- dovecot - dovecot.org

[Dovecot] Concurrent POP3 Sessions Issues
by Mauricio López Riffo 29 Jan '09

29 Jan '09

Hi, I have problems with dovecot + ldap + nfs, we could't have more than 20 concurrent sessions of pop3, when user 21 comes, the auth process takes more than 1 sec and is incresing (while most users arrives, more delay in autenticacion exists) and my customers complaint about the service. We need support about 200 concurrents pop3 users, here is my details Front Internet 1 Load Balancer configured with 2 servers reals App Servers 2 Servers Xeon 3.0Ghz, 4G Ram, rhel4 update 7 Dovecot 1.1.8 (i386 rpm complied by source rpm from fedora core 10) Ldap Server 2 Server Xeon QuadCore 2.5Ghz, 8G Ram, rhel5 update 2 Openldap 2.0.X (x86_64 rpms compiled by source rpm from rhel3) Nfs Server 1 Server Xeon 3.0Ghz, 4G Ram, rhel3 update 4 My conf: # 1.1.8: dovecot.conf # OS: Linux 2.6.9-78.0.13.ELsmp i686 Red Hat Enterprise Linux ES release 4 (Nahant Update 7) protocols: imap pop3 listen(default): app-server:143 listen(imap): app-server:143 listen(pop3): app-server:110 ssl_disable: yes login_dir: /var/run/dovecot/login-mail login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login login_greeting: Welcome POP3/IMAP Server New on app1. login_process_per_connection: no login_process_size: 256 login_processes_count: 50 mail_max_userip_connections(default): 50 mail_max_userip_connections(imap): 50 mail_max_userip_connections(pop3): 10 verbose_proctitle: yes first_valid_uid: 8 mail_uid: 8 mail_gid: 12 mail_location: maildir:%h/Maildir:INDEX=/var/cache/dovecot/indexes/%2d/%1u/%2u/%u mail_debug: yes mail_full_filesystem_access: yes mmap_disable: yes mail_nfs_storage: 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_log mail_plugin_dir(default): /usr/lib/dovecot/imap mail_plugin_dir(imap): /usr/lib/dovecot/imap mail_plugin_dir(pop3): /usr/lib/dovecot/pop3 pop3_uidl_format(default): %08Xu%08Xv pop3_uidl_format(imap): %08Xu%08Xv pop3_uidl_format(pop3): UID%u-%v pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls auth default: realms: domain.cl default_realm: domain.cl verbose: yes debug: yes debug_passwords: yes count: 32 worker_max_count: 16 passdb: driver: ldap args: /etc/dovecot/dovecot-ldap-new.conf userdb: driver: ldap args: /etc/dovecot/dovecot-ldap-new.conf plugin: quota: maildir mail_log_events: delete undelete expunge copy mailbox_delete mail_log_fields: uid box msgid size # dovecot-ldap-new.conf hosts = 10.1.2.3 10.1.2.4 dn = cn=Usr,o=USERS,c=CL dnpass = pass sasl_bind = no tls = no auth_bind = yes ldap_version = 3 base = dc=%d,o=MAIL,o=USERS,c=CL scope = subtree user_attrs = mailMessageStore=mail:INDEX=/var/cache/dovecot/indexes/%2d/%1u/%2u/%u,homeDi rectory=home,,,uidNumber=uid,gidNumber=gid,mailQuota=quota:storage user_filter = (&(objectClass=posixAccount)(uid=%n)) pass_attrs = mail=user,userPassword=password pass_filter = (&(objectClass=posixAccount)(uid=%n)) default_pass_scheme = CRYPT Regards ---- Mauricio López Riffo Red Hat Certified Engineer 804006455319519 Netline Telecomunicaciones Chile Los Conquistadores 2430, Providencia, Santiago. Codigo Postal: 7530041 Fono: +562 6560600 Móvil: +569 90992366

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Re: [Dovecot] Problem with dovecot config
by Thomas M Goerger 29 Jan '09

29 Jan '09

Hi, I'd like to do option A, but I'm not certain as to what steps to take to do so. Could you let me know where the code for this function is located, and what might need to be done to link it? I'm not terribly familiar with the linker, so I'm having a bit of trouble figuring out what exactly needs to be done for the rebuild. 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 * * * ************************************************************************* On Sun, 25 Jan 2009, Timo Sirainen wrote: > On Fri, 2009-01-23 at 12:48 -0600, Thomas M Goerger wrote: > > Jan 23 12:46:57 mars.tc.umn.edu imap(dump-capability): : [ID 817342 > > mail.error] dlopen(/opt/dovecot1.8/lib/dovecot/imap/lib01_acl_plugin.so) > > failed: ld.so.1: imap: fatal: relocation error: file > > /opt/dovecot1.8/lib/dovecot/imap/lib01_acl_plugin.so: symbol i_strcmp_p: > > referenced symbol not found > > Your linker was trying to be smart and didn't include i_strcmp_p() > function in imap binary, because it wasn't used anywhere in the imap > binary itself. ACL plugin needs it, but since linker dropped it it's no > longer there. The possibilities for how to fix this would be: > > a) Modify linker flags so that it doesn't drop all these unused > functions. > > b) Move the i_strcmp_p() code to ACL plugin. > > c) Use i_strcmp_p() somewhere in IMAP code. > > d) Make liblib.a a shared library instead so that the linker won't try > to drop useful stuff. > > I think for now you should go with a), b) or c). The long term solution > will be d), but I wasn't really planning on doing it soon.. Hmm. Maybe > for v1.3. >

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[Dovecot] Dovecot and smartsieve
by Claudio Prono 29 Jan '09

29 Jan '09

Hi all, I am testing smartsieve with the patch found into the dovecot wiki (http://nopaste.biz/63514) but, i have some problems. All works fine, but incredibly slow..and i don't know why. The only error i get is into the error log of apache: [Fri Jan 30 17:18:57 2009] [error] [client xxx.xxx.xxx.xxx] PHP Notice: Undefined variable: line in /srv/www/htdocs/smartsieve/lib/Managesieve.php on line 237, referer: http://192.168.87.243/smartsieve/rule.php My configuration is: # 1.1.7: /etc/dovecot/dovecot.conf # OS: Linux 2.6.25.20-0.1-pae i686 openSUSE 11.0 (i586) ext3 log_path: /var/log/dovecot-err.log info_log_path: /var/log/dovecot-inf.log protocols: imap imaps pop3 pop3s managesieve listen: 127.0.0.1 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_executable(managesieve): /usr/lib/dovecot/managesieve-login first_valid_uid: 51 last_valid_uid: 51 first_valid_gid: 51 last_valid_gid: 51 mail_location: maildir:/var/mail/virtual/%d/%u mail_debug: yes mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_executable(managesieve): /usr/lib/dovecot/managesieve mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): quota mail_plugins(managesieve): 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_plugin_dir(managesieve): /usr/lib/dovecot/modules/managesieve imap_client_workarounds(default): outlook-idle imap_client_workarounds(imap): outlook-idle imap_client_workarounds(pop3): imap_client_workarounds(managesieve): pop3_uidl_format(default): %08Xu%08Xv pop3_uidl_format(imap): %08Xu%08Xv pop3_uidl_format(pop3): %Mf pop3_uidl_format(managesieve): %08Xu%08Xv sieve_storage(default): sieve_storage(imap): sieve_storage(pop3): sieve_storage(managesieve): /var/mail/virtual/%d/%u/sieve sieve(default): sieve(imap): sieve(pop3): sieve(managesieve): /var/mail/virtual/%d/%u/.dovecot.sieve auth default: passdb: driver: sql args: /etc/dovecot/dovecot-mysql.conf userdb: driver: passwd userdb: driver: sql args: /etc/dovecot/dovecot-mysql.conf socket: type: listen master: path: /var/run/dovecot/auth-master mode: 384 plugin: quota: maildir quota: maildir:user quota quota_warning: storage=80%% /usr/bin/quota_warning.sh 80 quota_warning2: storage=90%% /usr/bin/quota_warning.sh 90 quota_warning3: storage=99%% /usr/bin/quota_warning.sh 90 sieve: /var/mail/virtual/%d/%u/.dovecot.sieve I use smartsieve 1.0-RC2, with the patch for dovecot. Any idea of what is wrong? Thank you, Claudio Prono. -- ------------ Claudio Prono Systems Development @ PSS Srl, Divisione Implementazione Sistemi Via San Bernardino, 17 - 10137 Torino (TO) - IT Tel +39-011.32.72.100 Fax +39-011.32.46.497 PGP Fingerprint: 75C2 4049 E23D 2FBF A65F 40DB EA5C 11AC C2B0 3647 Disclaimer: http://atpss.net/disclaimer ------------

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[Dovecot] Push Mail?
by toneeedavis＠googlemail.com 29 Jan '09

29 Jan '09

Hi Guys, I am just about to get my hands on a new blackberry mobile phone and I have done quite a bit of reading about different bits about getting the blackberry to work with Dovecot. Can anyone make any suggestions about the best way to either implement a solution like push mail for dovecot? or is there a plugin etc? Hope someone can help me, thanks in advance. Kind Regards Tony

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[Dovecot] deliver and qmail
by Tim Traver 29 Jan '09

29 Jan '09

Hi all, ok, after looking at all of the posts that I've found, and trying numerous settings, I am a little stumped as to how to set up the deliver program with qmail to get everything correct. Ultimately, I really don't want to do a lookup of the home dir if I don't have to. I'd rather specify the stuff in the .qmail-user file for that particular user to avoid the extra step. In looking in the wiki, it says for users without a lookup to use HOME=/path/to/user/homedir deliver -f $FROM_ENVELOPE but I can't do that in the .qmail file, which would normally look something like this : |/var/qmail/bin/preline -f /usr/local/libexec/dovecot/deliver -f ${SENDER:-<>} I would rather not do the master authentication socket as described for obvious reasons. is there a format in the .qmail file that I can use with deliver to achieve what I want??? Thanks, Tim.

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[Dovecot] Confused about permissions needed for shared mailbox
by Thomas Hummel 28 Jan '09

28 Jan '09

Hello, let me re-state, hopefully in clearer terms, what I tried to described in a previous thread : With dovecot-1.1.8/Maildir/LDAP pass/userdb (prefetch), I'm trying to set up a Maildir ".box" shared in rw between 2 users in a "Public" namespace. I can't get it to work unless I chmod 777 everything, which obiously is not what I want. 1) am I correct thinking that the system_user userdb extra_field and unix permissions should be enough to achieve that and that ACLs is only if I want to fine tunes mailbox permissions ? 2) let's say that my public namespace prefix is Public/, that the .box/ maildir is in /path/to/public/.box and my 2 users belong to the doveshared unix group. I thought it would be enough to have drwxrws--- 3 root doveshared 4096 Jan 28 14:55 public drwxrws--- 3 root doveshared 4096 Jan 28 14:55 public/.box -rwxrws--- 1 root doveshared 0 Jan 26 18:25 public/.box/dovecot-shared provided that my prefetch userdb returns system_user, as I think the following says in dovecot-ldap.conf : pass_attrs = uid=user,userPassword=password,homeDirectory=userdb_home,,,uidNumber=userdb_uid,gidNumber=userdb_gid,shadowMax=userdb_system_user and providedt that in LDAP shadowMax: 80 (whatever value). But this doesn't seem to work. By the way : Am I supposed to have a dovecot-shared file in public as well (that is not only in public/.box) ? 3) let's say I try ACLs with the same setup (anyone <all permissions> for starters) would pass_attrs = uid=user,userPassword=password,homeDirectory=userdb_home,,,uidNumber=userdb_uid,gidNumber=userdb_gid,shadowMax=userdb_system_user.title=userdb_acl_groups and title: group1,doveshared be a correct setup ? Do I need an dovecot-acl file only in .box or in public too ? My understanding is that my setup doesn't work because for some reason, dovecot doesn't see my users secondary groups or doesnt take them into account... Any thoughts which might help ? -- Thomas Hummel | Institut Pasteur <hummel(a)pasteur.fr> | Pôle informatique - systèmes et réseau

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[Dovecot] Symlink shared mailboxes and system_user extra field
by Thomas Hummel 28 Jan '09

28 Jan '09

Hello, I'm trying to set up, as explained in the wiki, shared mailboxes with symlink. I'm running dovecot-1.1.8 with LDAP pass/userdb. The Maildir layout goes like this : /courriel/boites/foobar : Maildir of user foobar (nfs) /courriel/meta/foobar : control files of user foobar (nfs) /var/dovecot/indexes : indexes (locally stored) I created : /courriel/boites/doveshared/.box/ : the Maildir I want to share /courriel/boites/foobar/.box -> /courriel/boites/doveshared/.box (symlink) /courriel/boites/foobaz/.box -> /courriel/boites/doveshared/.box (symlink) the unix and LDAP group doveshared, so /etc/group holds : doveshared:*:<gid>:foobar,foobaz the permissions on the real Maildir are ok for that group : drwxrwx--- 3 root doveshared 4096 Jan 26 18:58 /courriel/boites/doveshared drwxrwx--- 5 root doveshared 4096 Jan 26 18:58 .box (in /courriel/boites) I made the userdb (prefetch) return the system_user extra_field (for now, I'm using an used LDAP attribute - I will create a new attribute in my schema later) : pass_attrs = uid=user,userPassword=password,homeDirectory=userdb_home,,,uidNumber=userdb_uid,gidNumber=userdb_gid,shadowMax=userdb_system_user and it seems to be actually returned : Jan 27 09:34:10 munster3 dovecot: auth(default): ldap(foobar,157.99.64.42): result: uid(user)=foobar uidNumber(userdb_uid)=xxx gidNumber(userdb_gid)=xxx homeDirectory(userdb_home)=/home1/xxx/foobar userPassword(password)=<hidden> shadowMax(userdb_system_user)=380 But I can't subscribe to the mailbox : stat(/courriel/boites/doveshared/.box/tmp) failed: Permission denied (euid=xxx egid=<primary gid>) as a matter of fact, the egid seems to be the primary gid. What am I missing ? Thanks. -- Thomas Hummel | Institut Pasteur <hummel(a)pasteur.fr> | Pôle informatique - systèmes et réseau

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[Dovecot] (imap) killed with signal 9 on Linux/OpenVZ VPS
by Adam Flott 28 Jan '09

28 Jan '09

I'm trying to get dovecot running on my VPS and the main imap process is receiving a SIGKILL from what I presume to be the Linux Kernel and/or OpenVZ. This happens after I login and my client(s) just sit their idling. The mailbox is empty. I'm not running out of memory. stracing the process doesn't show anything interesting... ... gettimeofday({1233024777, 844804}, {420, 0}) = 0 gettimeofday({1233024777, 844912}, NULL) = 0 poll([{fd=4, events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=2, events=POLLERR|POLLHUP|POLLNVAL}, {fd=0, events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}], 3, 10000) = -1 EINTR (Interrupted system call) +++ killed by SIGKILL +++ This is on a CentOS 5.2 VPS. I haven't changed much other than installing a few packages. I've also had this exact same problem on Debian 4.0 VPS (OpenVZ) under the same machine. Turning off SSL and logging in plain old IMAP didn't change anything. Under the Debian installation I tried the latest version of dovecot (1.1.8 or so), different I/O loop methods, turning them off, on, etc. The only other reference via Google I can find to this sort of problem is: http://www.dovecot.org/list/dovecot/2007-December/027440.html But that was with the login process, whereas mine is with the imap daemon. Any help is greatly appreciated. Adam # uname -a Linux npjh.com 2.6.18-ovz028stab039.1-smp #1 SMP Tue Jul 24 12:12:48 MSD 2007 i686 i686 i386 GNU/Linux # dovecot -n # 1.0.7: /etc/dovecot.conf log_path: /var/log/dovecot.log info_log_path: /var/log/dovecot-info.log protocols: imaps ssl_cert_file: /etc/ssl/certs/mail.pem ssl_key_file: /etc/ssl/private/mail.key disable_plaintext_auth: yes login_dir: /var/run/dovecot/login login_executable: /usr/libexec/dovecot/imap-login login_processes_count: 2 mail_location: maildir:~/Maildir maildir_copy_with_hardlinks: yes namespace: type: private separator: . prefix: INBOX. inbox: yes auth default: mechanisms: digest-md5 cram-md5 login plain passdb: driver: passwd-file args: /etc/dovecot/passwd userdb: driver: static args: uid=vmail gid=vmail home=/home/vmail/%u socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 user: postfix group: postfix # free total used free shared buffers cached Mem: 256000 75100 180900 0 0 0 -/+ buffers/cache: 75100 180900 Swap: 0 0 0

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[Dovecot] Unknown dict module: db with expire plugin
by Nicolas Letellier 28 Jan '09

28 Jan '09

Hello. I use dovecot 1.1.8 in a FreeBSD 6.3 Today, I want to active expire plugin. But it does not work. I made instructions described in http://wiki.dovecot.org/Plugins/Expire for a bdb database. See my dovecot -n: # 1.1.8: /usr/local/etc/dovecot.conf # OS: FreeBSD 6.3-RELEASE-p4 i386 ufs syslog_facility: local6 ssl_cert_file: /etc/ssl/mail/***********.cert ssl_key_file: /etc/ssl/mail/********************.key disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/imap-login login_user: dovecot-auth login_greeting: ************************** login_processes_count: 2 verbose_proctitle: yes first_valid_uid: 143 last_valid_uid: 143 first_valid_gid: 143 last_valid_gid: 143 mail_access_groups: mail mail_location: maildir:/var/mail/vmail/%u/ mail_plugins: quota imap_quota mail_log expire imap_client_workarounds: delay-newmail outlook-idle netscape-eoh tb-extra-mailbox-sep auth default: mechanisms: plain login passdb: driver: sql args: /usr/local/etc/dovecot/dovecot-sql.conf userdb: driver: sql args: /usr/local/etc/dovecot/dovecot-sql.conf socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix master: path: /var/run/dovecot/auth-master mode: 432 user: dovecot group: mail plugin: quota: maildir quota_rule: *:storage=1000M quota_rule2: Trash:storage=50M quota_warning: storage=80%% /usr/home/scripts/mail_quota-warning.sh 80 quota_warning2: storage=90%% /usr/home/scripts/mail_quota-warning.sh 90 quota_warning3: storage=95%% /usr/home/scripts/mail_quota-warning.sh 95 sieve: /var/mail/vmail/%u/sieve expire: Trash 7 Trash/* 7 Junk 2 expire_dict: proxy::expire dict: expire: db:/var/lib/dovecot/expire.db The /var/lib/dovecot/expire.db file is not automatically created. So I created it, with root rights. After, the file is always to 0 bytes. When I want to dovecot --exec-mail ext /usr/local/libexec/dovecot/expire-tool --test I have this: Error: read(/var/run/dovecot/dict-server) failed: Remote disconnected And in my logs: Jan 28 09:24:36 ******** dovecot: dict: Unknown dict module: db Jan 28 09:24:36 ******** dovecot: dict: Failed to initialize dictionary 'expire' I do not understand the problem. I made instructions on the wiki page. Is anybody could help me to resolve this? Thanks. Regards, (ps : another question : what's the advantage of expire plugin with a manual cron job?) -- -Nicolas.

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[Dovecot] Old Thunderbird problem - need a fix
by Marc Perkel 28 Jan '09

28 Jan '09

I've been having a Dovecot/Thunderbird problem for about a year now and I need a fix. When I restart dovecot everything is fine but as the day progresses thing start deteriorating. When I empty my trash folder it doesn't empty. I get an indication that email has arrived in my inbox by the unread message count but can't access it. Messages arrive by appear to be empty. Folders that should be empty still have message counts showing. With all of the above problems - restarting dovecot make them all go away. I am doing something unusual in that I use Exim to directly deliver (maildir) to the inbox and other folders. And I have processes that take email out of certain folders (spam learning). Whatever the problem is I think that when I restart Dovecot I'm forcing Thunderbird to reconnect. Perhaps the solution is to somehow force Thunderbird to have to reconnect every time rather than have a persistent connection? Looking for suggestions. Thanks in advance.

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