovecot] IMAP not working remotely
by Ondřej Bouda 09 Jul '11

09 Jul '11

Hello, I am trying to set up Dovecot 2.0.9 on Fedora 14. The problem I would like to ask for resolution is that IMAP is not working when connecting to the server from another network. More precisely: - POP3 is working entirely OK, - IMAP is working OK when clients are connecting using local network addresses, like 192.168.0.100, - when a client connects from outside, thus using remote IP address, or even from the server itself using the remote IP address of the server, the following happens: the client correctly connects, but the server sends no greeting (neither the configured login_greeting nor the server IMAP capabilities) and does not respond to the commands. In the server log, I get the following record a while after trying to connect (and actually trying to login): Jul 08 23:24:16 imap-login: Info: Disconnected: Inactivity (no auth attempts): rip=<remote-server-address>, lip=192.168.0.100 Both routing and firewall are OK. The client really connects to dovecot (hence the log message), as seen from a telnet session: Trying a.b.c.d... Connected to example.tld (a.b.c.d). Escape character is '^]'. (and then nothing else) The most confusing for me is the fact that POP3 is configured quite the same and works fine, as well as IMAP on the local network. I tried to change address in the inet_listener imap configuration, but if a wrong address setting was the cause, the client would not get connected at all. As I have spent a pretty long time unsuccessfully searching for a cause, I am asking for some help. Thanks for your time, Ondrej Bouda dovecot -n output follows: # 2.0.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.35.11-83.fc14.x86_64 x86_64 Fedora release 14 (Laughlin) ext4 auth_mechanisms = plain login cram-md5 digest-md5 ntlm disable_plaintext_auth = no first_valid_gid = 502 first_valid_uid = 502 last_valid_gid = 502 last_valid_uid = 502 log_path = /var/log/dovecot login_greeting = Welcome mail_location = maildir:/var/mail/virtual/%d/%n passdb { args = scheme=plain username_format=%u /etc/dovecot/passwd driver = passwd-file } protocols = imap pop3 service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } user = dovecot-auth } service imap-login { inet_listener imap { address = * port = 143 } } service pop3-login { inet_listener pop3 { address = * port = 110 } } ssl = no userdb { args = username_format=%u /etc/dovecot/passwd driver = passwd-file } protocol pop3 { pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv }

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[Dovecot] auth_username_chars question
by Linda Walsh 09 Jul '11

09 Jul '11

I notice there is a space after the = in the default setting: #auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ Is that space part of the syntax or required? If not, does that mean 'space' is included in the default list of allowed characters? If not, then is the space after the '=' required? -- If not, the implication would seem to be that space is 'ignored'. If that's the case, how does one include 'space' in the list of allowed characters? Also, how does one include the "\" character in the list of allowed characters? I.e. is anything accepted, literally, after the first non-space char after the '=' sign? I.e. any spaces after the first non-space char would be taken as valid character, and '\' would also be a literal character? (not that'd I'd be using windows's clients or anything that would, on occasion, pass "DOMAINAME\user" as the calling user trying to log into a 'user' account....or anything....*ahem*...) Overrode it w/some hard-coded hacks, but would like dovecot to me more robust and handle weird input and do the right thing with it (I know that's always a challenging concept for some people, since the answers and ability to arrive at 'correct' is always 'contextual', and so many people want absolute rules that apply all the time in all cases, but...I think thats a diagnosable psychological condition ;-) ).

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