- dovecot - dovecot.org

[Dovecot] Regarding Digest-MD5 auth
by kenja heramba 13 Jun '11

13 Jun '11

Hi, I am writing a Pop3Client. I use dovecot server as POP3 server in linux and hMailServer in windows. I was just testing digest-md5 auth with dovecot server. I had an observation. After server side verification, server sends a verification code to client. If this fails, how can client send the negative response or does it not exist? When I see packet capture, dovecot server sends +OK Logged in for anything client sends. I may be wrong. Please let me know your thoughts Regards, Heramba

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[Dovecot] sqlite quota dict
by Nikita Koshikov 13 Jun '11

13 Jun '11

Hello Timo, and list followers, Sqlite supports good feature like mysql 'ON DUPLICATE KEY UPDATE' - it calls REPLACE/INSERT OR REPLACE This clause can be added to INSERT query, like: INSERT OR REPLACE INTO table VALUES() REPLACE INTO table VALUES() // alias to previous one Also this can be done during CREATE TABLE syntax, like so: CREATE TABLE quota ( username text not null, bytes integer not null default 0, messages integer not null default 0, primary key (username) ON CONFLICT REPLACE ); So the examples will work: INSERT INTO quota (bytes,username) VALUES ('112497180','foo(a)spam.dom'); INSERT INTO quota (bytes,username) VALUES ('112497181','foo(a)spam.dom'); SELECT * FROM quota; foo(a)spam.dom|112497181|0 But 1 thing to note - if we updating not all fields and column has NOT NULL DEFAULT value, then DEFAULT value will alter current one: INSERT INTO quota (bytes,username) VALUES ('112497180','foo(a)spam.dom'); INSERT INTO quota (messages,username) VALUES ('1743','foo(a)spam.dom'); SELECT * FROM quota; foo(a)spam.dom|0|1743 This can be easily bypassed if INSERT will be: INSERT INTO quota (bytes,messages,username) VALUES ('112497180','1743','foo(a)spam.dom'); So if dovecot will INSERT values to sql dict in this manner, sqlite can be used for storing quota data.

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[Dovecot] virtual users with postfix+dovecot plugin usage question
by Denis Iskandarov 13 Jun '11

13 Jun '11

I'm interested in if i should enable plugins only in LDA as i understood that with postfix dovecot works only like LDA. For example i wanna use autocreate plugin for imap user i have enabled in both IMAP and LDA sections. Is it right or i had to configure it only in LDA section ? Than how quota and imap_quota work in imap section ? For what is it there if lda controls user maildirs ? Dovecot 2.0.13 protocol lda { mail_plugins = quota autocreate } protocol imap { imap_client_workarounds = delay-newmail mail_plugins = quota imap_quota autocreate } protocol pop3 { mail_plugins = quota pop3_client_workarounds = outlook-no-nuls oe-ns-eoh }

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[Dovecot] Question about Dovecot-ACLs
by Jan Phillip Greimann 13 Jun '11

13 Jun '11

Hi there, i try to create an php-script to control acl's for public folders without file-manipulation. For this i use imap_setacl() like this example: imap_setacl($mbox,"INBOX/test", "email(a)domain.tld", "lrwstipekxa"); The acl-file looks so: ~:> cat dovecot-acl user=email(a)domain.tld akxeilprwts But i have a problem with the follow function: imap_setacl($mbox,"INBOX/test", "email(a)domain.tld", ""); This command only delete the rights from the email, not the whole entry in my dovecot-acl file. Now my acl-file looks like this: ~:> cat dovecot-acl user=email(a)domain.tld Did this affect dovecot by any way? Thanks, Jan

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[Dovecot] dovecot auth server problem PAM handshake imap-login
by emc 13 Jun '11

13 Jun '11

Hi, i have a big problem with dovecot... PAM auth problem i guess, but don't know how to sort it out... Down the log and the dovecot.conf. Please soemone can tell me what's broken there? Thanks a lot ************************* HERE log ************************* Jun 9 14:49:46 vps dovecot: pop3-login: Can't connect to auth server at default: Resource temporarily unavailable Jun 9 14:49:46 vps dovecot: imap-login: Timeout waiting for handshake from auth server. my pid=14681, input bytes=0 Jun 9 14:49:46 vps dovecot: imap-login: Can't connect to auth server at default: Resource temporarily unavailable Jun 9 14:49:46 vps dovecot: imap-login: Timeout waiting for handshake from auth server. my pid=14681, input bytes=0 Jun 9 14:49:46 vps dovecot: imap-login: Timeout waiting for handshake from auth server. my pid=14682, input bytes=0 ************************* HERE my doveconf -a ************************* # 1.0.15: /etc/dovecot/dovecot.conf base_dir: /var/run/dovecot log_path: info_log_path: log_timestamp: %Y-%m-%d %H:%M:%S syslog_facility: mail protocols: imap pop3 imaps pop3s listen: ssl_listen: ssl_disable: no ssl_ca_file: ssl_cert_file: /etc/ssl/certs/dovecot.pem ssl_key_file: /etc/ssl/private/dovecot.pem ssl_key_password: ssl_parameters_regenerate: 168 ssl_cipher_list: ssl_verify_client_cert: no disable_plaintext_auth: no verbose_ssl: no shutdown_clients: yes nfs_check: yes version_ignore: 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_user: dovecot login_greeting: Dovecot ready. login_log_format_elements: user=<%u> method=%m rip=%r lip=%l %c login_log_format: %$: %s login_process_per_connection: yes login_chroot: yes login_greeting_capability: no login_process_size: 64 login_processes_count: 3 login_max_processes_count: 128 login_max_connections: 256 valid_chroot_dirs: mail_chroot: max_mail_processes: 1024 verbose_proctitle: no first_valid_uid: 500 last_valid_uid: 0 first_valid_gid: 1 last_valid_gid: 0 mail_extra_groups: mail_access_groups: mail_privileged_group: man default_mail_env: mail_location: mbox:~/mail/:INBOX=/var/mail/%u mail_cache_fields: flags mail_never_cache_fields: imap.envelope mail_cache_min_mail_count: 0 mailbox_idle_check_interval: 30 mail_debug: yes mail_full_filesystem_access: no mail_max_keyword_length: 50 mail_save_crlf: no mail_read_mmaped: no mmap_disable: no mmap_no_write: no dotlock_use_excl: no fsync_disable: no lock_method: fcntl maildir_stat_dirs: no maildir_copy_with_hardlinks: no maildir_copy_preserve_filename: no mbox_read_locks: fcntl mbox_write_locks: fcntl mbox_lock_timeout: 300 mbox_dotlock_change_timeout: 120 mbox_min_index_size: 0 mbox_dirty_syncs: yes mbox_very_dirty_syncs: no mbox_lazy_writes: yes dbox_rotate_size: 2048 dbox_rotate_min_size: 16 dbox_rotate_days: 1 umask: 63 mail_drop_priv_before_exec: no mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_process_size: 256 mail_plugins: 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 mail_log_prefix: %Us(%u): mail_log_max_lines_per_sec: 10 imap_max_line_length: 65536 imap_capability: imap_client_workarounds: outlook-idle pop3_no_flag_updates: no pop3_enable_last: no pop3_reuse_xuidl: no pop3_lock_session: no pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv pop3_client_workarounds: pop3_logout_format: top=%t/%p, retr=%r/%b, del=%d/%m, size=%s managesieve_max_line_length: 65536 managesieve_implementation_string: dovecot sieve_storage: sieve: auth default: mechanisms: plain login realms: default_realm: cache_size: 0 cache_ttl: 3600 executable: /usr/lib/dovecot/dovecot-auth user: root chroot: username_chars: abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ username_translation: username_format: master_user_separator: anonymous_username: anonymous krb5_keytab: gssapi_hostname: verbose: no debug: yes debug_passwords: no ssl_require_client_cert: no ssl_username_from_cert: no count: 1 worker_max_count: 30 process_size: 256 passdb: driver: pam args: session=yes dovecot deny: no pass: no master: no userdb: driver: passwd args: --------------------------

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[Dovecot] auth_cache question
by Robert Schetterer 13 Jun '11

13 Jun '11

Hi , just to make clear short question does auth_cache... help with downing sql lookups http://wiki2.dovecot.org/Authentication/Caching isnt clear to me for sql to me if yes are there real world recommanded settings lets say for a 5000 users server and where password changes should be noticed asap -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria

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[Dovecot] Dovecot 1.2 + Sieve-0.1.19 not working please help
by Denis Iskandarov 13 Jun '11

13 Jun '11

Hello i have installed dovecot from rpm found on rpm.pbone.net 1.2.17-0_115.el5 Everuthing works as charm Postfix + Dovecot + TLS + MySQL/postfixadmin For Reference: Centos 5.6 postfix 2.3.3-2.2 dovecot 1.2.17-0_115.el5 spamassassin 3.2.5-1.el5 postfixadmin 2.3.3 amavisd-new 2.6.4-4.el5.rf Now i'm trying to install Sieve for Dovecot 1.2 to make it redirect spam in proper folders but getting next error: ./configure --with-dovecot=/usr/lib/dovecot/ #OMITED OUTPUT# dovecot-config not found from /usr/lib/dovecot, use --with-dovecot=PATH to give path to compiled Dovecot sources or to a directory with the installed dovecot-config file. configure: error: dovecot-config not found /usr/lib/dovecot/ - is dir where all plugins and other things are stored. /etc is dir where dovecot.conf is located /etc/dovecot is dir where i put dovecot sql config Please help. I have no idea how to fix this. Especially when everything seems to be working as charm. My thread on LQ.org http://www.linuxquestions.org/questions/showthread.php?p=4381803&posted=1#p… dovecot -n # 1.2.17: /etc/dovecot.conf # OS: Linux 2.6.18-238.9.1.el5 i686 CentOS release 5.6 (Final) ext3 base_dir: /var/run/dovecot/ listen(default): *:143 listen(imap): *:143 listen(pop3): *:110 ssl_listen(default): *:993 ssl_listen(imap): *:993 ssl_listen(pop3): *:995 ssl_ca_file: /etc/pki/tls/cacert.pem ssl_cert_file: /etc/pki/tls/dev.cdn/cent56.dev.cdn.crt ssl_key_file: /etc/pki/tls/dev.cdn/cent56.dev.cdn.key ssl_cipher_list: ALL:!LOW:!SSLv2 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 first_valid_uid: 1001 last_valid_uid: 1001 first_valid_gid: 12 last_valid_gid: 12 mail_location: maildir:/var/vmail/%d/%u mail_debug: yes mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): quota mail_plugin_dir(default): /usr/lib/dovecot/imap mail_plugin_dir(imap): /usr/lib/dovecot/imap mail_plugin_dir(pop3): /usr/lib/dovecot/pop3 imap_client_workarounds(default): outlook-idle delay-newmail imap_client_workarounds(imap): outlook-idle delay-newmail imap_client_workarounds(pop3): pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh lda: postmaster_address: postmaster(a)dev.cdn mail_plugins: quota autocreate mail_plugin_dir: /usr/lib/dovecot/lda log_path: /var/log/dovecot/dovecot-deliver.log info_log_path: /var/log/dovecot/dovecot-deliver.log auth default: mechanisms: plain login user: nobody passdb: driver: pam passdb: driver: sql args: /etc/dovecot/sql.conf userdb: driver: passwd userdb: driver: sql args: /etc/dovecot/sql.conf userdb: driver: prefetch socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: mail master: path: /var/run/dovecot/auth-master mode: 432 user: vmail group: mail

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[Dovecot] Dovecot sieve redirect: failed to redirect message to user@domain.com
by Thiago Henrique 13 Jun '11

13 Jun '11

Hello, I'm running Dovecot 2.0.13 on my Ubuntu10.04. It's working very well but I faced a problem with Redirect and Vacation using Sieve. :-( In fact, after well configuring the system I dont't receive the redirect message, and in the log I found: ######################################################################################## Jun 9 18:49:37 box7 dovecot: lmtp(10734, user(a)server.com) Fatal: execv(/usr/sbin/sendmail) failed: Permission denied Jun 9 18:49:37 box7 dovecot: lmtp(10734, user(a)server.com) Error: Sendmail process terminated abnormally, exit status 84 Jun 9 18:49:37 box7 dovecot: lmtp(10734, user(a)server.com) Error: At35JIgC8U3uKQAAndgVeA: sieve: msgid=<20110609184850.0FAB8200A41C(a)domain.com>: failed to redirect message to <user-destination(a)server.com> (refer to server log for more information) ######################################################################################## In sieve.log I see: ######################################################################################## error: msgid=<2011060919.0200A375(a)domain.com>: failed to redirect message to <user(a)domain.com> (refer to server log for more information). ######################################################################################## Manually sendmail command works normally. Cron sends email normally. Any idea about the reason this happen and how to solve? Thanks in advance, Thiago Henrique

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[Dovecot] Loading Message Delays
by Ken Mandelberg 13 Jun '11

13 Jun '11

I sometimes see "loading message" or "opening Inbox" delays against both 1.X and 2.X Dovecot servers from thunderbird. Is there some way to pin down whats causing them?

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[Dovecot] mmap in GFS2 on rhel 6.1
by Aliet Santiesteban Sifontes 13 Jun '11

13 Jun '11

Hello list, we continue our tests using Dovecot on a RHEL 6.1 Cluster Backend with GFS2, also we are using dovecot as a Director for user node persistence, everything was ok until we started stress testing the solution with imaptest, we had many deadlocks, cluster filesystems corruptions and hangs, specially in index filesystem, we have configured the backend as if they were on a NFS like setup but this seems not to work at least on GFS2 on rhel 6.1. We have a two node cluster sharing two GFS2 filesystem - Index GFS2 filesystem to store users indexes - Mailbox data on a GFS2 filesystem The specific configs for NFS or cluster filesystem we used: mmap_disable = yes mail_fsync = always mail_nfs_storage = yes mail_nfs_index = yes fsync_disable=no lock_method = fcntl mail location : mail_location = mdbox:/var/vmail/%d/%3n/%n/mdbox:INDEX=/var/indexes/%d/%3n/%n But this seems not to work for GFS2 even doing user node persistence, maillog is plagged of errors and GFS2 hangs on stress testing with imaptest, many corrupted index for example, transaction logs etc, at this point we have many questions, first mmap... In Redhat GFS2 docs we read: Gold rules for performance: An inode is used in a read only fashion across all nodes An inode is written or modified from a single node only. We have succesfull archived this using dovecot director Now, for mmap rh says: ... If you mmap() a file on GFS2 with a read/write mapping, but only read from it, this only counts as a read. On GFS though, it counts as a write, so GFS2 is much more scalable with mmap() I/O... But in our config we are using mmap_disable=yes, do we have to use mmap_disable=no with GFS2??? Also, how dovecot manage the cache flush on GFS2 filesystem??? Why, if we are doing user node persistence, dovecot indexes gets corrupted??? What lock method do we have to use?? How fsync should be used?? We know we have many questions, but this is really a very complex stuff and we are going to appreciate any help you can give us. Thank you all for a great work, specially Timo... best regards

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