April 2010 - dovecot - dovecot.org

[Dovecot] adding users to passwd-file
by Phil Howard 06 May '10

06 May '10

Is there a tool equivalent to the system "passwd" command (or maybe "adduser" or "useradd") that can support a passwd-file by setting a password, encrypting it with the salted MD5 scheme? The system "passwd" command doesn't have an option to "do it to this alternate file instead of /etc/shadow".

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[Dovecot] Expire plugin
by Thomas M Goerger 05 May '10

05 May '10

Hi, I'm testing out the dovecot expire plugin, and not seeing anything go into the database I've got set up. It's a mysql db. I've gone in and verified that the db is set up correctly. The socket is set up so that deliver should be able to talk to the db, but I'm not seeing anything in the expires table when I look. Is there anywhere that expire can log to so I can see what might be happening? It doesn't look like it logs to the dovecot log. Thanks! ************************************************************************* * Tom Goerger - Email/Unix System Administrator * * * * University of Minnesota Email: tmg(a)umn.edu * * Operations, Infrastructure and Architecture Phone: 4-5804 * * Internet Services Office: 626J WBOB * * * *************************************************************************

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[Dovecot] CDB Authentication database
by Luca Corti 04 May '10

04 May '10

Hello, I'd be interested in seeing a CDB based backend for the userdb/passdb lookups. Is anyone working on this? Is there any documentation (other than the wiki Design section and the code itself) on implementing database backends? thanks Luca

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[Dovecot] dovecot user
by Timo Sirainen 04 May '10

04 May '10

Any thoughts on this: The primary use for "dovecot" user has been for login processes. But people keep misunderstanding this and try to use dovecot for accessing mails. For years I've been wondering about renaming this user to something else like dovelogin, but it never really seemed practical. So now with v2.0 there are a bunch of new processes, and for example anvil and dict are now run as dovecot user by default. But it's not really good that login processes can just go and kill those processes. And even worse, if drop_priv_before_exec=yes they could ptrace these processes. So I think we need two Dovecot users for v2.0: 1. Completely untrusted user for login processes. 2. Slightly more trusted internal Dovecot user. So "dovecot" could be reused for 2. And it would no longer be a mortal sin to use dovecot user for owning mail files. For 1. there would be a new user. I'd use "dovelogin", but apparently tools still don't much like usernames that are longer than 8 characters. Like ps could show numeric uid instead of 9 character long username. So .. any suggestions? "dovlogin" could be one possibility I guess. It would be nice if the name somehow reminded of login processes, but maybe something else could be used too, like: dovenil, dovenull, dovezero, dovenone, dovevoid, doveint, dovedown, dovein, dove0

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[Dovecot] zlib Plugin Dovecot 2.0 - ostream
by Alex Baule 03 May '10

03 May '10

Hello Everyone... In zlib save mail have it: struct ostream *output; There is a way to get the file descriptor from output used in ostream zlib plugin ? to get in istream is i_stream_get_fd, but don't have o_stream_get_fd......

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[Dovecot] [SUGGESTION] Managesieve: Transparent home dir creation
by Felix Leimbach 03 May '10

03 May '10

Hi all, I'm using dovecot 2.0-beta4's sieve plugin and it works great but here is an idea for improvement: When creating the first sieve script for an account whose home dir does not yet exist then dovecot *does* create that homedir but the sieve client times out. Tried Thunderbird's sieve addon as well as horde's ingo. The log says: dovecot: managesieve-login: Login: user=<me(a)example.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured dovecot: managesieve(me(a)example.com): sieve-storage: sieve_storage_verify_dir(/mnt/data/vmail/dovecot-homedirs/example.com/me//s… failed: File exists dovecot: managesieve(me(a)example.com): Fatal: Failed to open Sieve storage. Because the homedir was created (great!) when I retry the same action then all works perfectly well. So why not make that homedir creation transparent so that the clients' first try succeeds instead of the second try? Cheers, Felix

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[Dovecot] What causes dovecot to rebuild dovecot-uidlist?
by Pat 02 May '10

02 May '10

Hello, In what situations will Dovecot 1.2.11 rebuild its uidlist? I am using the maildir storage format, and I am also modifying the uidlist manually (so it's possible I could jack* things up). I have found some related code in maildir-uidlist.c: maildir_uidlist_next. 1) Blank filename or UID 0 2) Any UID not being greater than the proceeding UID 3) Any UID being greater than ~4 billion. 4) Any UID being greater than the suggested next uid. 6) If a filename contains a / 7) General header line sanity checking. Are there any other sections of the code that do sanity checks on dovecot-uidlist (for Maildir type storage)? And optionally do you agree that maildir_uidlist_set_corrupted is the best place to watch to see if I have mangled the uidlist? Thanks in advance, Pat * I insert into dovecot-uidlist manually when I deliver new messages, or discover a message that is not in uidlist for some reason. For compatability reasons I maintain a completely separate cache. If there is a better way to keep the uidlist up to date when the user isn't necessarily accessing the account via dovecot imap, I'm open to suggestions. However my situation is fairly unique I think.

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[Dovecot] zlib Plugin Dovecot 2.0 - ostream
by Alex Baule 30 Apr '10

30 Apr '10

Hello Everyone. There is possible to rename the email saved by a plugin, like zlib ? i explain.... i need to add 1 line in email header, because of that, i want to rewrite the filename to update the S and W flag. Tks !

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[Dovecot] 1.0.15 --> 1.2.11 --> got too little data
by Andre Hübner 30 Apr '10

30 Apr '10

Hello, did updates from 1.0.15 to 1.2.11 and is in most cases succesful. Sometimes dovecot leaves errormessage in Log: IMAP(username): FETCH [HEADER] for mailbox INBOX UID 5106 got too little data (copying): 516 vs 528 Until now only Inbox was effected and no other folders. I delete cachesfiles in ~mail/.imap to solve this but is there a way to do this automatical (self healing)? Dovecot could recreate complete caches if there was a difference in calculation. Thanks, Andre

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[Dovecot] convert old configuration file with doveconf : Unknown setting
by de Lafond Guillaume 30 Apr '10

30 Apr '10

Hi, It happens when I try to convert this config (with the dovecot 2.0 beta4 release) : test-mail:/tmp# dovecot -n -c ./dovecot.old.conf # 1.2.11: ./dovecot.old.conf # OS: Linux 2.6.26-2-686-bigmem i686 Debian 5.0.4 log_path: /var/log/dovecot.log info_log_path: /var/log/dovecot_info.log protocols: imap listen: 127.0.0.1:30143 disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable: /usr/lib/dovecot/imap-login login_user: aquaray login_greeting: Mail - test v2 login_process_per_connection: no login_process_size: 96 login_processes_count: 20 login_max_processes_count: 196 max_mail_processes: 10024 mail_max_userip_connections: 10000 verbose_proctitle: yes first_valid_uid: 89 mail_location: maildir:~/:INDEX=/var/mail/dovecot_indexes/%1d/%d/%n fsync_disable: yes maildir_very_dirty_syncs: yes mbox_write_locks: fcntl dotlock mail_drop_priv_before_exec: yes mail_plugins: quota imap_quota imap_client_workarounds: outlook-idle delay-newmail namespace: type: private separator: / inbox: yes list: yes subscriptions: yes namespace: type: private separator: / prefix: INBOX/ hidden: yes list: no subscriptions: yes lda: postmaster_address: postmaster(a)test-dovecotv2.aquaray.com hostname: test-dovecotv2.aquaray.com log_path: /var/log/dovecot-deliver.log info_log_path: /var/log/dovecot-deliver.log auth_socket_path: /var/run/dovecot-socket-auth/auth-master auth default-auth-master: mechanisms: plain login apop cram-md5 master_user_separator: * passdb: driver: sql args: /etc/dovecot/dovecot-sql.conf userdb: driver: sql args: /etc/dovecot/dovecot-sql.conf socket: type: listen master: path: /var/run/dovecot-socket-auth/auth-master mode: 384 user: aquaray auth default: mechanisms: plain login apop cram-md5 cache_size: 2048 cache_ttl: 2000 master_user_separator: * count: 10 passdb: driver: sql args: /etc/dovecot/dovecot-sql-master.conf pass: yes master: yes passdb: driver: sql args: /etc/dovecot/dovecot-sql.conf userdb: driver: sql args: /etc/dovecot/dovecot-sql.conf plugin: quota: maildir:User quota test-mail:/tmp# /usr/local/dovecot2/bin/doveconf -n -c ./ dovecot.old.conf # 2.0.beta4 (6891d20929ca): ./dovecot.old.conf doveconf: Warning: Obsolete setting in ./dovecot.old.conf:26: login_dir has been removed doveconf: Warning: Obsolete setting in ./dovecot.old.conf:29: login_chroot has been replaced by service { chroot } doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 29: Unknown setting: chroot doveconf: Warning: Obsolete setting in ./dovecot.old.conf:32: login_user has been replaced by service { user } doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 32: Unknown setting: user doveconf: Warning: Obsolete setting in ./dovecot.old.conf:36: login_process_size has been replaced by service { vsz_limit } doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 36: Unknown setting: vsz_limit doveconf: Warning: Obsolete setting in ./dovecot.old.conf:39: login_process_per_connection has been replaced by service { service_count } doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 39: Unknown setting: service_count doveconf: Warning: Obsolete setting in ./dovecot.old.conf:42: login_processes_count has been replaced by service { process_min_avail } doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 42: Unknown setting: process_min_avail doveconf: Warning: Obsolete setting in ./dovecot.old.conf:45: login_max_processes_count has been replaced by service { process_limit } doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 45: Unknown setting: process_limit doveconf: Warning: Obsolete setting in ./dovecot.old.conf:48: login_max_connections has been replaced by service { client_limit } doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 48: Unknown setting: client_limit doveconf: Warning: Obsolete setting in ./dovecot.old.conf:75: mail_drop_priv_before_exec has been replaced by service { drop_priv_before_exec } doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 75: Unknown setting: drop_priv_before_exec doveconf: Warning: Obsolete setting in ./dovecot.old.conf:88: max_mail_processes has been replaced by service { process_limit } doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 88: Unknown setting: process_limit doveconf: Warning: Obsolete setting in ./dovecot.old.conf:91: mail_process_size has been replaced by service { vsz_limit } doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 91: Unknown setting: vsz_limit It does not understand the old 1.1 setting "ssl_disable". test-mail:/tmp# /usr/local/dovecot2/bin/doveconf -n -c ./ dovecot.old.conf # 2.0.beta4 (6891d20929ca): ./dovecot.old.conf doveconf: Fatal: Error in configuration file ./dovecot.old.conf line 21: Unknown setting: ssl_disable ----------------------------------------------------------- After removing all fatal error (comment all settings that are not understood), it works. If needed, I could test against the another other version (latest hg ?). Regards, -- Guillaume de Lafond Aqua Ray SARL

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