August 2007 - dovecot

[Dovecot] Migrating from imapd to dovecot - how to keep user's Mail folders
by Patrick - South Valley Internet 17 Aug '07

17 Aug '07

Hi all, We're migrating off our current mail server with runs postfix and imapd on an AIX machine to Postfix and Dovecot running linux. Our customers have a lot of IMAP folders with folders they configured, which are currently located in their /home directory on the current mail server. The new mail server will have them at the same location. How do I configure Dovecot so that when a customer connects via IMAP using their favorite e-mail client, that the folders will be there? Thanks in advance. Patrick

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[Dovecot] Dovecot 1.0.3: LDA + quota plugin
by Przemek Grądzki 17 Aug '07

17 Aug '07

I have problem with quota limit settings for "deliver" - global plugin settings overrides userdb quota setting !!! imap and pop3 works fine. Quota limit for user is set to "quota=maildir:ignore=Kosz:storage=512". And "maildirsize" file in user's mail_location contains "524288S" line - good. But when I set: ---------------- plugin { quota = maildir:ignore=Kosz:storage=102400 } ---------------- in "/etc/dovecot.conf", quota limit is set to "104857600S" in "maildirsize" file - BAD. Local delivery is configured as in http://wiki.dovecot.org/LDA, quota plugin is set in /etc/dovecot.conf: ---------------- protocol lda { ...... mail_plugins = cmusieve quota #mail_plugin_dir = /usr/lib/dovecot/lda ..... } ---------------- Per-user quota is configured like this (from LDAP): ---------------- user_attrs = homeDirectory=home,uidNumber=uid,gidNumber=gid,mailQuotaSize=quota=maildir:ignore=Kosz:storage pass_attrs = uid=user,userPassword=password,homeDirectory=userdb_home,uidNumber=userdb_uid,gidNumber=userdb_gid,mailQuotaSize =userdb_quota=maildir:ignore=Kosz:storage ---------------- "mailQuotaSize" attribute contains quota limit in kilobytes. /etc/dovecot.conf: ---------------------------- # 1.0.3: /etc/dovecot.conf log_path: /dev/stderr protocols: imap imaps pop3s managesieve 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 login_executable(managesieve): /usr/libexec/dovecot/managesieve-login first_valid_uid: 8 first_valid_gid: 12 mail_location: maildir:%h/Maildir mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_executable(managesieve): /usr/libexec/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/imap mail_plugin_dir(imap): /usr/lib/dovecot/imap mail_plugin_dir(pop3): /usr/lib/dovecot/pop3 mail_plugin_dir(managesieve): /usr/lib/dovecot/managesieve pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh pop3_client_workarounds(managesieve): auth default: mechanisms: plain login gssapi passdb: driver: ldap args: /etc/dovecot-ldap.conf userdb: driver: prefetch userdb: driver: ldap args: /etc/dovecot-ldap.conf socket: type: listen master: path: /var/run/dovecot/auth-master mode: 438 plugin: quota: maildir:ignore=Kosz:storage=102400 ----------------- PS. Sorry for my english.

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[Dovecot] High CPU utilization on Solaris 10
by Jon Alessandrello 17 Aug '07

17 Aug '07

I've read similar post about such an issue, but have not seen any posted solutions. I have a clean install of Solaris 10 running a Sunfire v440 w/postfix. I am using dovecote solely for SMTP authentication, and it is working just fine except while running top I constantly see: 548 root 1 30 0 5240K 3416K run 522:51 49.45% dovecot-auth The process never crashes, nor are there any errors. I ran a test devel box with an almost identical setup of postfix and dovecot on Solaris 9 (V240) and the functionality is identical, but with no high CPU usage. The following are my configs and system info: dovecot --version 1.0.3 OS Solaris 10 Sparc (Patched) No NFS all local ufs dovecot -n # 1.0.3: /usr/local/etc/dovecot.conf log_path: /var/log/dovecot protocols: none ssl_disable: yes login_dir: /usr/local/var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/imap-login auth default: mechanisms: plain login passdb: driver: ldap args: /usr/local/etc/dovecot-ldap.conf userdb: driver: ldap args: /usr/local/etc/dovecot-ldap.conf socket: type: listen client: path: /opt/pmx/postfix/var/private/auth mode: 432 user: postfix group: postfix cat dovecot-ldap.conf: hosts = localhost dn = cn=priv-account,ou=container,dc=example,dc=com dnpass = mydnpasswd ldap_version = 3 base = ou=people,dc=example,dc=com scope = subtree pass_attrs = uid=user,userPassword=password pass_filter = (&(objectClass=posixAccount)(uid=%u)) default_pass_scheme = CRYPT Any help would be great!! -Jon

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[Dovecot] dovecot notifying a database about total number of messages.
by Erland Nylend 17 Aug '07

17 Aug '07

Hello, in addition to our mail system, we have some other systems which needs to know how many messages, and how many unread messages, a user has in his/her inbox (maildir). Currently, we have a mod_perl script which takes a mail address as input, and then traverses the maildir, and outputs the number of unread messages. Our challenge is that the maildirs are located on a SAN, and traversing a maildir is slow. We currently have more than 100 requests pr. second, which we handle with caching, and spreading the load across different servers. I'm looking into the possibility of either using dovecots index files, or having dovecot update a database with total number of messages/number of unread messages. Question: 1) if I'm using perl, is there any way I can read in the information in the index files? Is the data formatted in some standarized way, so that I can parse it, or use a module which read in the data? (if I can read the indexes in wrapper scripts to imap/pop/deliver, then I could probably update a database with the information) 2) how would you proceed, if the aim is to end up with dovecot notifying a database regarding the number of messages, and unread messages? -- Erland Nylend

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[Dovecot] ssh tunneling and maildir
by Joel Becker 17 Aug '07

17 Aug '07

Hello everyone, please keep my CC'd, I'm not on the list. I've been using dovecot happily via an ssh tunnel. My mutt is configured to use IMAP, and the tunnel is as follows in my muttrc: set tunnel="ssh -q mymailhost 'MBOX_LOCKS=fcntl MAIL=/home/jlbec/mail /usr/libexec/dovecot/imap'" It should be pretty obvious that this logs into mymailhost as me (via SSH keyauth) and runs /usr/libexec/dovecot/imap directly as a foreground process. Setting MAIL, it points dovecot imap to my mbox folders. dovecot imap speaks imap over stdin/out, this goes over the ssh to mutt. It works great. Really great. I don't need root access at all, the server isn't running dovecot globally, and I get IMAP through firewalls if I can ssh through a firewall/vpn. I'm using mbox and fcntl, so my MTA has no trouble working in concert. However, this doesn't appear to be documented anywhere. A friend showed it to me, and I don't even remember who that was. I'm now considering changing to maildir folders. I figure dovecot imap might figure out a folder is maildir when stat says S_IFDIR, but without documentation, I can't figure out how to tell dovecot imap to use maildir when I create a folder. I'm also unsure how this will interact with my MTA. For the latter, I'm thinking I just need to configure my MTA to use dovecot's deliver program. For the former, is there some magic environment variable I need to add to my tunnel command line? Thanks Joel -- "The first requisite of a good citizen in this republic of ours is that he shall be able and willing to pull his weight." - Theodore Roosevelt http://www.jlbec.org/ jlbec(a)evilplan.org

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[Dovecot] Recover mailboxes
by Jordi Espasa Clofent 17 Aug '07

17 Aug '07

HI all, Some time ago I've user(a)domain.com in maildir mailbox with their own mails, their folders, subfolders, indexes files.. etc My server was missconfigured and I've rebuilded all SMTP; I've recreated all the mailboxes with same names that before. Of course, the problem is the content of these mailboxes it's not the same. So, the idea is: add all the contento from user(a)domain.com (old) mailbox to user(a)domain.com (new) mailbox. because I have got a complete copy of (old) mailboxes and their content. ¿How can I do it?

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[Dovecot] High CPU utilization on Solaris 10
by Jon Alessandrello 17 Aug '07

17 Aug '07

Some people had this problem when giving some superoptimization flags with Sun Studio. Did you do that? -Timo No I did not use any optimization. And Dave, I took what you said and just tried both dovecot-1.0.2 dovecot-1.0.rc29 and have the same exact results :(

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[Dovecot] index and control files not being created
by Luis Pablo Michelena Scaffo 16 Aug '07

16 Aug '07

Hello, I'm configurating dovecot 1.0.3 on debian etch. While trying to set public folders, y decided to have the index and control files on the users homes. those homes are mounted by nfs, with disabled access to root. In that scenario, I'm getting the errors i transcribe next: Aug 16 11:21:17 server dovecot: IMAP(user): fchown(/home/user/Maildir/shared-settings/control/.folder/dovecot-uidlis t) failed: Operation not permitted Aug 16 11:21:17 server dovecot: IMAP(user): fchown(/home/user/Maildir/shared-settings/control/.folder/dovecot-uidlis t) failed: Operation not permitted Aug 16 11:21:17 server dovecot: IMAP(user): rename(/inbox/shared/.folder/cur/mailfile, /inbox/shared/.folder/cur/mailfile :2,S) failed: Operation not permitted Aug 16 11:21:17 server dovecot: IMAP(user): fchown(/home/user/Maildir/shared-settings/control/.folder/dovecot-uidlis t) failed: Operation not permitted Aug 16 11:21:17 server dovecot: IMAP(user): rename(/inbox/shared/.folder/cur/mailfile, /inbox/shared/.folder/cur/mailfile :2,S) failed: Operation not permitted Aug 16 11:21:26 server dovecot: IMAP(user): Disconnected: Logged out Aug 16 11:21:27 server dovecot: IMAP(user): fchown(/home/user/Maildir/shared-settings/control/.folder/dovecot-uidlis t) failed: Operation not permitted Aug 16 11:21:27 server dovecot: IMAP(user): rename(/inbox/shared/.folder/cur/mailfile, /inbox/shared/.folder/cur/mailfile :2,S) failed: Operation not permitted Then I touched those files and the errors faded away. Beside that, I was testing the setup, and while trying to delete some files on the shared folder, I got another error: Aug 16 16:38:04 server dovecot: IMAP(user): rename(/inbox/shared/.folder/cur/1183976419.755_0.server:2,Sa, /inbox/shared/.folder/cur/1183976419.755_0.server:2,STa) failed: Operation not permitted Aug 16 16:38:11 server dovecot: IMAP(user): fchown(/home/user/Maildir/shared-settings/control/.folder/dovecot-uidlist) failed: Operation not permitted Aug 16 16:38:11 server dovecot: IMAP(user): rename(/inbox/shared/.folder/cur/1183976419.755_0.server:2,Sa, /inbox/shared/.folder/cur/1183976419.755_0.server:2,STa) failed: Operation not permitted Which seems odd, because I though that as a flag, the deleted flag should be marked on the index files and not directly on the shared folder (where the user hasn't any permission other than reading), ant the same goes to the "read" flag Am I wrong? Is there any workaround to make dovecot behave the way I'd liked? The config follows: login_executable: /usr/lib/dovecot/imap-login mail_extra_groups: mail mail_location: maildir:/home/%u/Maildir:INBOX=/inbox/mdir/%u mmap_disable: yes namespace: type: private separator: / location: maildir:~/Maildir:INBOX=/inbox/mdir/%u inbox: yes namespace: type: public separator: / prefix: Shared folders/ location: maildir:/inbox/shared:INDEX=/home/%u/Maildir/shared-settings/index:CONTROL=/home/%u/Maildir/shared-settings/control auth default: passdb: driver: passwd args: blocking=yes passdb: driver: shadow userdb: driver: passwd Cheers, Luis

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[Dovecot] ANY password option
by Master Abi 16 Aug '07

16 Aug '07

Hi We sometimes migrate mailboxes over to one of our mail servers which has a very handy feature called 'ANY password'. This will allow access to a mailbox using the given username and disregard checking for the password. This is a useful feature for many reasons. Is there a possibility Dovecot could have such a a feature or is there a workaround already. Thanks Master

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Re: [Dovecot] use of deliver from procmail advisable?
by Jerry Yeager 16 Aug '07

16 Aug '07

On Aug 15, 2007, at 5:00 AM, dovecot-request(a)dovecot.org wrote: > Message: 7 > Date: Wed, 15 Aug 2007 00:58:40 +0200 > From: martin f krafft <madduck(a)madduck.net> > Subject: Re: [Dovecot] use of deliver from procmail advisable? > To: dovecot(a)dovecot.org > Message-ID: <20070814225840.GA23721(a)piper.oerlikon.madduck.net> > Content-Type: text/plain; charset="us-ascii" > > also sprach Charles Marcus <CMarcus(a)Media-Brokers.com> > [2007.08.14.2028 +0200]: >>> Well, the whole point of sieve, I believe, is to make it >>> something that an >>> admin would want to let arbitrary users modify on their own >>> recognizance, >>> and the ability to specify arbitrary programs to run would be >>> just *asking* >>> to be hacked. >> >> Wouldn't a decent, secure alternative to procmail be sieve+amavisd- >> new? > > Except it's not really possible to make amavisd-new do per-user spam > filtering. And it's even more of a performance hog. > > -- > martin; (greetings from the heart of the sun.) > \____ echo mailto: !#^."<*>"|tr "<*> mailto:" net@madduck > > "all language designers are arrogant. goes with the territory..." > -- larry wall > > spamtraps: madduck.bogus(a)madduck.net >

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