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[Dovecot] Segfault with dovecot -n / dovecot 2.0
by ja nein 26 May '09

26 May '09

Hi all, and while trying to get some environmental stuff via dovecot -n, I got a segfault (dovecot is not in system path): /opt/dovecot-2.0/sbin/dovecot -c /etc/dovecot-2.0/sql/dovecot.conf -n # 2.0.UNSTABLE: /etc/dovecot-2.0/sql/dovecot.conf # OS: Linux 2.6.24-23-xen x86_64 Ubuntu 8.04.2 nfs Segmentation fault stat("/home/dovecot/mail/", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0 open("/etc/mtab", O_RDONLY) = 6 fstat(6, {st_mode=S_IFREG|0644, st_size=480, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff654983000 read(6, "/dev/sda2 / ext3 rw,noatime,nodi"..., 4096) = 480 stat("/", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 stat("/proc", {st_mode=S_IFDIR|0555, st_size=0, ...}) = 0 stat("/sys", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 stat("/var/run", {st_mode=S_IFDIR|0755, st_size=400, ...}) = 0 stat("/var/lock", {st_mode=S_IFDIR|S_ISVTX|0777, st_size=40, ...}) = 0 stat("/dev", {st_mode=S_IFDIR|0755, st_size=12820, ...}) = 0 stat("/dev/shm", {st_mode=S_IFDIR|S_ISVTX|0777, st_size=40, ...}) = 0 stat("/dev/pts", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 stat("/home/dovecot", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0 close(6) = 0 munmap(0x7ff654983000, 4096) = 0 write(1, "# OS: Linux 2.6.24-23-xen x86_64"..., 51# OS: Linux 2.6.24-23-xen x86_64 Ubuntu 8.04.2 nfs ) = 51 lseek(1, 0, SEEK_CUR) = -1 ESPIPE (Illegal seek) getsockname(1, 0x7fff5c986f50, [18446744069414584348]) = -1 ENOTSOCK (Socket operation on non-socket) --- SIGSEGV (Segmentation fault) @ 0 (0) --- +++ killed by SIGSEGV +++ Process 30890 detached Version is still dovecot 2.0 hg latest. Regards, Sebastian

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[Dovecot] Converting mbox files with dots in names to Maildir
by Kenneth Porter 26 May '09

26 May '09

I tried to run convert-tool from dovecot-1.2-0.rc2 on a tree of mbox files with some containing dots in the filenames and got this failure: # /usr/libexec/dovecot/convert-tool ken /home/ken mbox:/home/ken/mail maildir:/home/ken/Maildir Error: Mailbox conversion: Couldn't create mailbox Lists.WINE.patches: Mailbox already exists Error: Internal failure *** glibc detected *** /usr/libexec/dovecot/convert-tool: double free or corruption (fasttop): 0x08ce6cc8 *** The directory in question contains these files: # ls Lists/WINE/ announce bugs cvs devel patches patches.20050130 Will I need to go through the (large) file tree and rename all files with dots in the names? If so, anyone have a script that will do that? (Changing the dot to dash would be fine with me.)

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[Dovecot] lda deliver per instance sieve configuration
by J.P. Trosclair 26 May '09

26 May '09

I'd like to override the sieve settings in dovecot.conf for a deliver instance that is being run from a custom archiving script. This is dovecot 1.0.15 on debian lenny. Is this possible? Doesn't appear to be looking through the WIKI. If it's not any suggestions? The problem is the user specific sieve scripts override where the archived mail is supposed to be stored (maildir:~/.Archives.YYYY-MM) so I'd like to disable their sieve scripts while the archived mail delivery via deliver is taking place. Thanks, J.P.

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[Dovecot] Separate home and mail folders problem on delivery
by Николай Бочев 26 May '09

26 May '09

Hello, I am using dovecot 1.2rc series on my mail server combined with postfix ( virtual users with postgre ). I have setup separate home and mail locations. It works fine ( with sieve etc. ). The user home folders are in /home/vmail/%d/%n and mailboxes are in /srv/mail/%d/%n . The permissions are fine and everything is working except in the following case : If a user does not have a home dir already crated ( the home dirs get auto created when creating a sieve script through managesieve for example ), and he recieves a message with an attachment, the delivery fails with the following error : May 19 10:47:28 mail postfix/pipe[2759]: 969531007B: to=<office(a)grandstarco.com>, relay=dovecot, delay=2296, delays=2296/0.2/0/0.06, dsn=4.3.0, status=deferred (temporary failure) The Dovecot deliver log says : > 2009-05-19 10:47:28 deliver(office(a)grandstarco.com): Error: creat(/home/vmail/grandstarco.com/office/.temp.mail.dodo.bg.2760.1242719248… failed: No such file or directory > 2009-05-19 10:47:28 deliver(office(a)grandstarco.com): Error: copy: i_stream_read() failed: No such file or directory > 2009-05-19 10:47:28 deliver(office(a)grandstarco.com): Error: sieve: msgid=<1242716935.24056.6.camel(a)shiny.bgservice.local>: failed to store into mailbox 'INBOX': Internal error occurred. Refer to server log for more information. [2009-05-19 10:47:28] > 2009-05-19 10:47:28 deliver(office(a)grandstarco.com): Error: sieve: script /home/vmail/global.sieve failed with unsuccessful implicit keep Here's my dovecot -n dovecot -n # 1.2.rc4: /etc/dovecot/dovecot.conf # OS: Linux 2.6.27-11-server x86_64 Ubuntu 8.10 ext3 log_timestamp: %Y-%m-%d %H:%M:%S protocols: imap imaps managesieve ssl_ca_file: /etc/dovecot/certs/cacert.pem ssl_cert_file: /etc/dovecot/certs/cert.pem ssl_key_file: /etc/dovecot/certs/key.pem ssl_key_password: 1234 ssl_cipher_list: ALL:!LOW:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(managesieve): /usr/lib/dovecot/managesieve-login login_greeting: Dodo.bg IMAP Ready. mail_privileged_group: vmail mail_uid: 1001 mail_gid: 1001 mail_location: maildir:/var/mail/%d/%n mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(managesieve): /usr/lib/dovecot/managesieve mail_plugins(default): quota imap_quota fts fts_squat acl imap_acl expire mail_log autocreate mail_plugins(imap): quota imap_quota fts fts_squat acl imap_acl expire mail_log autocreate mail_plugins(managesieve): mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(managesieve): /usr/lib/dovecot/modules/managesieve mail_log_max_lines_per_sec: 0 imap_client_workarounds(default): outlook-idle delay-newmail imap_client_workarounds(imap): outlook-idle delay-newmail imap_client_workarounds(managesieve): namespace: type: private separator: / location: maildir:/srv/mail/%Ld/%Ln/ inbox: yes list: yes subscriptions: yes namespace: type: shared separator: / prefix: shared/%%u/ location: maildir:/srv/mail/%%d/%%n/:INDEX=~/shared/%%u list: children auth default: mechanisms: plain login master_user_separator: * verbose: yes debug: yes passdb: driver: passwd-file args: /etc/dovecot/passwd.masterusers pass: yes master: yes 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 socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master: path: /var/run/dovecot/auth-master mode: 384 user: vmail group: vmail plugin: convert_mail: maildir:/srv/mail/%d/%n fts: squat quota_warning: storage=95%% /usr/local/bin/quota-warning.sh 95 quota_warning2: storage=80%% /usr/local/bin/quota-warning.sh 80 quota: dict:user::proxy::quota quota_rule: *:storage=1GB quota_rule2: Trash:storage=10%% quota_rule3: spam:storage=20%% acl: vfile acl_shared_dict: file:/srv/mail/%d/shared-mailboxes.db expire: Trash/* 7 Spam 30 spam 7 expire_dict: proxy::expire mail_log_events: delete undelete expunge copy mailbox_delete mailbox_rename append mail_log_fields: uid box msgid size from subject sieve: /home/vmail/%d/%n/.dovecot.sieve sieve_dir: ~/sieve sieve_before: /home/vmail/global.sieve autocreate: Trash autocreate2: spam autosubscribe: Trash autosubscribe2: spam dict: quota: pgsql:/etc/dovecot/dovecot-dict-sql-quota.conf expire: pgsql:/etc/dovecot/dovecot-dict-sql-expire.conf Any ideas on what am i doing wrong are welcome

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[Dovecot] convert-tool skip_dotfiles is not the actual option
by Kenneth Porter 26 May '09

26 May '09

Looking at the source for convert-tool.c, I see this: "Usage: <username> <home dir> <source mail env> <dest mail env>\n" \ " [skip_broken_mailboxes] [skip_dotfiles] [alt_hierarchy_char=<c>]" else if (strcmp(argv[i], "skip_dotdirs") != 0) set.skip_dotdirs = TRUE; Looks like the usage line needs to be fixed (dovecot-1.2-0.rc2).

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[Dovecot] maillog plugin issue
by Ibrahim Harrani 26 May '09

26 May '09

Hello, I just installed dovecot 1.2-rc4 on FreeBSD with qmail and vpopmail. I am using roundcube webmail to test(read,delete,move mails) I configured mail-log plugin according to http://wiki.dovecot.org/Plugins/MailLog log fields: mail_log_fields: uid box msgid size This but in the log file I only that something like that. May 23 15:37:14 IMAP(test(a)mydomain.com): 127.0.0.1 Info: copy: uids=7, box=Spam, dest=Spam, size=540 May 23 15:37:14 IMAP(test(a)mydomain.com): 127.0.0.1 Info: delete: uids=7 May 23 15:37:14 IMAP(test(a)mydomain.com): 127.0.0.1 Info: expunge: uids=7, size=540 May 23 15:37:14 IMAP(test(a)mydomain.com): 127.0.0.1 Info: Disconnected: Logged out bytes=205/1558 I don't see msgid etc? Also I added flag_change to mail_log_events and from, subject, flags to mail_log_fields. I don't see anything about from, subject, flags etc. I only see the following lines. May 23 15:05:49 mail dovecot: IMAP(test(a)mydomain.com): flag_change: uids=5 May 23 15:05:49 mail dovecot: IMAP(test(a)mydomain.com): Disconnected: Logged out bytes=168/1027 Here is my config. Did I miss something? dovecot -n # 1.2.rc4: /opt/mail/imap/etc/dovecot.conf # OS: FreeBSD 6.3-RELEASE-p9 amd64 log_path: /var/log/dovecot.log protocols: imap pop3 ssl: no disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable(default): /opt/mail/imap/libexec/dovecot/imap-login login_executable(imap): /opt/mail/imap/libexec/dovecot/imap-login login_executable(pop3): /opt/mail/imap/libexec/dovecot/pop3-login login_greeting: Welcome first_valid_uid: 89 mail_debug: yes mail_executable(default): /opt/mail/imap/libexec/dovecot/imap mail_executable(imap): /opt/mail/imap/libexec/dovecot/imap mail_executable(pop3): /opt/mail/imap/libexec/dovecot/pop3 mail_plugins(default): mail_log mail_plugins(imap): mail_log mail_plugins(pop3): quota mail_log mail_plugin_dir(default): /opt/mail/imap/lib/dovecot/imap mail_plugin_dir(imap): /opt/mail/imap/lib/dovecot/imap mail_plugin_dir(pop3): /opt/mail/imap/lib/dovecot/pop3 mail_log_prefix: %Us(%u): %r mail_log_max_lines_per_sec: 0 auth default: passdb: driver: vpopmail userdb: driver: passwd userdb: driver: vpopmail plugin: mail_log_events: delete undelete expunge copy mailbox_delete mailbox_rename mail_log_group_events: mail_log_fields: uid box msgid size quota: maildir

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[Dovecot] little problem with lmtp and 8bitmime mail from:
by ja nein 26 May '09

26 May '09

Hi all, I'm very excited to see lmtp in dovecot now. Starting to play, I encountered following problem: With senders in normal mail address format, everything is delivered right, lmtp works as expected. But with 8bitmime senders, like kernel mailing list, lmtp returns a 5.5.4 not supported and mail is bounced. Is this expected, meaning just not implemented, or could it be a bug? E.g.: Problem: MAIL FROM:<linux-kernel-owner+info=40xxxx.com-S1753112AbZEYPtt(a)vger.kernel.org> BODY=8BITMIME RCPT TO:<info(a)xxxx.com> DATA vstream_fflush_some: fd 12 flush 130 vstream_buf_get_ready: fd 12 got 89 501 5.5.4 Unsupported options Ok: MAIL FROM:<some.address(a)somewhere.com> RCPT TO:<info(a)xxxx.com> DATA vstream_fflush_some: fd 12 flush 71 vstream_buf_get_ready: fd 12 got 36 250 2.1.0 OK 250 2.1.5 OK 354 OK Dovecot version is latest hg dovecot-2.0 trunk. Regards, Sebastian

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[Dovecot] Deleting mail account?
by David Reid 25 May '09

25 May '09

This is likely a daft question, but how do I remove a mailbox from a dovecot server? I'd like to simply remove it from the disk as well, deleting any messages, indexes etc etc Is there a way? david !DSPAM:1715,4a1a817434922186719589!

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[Dovecot] creating skeleton Maildir
by Giuliano Gavazzi 25 May '09

25 May '09

Dear all, when I had a courier installation still in place I used to create the Maildir tree for a new user using its maildirmake (IIRC) utility. Now that I had to rebuild a server from scratch, and using dovecot did not install courier, I have to create Maildirs without that utility. I seem to remember that libexec/imap could be called in a way to create the Maildir and its required subfolders (.Sent, .Drafts, etc). Do I remember correctly? If so what are the command line options? I cannot find pointers in the wiki or elsewhere. If not, I will just create a template and script the whole process. Thanks Giuliano

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[Dovecot] Dovecot Max Connections & mbox vs. maildir format - Recommendations?
by V S Rao 24 May '09

24 May '09

>> I had big issues with timeouts until I realize the the imap and mbox format >> isnt a good choice if your users have huge naiboxes. >> At my server there were users with mailboxes arount 700MB to over 1GB. each >> time one of those users checked their email >> the imap server had to open this huge file and parse it, causing I/O issues. >> The only solution I found it was switch from mbox format to maildir format. I am changing the subject line to reflect the discussion. I too have a similar case with large mailboxes. My user mix is 70% POP3 vs. 30% IMAP. Would maildir still be the best recommended format? What is the opinion of the experts here? The reason I am asking is that I am preparing to upgrade my mail server to RHEL 5.3. That would mean my Dovecot will be atleast 1.0.7, which should not be bad. If the recommendation is that I go from mbox format to Maildir, I want to plan that as well. However I don't want to land up in a situation where, I have to move back from Maildir to mbox again. So please do advice me on the best. BTW one question: Assuming that my server has enough resources, ( 8 CPU @ 3.0GHz, 8GB RAM, 2Gbps FC Storage directly attached to the server & Gigabit NIC) what is the maximum number of concurrent connections that Dovecot can handle POP3 + IMAP combined? And I am asking for all the processes combined: POP3-login processes IMAP-login processes POP3 sessions IMAP sessions Any TCP/IP kernel parameters to be tuned? or maybe in dovecot.conf? Any advice will be immensely valuable to me while doing the migration. Thanks and Regards V S Rao

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