October 2008 - dovecot

[Dovecot] cyrus2courrier mass migration
by Mathieu Kretchner 05 Oct '08

05 Oct '08

Hello, So we've chosen to use dovecot as our imap mail server and replace our old cyrus server ! BUT : I would like to do a conversion of my imap accounts (and keep all theirs characteristics) from cyrus-imapd-2.2.12 in cyrus format to dovecot 1.1.3 in courrier format. I've tried those 3 tools : cyrus2courrier.1.5.ts cyrus2courier-1.3z4 imapsync (works well but very slow and should not be a true solution) But nothing is working to keep the seen/unseen flag (expect imapsync) ! I know my cyrus version is too "recent" but do you have any idea how could I do this migration ? A second problem is that I have 600 Go of imap account to migrate, if you've any clue on how to do a migration without loosing a lot of availability, I would be happy to read you ! Tanks in advance.

6 12

[Dovecot] Bug? Expunging Symlinked Maildir w/ Lazy_expunge Enabled
by Rich at Whidbey Telecom 05 Oct '08

05 Oct '08

Hi all, Using Dovecot 1.0.3 on RedHat Enterprise 5 (kernel 2.6.18-8.1.6.el5PAE), and NFS storage, we symlinked a Maildir folder: /mailstore/user/Maildir/.Junk -> /junkstore/user/Junkmaildir Everything works fine, until we try to expunge, which produces: A04 NO BUG: Unknown internal error This only happens if "lazy_expunge" is enabled: mail_plugins = quota imap_quota acl lazy_expunge lazy_expunge = .EXPUNGED/ .EXPUNGED/ .EXPUNGED/ Lazy_expunge works great on non-symlinked folders. We tried version 1.1 alpha2, which actually crashes in this scenario. The only fix we've found is to disable "lazy_expunge". Attached is our "dovecot -n" config. Anyone have an idea what might be causing this or a workaround? Thanks! Rich richs(a)whidbey.net # 1.0.3: /shared/dovecot.conf base_dir: /var/dovecot-mail/ log_path: /var/dovecot-mail/dovecot.log protocols: imap imaps pop3 pop3s ssl_ca_file: /adminstore/exim/ssl/instantsslroot.crt ssl_cert_file: /adminstore/exim/ssl/public-mail.crt ssl_key_file: /adminstore/exim/ssl/private-mail.key disable_plaintext_auth: no shutdown_clients: no login_dir: /var/dovecot-mail//login login_executable(default): /usr/local/libexec/dovecot/imap-login login_executable(imap): /usr/local/libexec/dovecot/imap-login login_executable(pop3): /usr/local/libexec/dovecot/pop3-login login_user: exim login_greeting: System ready. login_processes_count: 32 login_max_processes_count: 400 verbose_proctitle: yes mail_location: maildir:/mailstore/%Lu/Maildir:INDEX=MEMORY mail_cache_fields: mail_cache_min_mail_count: 65536 mailbox_idle_check_interval: 10 mmap_disable: yes lock_method: dotlock maildir_stat_dirs: yes maildir_copy_with_hardlinks: yes maildir_copy_preserve_filename: yes mail_executable(default): /usr/local/libexec/dovecot/rawlog /usr/local/libexec/dovecot/imap mail_executable(imap): /usr/local/libexec/dovecot/rawlog /usr/local/libexec/dovecot/imap mail_executable(pop3): /usr/local/libexec/dovecot/pop3 mail_plugins(default): quota imap_quota acl lazy_expunge mail_plugins(imap): quota imap_quota acl lazy_expunge mail_plugins(pop3): quota mail_plugin_dir(default): /usr/local/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 imap_client_workarounds(default): delay-newmail outlook-idle imap_client_workarounds(imap): delay-newmail outlook-idle imap_client_workarounds(pop3): outlook-idle pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %Mf pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh namespace: type: private separator: . inbox: yes namespace: type: private separator: . prefix: .EXPUNGED/ location: maildir:/mailstore/%u/Expunged:INDEX=MEMORY hidden: yes auth default: mechanisms: plain login passdb: driver: pam args: exim userdb: driver: ldap args: /adminstore/configs/dovecot-ldap.conf plugin: quota: maildir:storage=250000:ignore=Junk acl: vfile:/adminstore/configs/dovecot-acls

3 5

[Dovecot] Corrupted transaction log file / record size too small
by Steven Winikoff 05 Oct '08

05 Oct '08

I recently upgradeded dovecot on one of our servers from version 1.0.10 to version 1.1.3. Ever since, we've been seeing occasional errors similar to this sequence (with the username and IP addresses elided): Sep 30 00:09:56 alcor dovecot: pop3-login: Login: [4954], XXXX, NNN.NNN.NN.NNN Sep 30 00:09:56 alcor dovecot: wrapper[5006]: pop3, XXXX, NNN.NNN.NN.NNN Sep 30 00:09:56 alcor dovecot: pop3[5006] XXXX, NNN.NNN.NN.NNN: Corrupted transaction log file /home/XXXX/.imap/INBOX/dovecot.index.log: record size too small (type=0x40, offset=12224, size=0) Sep 30 00:09:56 alcor dovecot: pop3[5006] XXXX, NNN.NNN.NN.NNN: Couldn't init INBOX: Internal error occurred. Refer to server log for more information. [2008-09-30 00:09:56] Sep 30 00:09:56 alcor dovecot: pop3[5006] XXXX, NNN.NNN.NN.NNN: Mailbox init failed top=0/0, retr=0/0, del=0/0, size=0, xfer=0/95 System and dovecot configuration details are appended. I saw an archived mailing list message from January 2007 which may be relevant (www.mailinglistarchive.com/dovecot@dovecot.org/msg07908.html) in which the original poster's symptoms disappeared when he recompiled dovecot with gcc-3.4.0 instead of using gcc-3.1. In my case I used gcc-4.1.2, so I don't know if that's still relevant (and if so, what other version to use instead). In the output of `dovecot -n` which follows, /local/pkg/dovecot/localmods/wrapper.imap is a locally written program which registers the user's IMAP or POP connection in the lastlog file and also ensures that the user's shell is considered valid. I'd be surprised if this is relevant, but I've appended the source code in case it may be (and/or in case anyone else may find it useful!). I've been working around the problem by deleting the contents of ~user/.imap for affected users, but I'd really prefer to fix it properly. :-) Any suggestions would be gratefully received. Thanks, - Steven # server type = SunFire X4100 (two dual-core Opteron CPUs) # OS = Linux (Slamd64 12.0) # file system type = XFS # uname -a Linux alcor 2.6.25.2 #1 SMP Fri May 16 07:06:34 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux # dovecot --version 1.1.3 # (limit descriptors 4096; dovecot -n) # 1.1.3: /local/pkg/dovecot/root-dovecot-1.1.3/etc/dovecot.conf base_dir: /local/pkg/dovecot/data/var/run/dovecot syslog_facility: local0 protocols: imap imaps pop3 pop3s listen(default): *:143 listen(imap): *:143 listen(pop3): *:110 ssl_listen(default): *:993 ssl_listen(imap): *:993 ssl_listen(pop3): *:995 ssl_cert_file: /public/apache/ssl/combined.cert ssl_key_file: /public/apache/ssl/key.pem disable_plaintext_auth: no login_dir: /local/pkg/dovecot/data/var/run login_executable(default): /local/pkg/dovecot/root-dovecot-1.1.3/libexec/dovecot/imap-login login_executable(imap): /local/pkg/dovecot/root-dovecot-1.1.3/libexec/dovecot/imap-login login_executable(pop3): /local/pkg/dovecot/root-dovecot-1.1.3/libexec/dovecot/pop3-login login_user: nul-mail login_log_format_elements: [%p] %u %r %c login_greeting_capability(default): yes login_greeting_capability(imap): yes login_greeting_capability(pop3): no login_processes_count: 6 login_max_processes_count: 512 max_mail_processes: 1024 verbose_proctitle: yes first_valid_uid: 111 mail_location: mbox:~/:INBOX=/var/spool/mail/%u mail_full_filesystem_access: yes mail_executable(default): /local/pkg/dovecot/localmods/wrapper.imap mail_executable(imap): /local/pkg/dovecot/localmods/wrapper.imap mail_executable(pop3): /local/pkg/dovecot/localmods/wrapper.pop3 mail_plugin_dir(default): /local/pkg/dovecot/root-dovecot-1.1.3/lib/dovecot/imap mail_plugin_dir(imap): /local/pkg/dovecot/root-dovecot-1.1.3/lib/dovecot/imap mail_plugin_dir(pop3): /local/pkg/dovecot/root-dovecot-1.1.3/lib/dovecot/pop3 mail_log_prefix: %Ls[%p] %u, %r: imap_capability(default): IMAP4rev1 QUOTA SASL-IR SORT THREAD=REFERENCES MULTIAPPEND UNSELECT LITERAL+ IDLE CHILDREN NAMESPACE LOGIN-REFERRALS imap_capability(imap): IMAP4rev1 QUOTA SASL-IR SORT THREAD=REFERENCES MULTIAPPEND UNSELECT LITERAL+ IDLE CHILDREN NAMESPACE LOGIN-REFERRALS imap_capability(pop3): imap_client_workarounds(default): delay-newmail tb-extra-mailbox-sep imap_client_workarounds(imap): delay-newmail tb-extra-mailbox-sep imap_client_workarounds(pop3): pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh pop3_logout_format(default): top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_logout_format(imap): top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_logout_format(pop3): top=%t/%p, retr=%r/%b, del=%d/%m, size=%s, xfer=%i/%o auth default: cache_negative_ttl: 0 passdb: driver: shadow userdb: driver: passwd # source code for /local/pkg/dovecot/localmods/wrapper.imap # and /local/pkg/dovecot/localmods/wrapper.pop3 # follows: 8<---------------------------- cut here -------------------------->8 /* * wrapper.c -- login wrapper program for dovecot * * Steven Winikoff * 2008/01/31 * * Part of this program is based on code written by Sylvain Robitaille. * * The intention is twofold: * * 1) ensure that IMAP and POP sessions are registered in the * system's lastlog file * * 2) ensure that all IMAP and POP users have a valid login shell * * Rather than hack the code for the dovecot server directly, this use * of a wrapper is based on dovecot's intrinsic "post-login scripting" * facility; for details, see http://wiki.dovecot.org/PostLoginScripting */ #include <unistd.h> #include <stdlib.h> #include <string.h> #include <sys/types.h> #include <sys/stat.h> #include <lastlog.h> #include <fcntl.h> #include <pwd.h> #include <syslog.h> #include <errno.h> #include <time.h> #define STRLEN 1024+1 #define LASTLOG "/var/adm/lastlog" #define NEWSHELL "/local/paths/newshell" #define BLOCKSHELL "/local/paths/blocksh" #define REAL_IMAP_SERVER "/local/paths/dovecot-imap" #define REAL_POP3_SERVER "/local/paths/dovecot-pop3" #define REAL_IMAP_NAME "dovecot-imap" #define REAL_POP3_NAME "dovecot-pop3" #define LOGNAME "dovecot: wrapper" int valid_shell(char *); void update_lastlog(uid_t, char *, char *); /*-----------------------------------------------------------------------*/ int main(int argc, char **argv) { char service[STRLEN]; char server[STRLEN], server_name[STRLEN], *u, *rh; int unknown_service = 0, len; struct passwd *p; /** the service name we've been invoked to wrap is determined **/ /** by the last four characters of our own basename ("imap" or **/ /** "pop3"): **/ len = strlen(argv[0]); (void)strcpy(service, argv[0] + (len-4)); if (strcmp(service, "imap") == 0) { (void)strcpy(server, REAL_IMAP_SERVER); (void)strcpy(server_name, REAL_IMAP_NAME); } else if (strcmp(service, "pop3") == 0) { (void)strcpy(server, REAL_POP3_SERVER); (void)strcpy(server_name, REAL_POP3_NAME); } else { unknown_service = 1; } /** prepare to log: **/ openlog(LOGNAME, LOG_PID, LOG_LOCAL0); if (unknown_service) { syslog(LOG_INFO, "can't handle unknown service '%s'", service); exit(1); } /** $USER is the only way we can determine who called us: **/ if (! (u = getenv("USER"))) { syslog(LOG_INFO, "aborting: no value supplied for $USER"); exit(2); } /** likewise, $IP is our only source for the host we were called **/ /** from: **/ if (! (rh = getenv("IP"))) { syslog(LOG_INFO, "aborting: no value supplied for (remote host) $IP"); exit(3); } /** grab $USER's password file entry: **/ if (! (p = getpwnam(u))) { syslog(LOG_INFO, "aborting: can't find a passwd entry for %s", u); exit(4); } /** is this user blocked? **/ if (strcmp(p->pw_shell, BLOCKSHELL) == 0) { /** yes, so we're out of here: **/ syslog(LOG_INFO, "aborting: %s is blocked", u); exit(5); } /** okay, but is the user's shell recognized? **/ if (! valid_shell(p->pw_shell)) { syslog(LOG_INFO, "aborting: %s has invalid shell %s", u, p->pw_shell); exit(6); } /** update the user's lastlog entry: **/ update_lastlog(p->pw_uid, service, rh); /** now run the real program for the requested service: **/ syslog(LOG_INFO, "%s, %s, %s", service, u, rh); argv[0] = server_name; (void) execv(server, argv); /** if we're still here, execv() failed: **/ syslog(LOG_INFO, "execv(%s) FAILED (%s), %s, %s", server_name, strerror(errno), u, rh); return(7); } /*-----------------------------------------------------------------------*/ int valid_shell(char *s) /* * return 1 if s represents a valid login shell, or 0 otherwise * * for our purposes, "valid" means anything returned by getusershell(3), * or NEWSHELL as a special case */ { char *next_shell; /** a NULL pointer can't be a valid shell: **/ if (! s) return(0); /** NEWSHELL is always valid: **/ if (strcmp(s, NEWSHELL) == 0) return(1); /** okay, we have to consult /etc/shells: **/ while ((next_shell = getusershell()) != NULL) { if (strcmp(s, next_shell) == 0) { endusershell(); return(1); } } /** if we're still here, we don't have a valid shell: **/ endusershell(); return(0); } /*-----------------------------------------------------------------------*/ void update_lastlog(uid_t uid, char *service, char *remote_system) /* * records the user's activity in the system lastlog file. * * Sylvain Robitaille (using code borrowed from the ssh source) * * 1997/11/21 * 2000/07/31 (call with the uid as a parameter) * */ { int fd; struct lastlog ll; const char *lastlog = LASTLOG; /** initialize the lastlog structure: **/ memset(&ll, 0, sizeof(ll)); /** fill in the data: **/ ll.ll_time = time(NULL); strncpy(ll.ll_line, service, sizeof(ll.ll_line)); strncpy(ll.ll_host, remote_system, sizeof(ll.ll_host)); /** update the lastlog file: **/ if ((fd = open(lastlog, O_RDWR)) >= 0) { lseek(fd, (off_t)(uid * sizeof(ll)), 0); if(write(fd, &ll, sizeof(ll)) != sizeof(ll)) { syslog(LOG_INFO, "Could not write %.100s: %.100s", lastlog, strerror(errno)); } close(fd); } else { syslog(LOG_INFO, "Could not open %.100s: %.100s", lastlog, strerror(errno)); } } 8<---------------------------- cut here -------------------------->8 ________________________________________________________________________ Steven Winikoff | Concordia University | Doyle's Law: Montreal, QC, Canada | Expenditures shall rise smw(a)alcor.concordia.ca | automatically to absorb any http://alcor.concordia.ca/~smw | increased income.

2 1

[Dovecot] Unknown dict module: mysql
by Oli Schacher 05 Oct '08

05 Oct '08

Hi I'm trying to set up the dict/expiry plugins, but the dict server always tells me it can't find the modules although they should be there and compiled in. System is: Centos 5.2 64 bit, Using rpm from http://atrpms.net/dist/el5/dovecot/ dovecot --version 1.1.3 Relevant config: dict { quotadict = mysql:/etc/dovecot-dict-quota.conf expire = mysql:/etc/dovecot-dict-expire.conf } plugin { quota = dict:::proxy::quotadict quota_rule = *:storage=10M:messages=1000 quota_warning = storage=95%% /usr/local/bin/quotawarning.py 95 quota_warning2 = storage=75%% /usr/local/bin/quotawarning.py 75 acl = vfile:/etc/dovecot-acls expire = Trash 30 Trash/* 30 Spam 14 expire_dict = proxy::expire } cat /etc/dovecot-dict-quota.conf connect = host=localhost dbname=*** user=*** password=*** table = quota select_field = current where_field = path username_field = username Logoutput: Starting Dovecot Imap: ILoading modules from directory: /usr/lib64/dovecot/imap IModule loaded: /usr/lib64/dovecot/imap/lib01_acl_plugin.so IModule loaded: /usr/lib64/dovecot/imap/lib10_quota_plugin.so IModule loaded: /usr/lib64/dovecot/imap/lib11_imap_quota_plugin.so IModule loaded: /usr/lib64/dovecot/imap/lib20_expire_plugin.so IEffective uid=65534, gid=65534, home= IQuota root: name= backend=dict args=:proxy::quotadict Idict quota: user=dump-capability, uri=proxy::quotadict, enforcing=0 IQuota rule: root= mailbox=* bytes=10485760 (0%) messages=1000 (0%) IQuota warning: bytes=9961472 (95%) messages=0 (0%) command=/usr/local/bin/quotawarning.py 95 IQuota warning: bytes=7864320 (75%) messages=0 (0%) command=/usr/local/bin/quotawarning.py 75 When I try to use the dict (by moving mails via IMAP or by passing through the lda) I get: Oct 1 10:52:15 inet2 deliver(oli(a)terrabyte.me): Loading modules from directory: /usr/lib64/dovecot/lda Oct 1 10:52:15 inet2 deliver(oli(a)terrabyte.me): Module loaded: /usr/lib64/dovecot/lda/lib10_quota_plugin.so Oct 1 10:52:15 inet2 deliver(oli(a)terrabyte.me): Module loaded: /usr/lib64/dovecot/lda/lib20_expire_plugin.so Oct 1 10:52:15 inet2 deliver(oli(a)terrabyte.me): Module loaded: /usr/lib64/dovecot/lda/lib90_cmusieve_plugin.so [...] Oct 1 10:52:15 inet2 dovecot: dict: Unknown dict module: mysql Oct 1 10:52:15 inet2 dovecot: dict: Failed to initialize dictionary 'quotadict' Oct 1 10:52:15 inet2 deliver(oli(a)terrabyte.me): read(/var/run/dovecot/dict-server) failed: Remote disconnected Oct 1 10:52:15 inet2 deliver(oli(a)terrabyte.me): Internal quota calculation error I also ran the dict procy through strace to check where it searches for those modules, and I think it finds the correct files: strace ./dict 2>&1 | grep mysql -A 1 open("/usr/lib64/dovecot/dict/libdriver_mysql.so", O_RDONLY) = 8 read(8, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\27\0\0\0\0\0\0"..., 832) = 832 -- open("/usr/lib64/mysql/libmysqlclient.so.15", O_RDONLY) = 8 read(8, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\2\202\2178\0\0\0"..., 832) = 832 Could anyone give me a hint what I could be doing wrong? Thanks a lot, Oli

2 2

[Dovecot] Expunge working on folders, but not main mailbox
by Xev Gittler 05 Oct '08

05 Oct '08

I've recently installed dovecot, and while the behavior on folders is correct, the inbox cannot be expunged. This is 1.1.3 running on Fedora release 8 (Werewolf) on ext3 filesystems, using both thunderbird and squirrel clients. Any assistance would be appreciated. X # 1.1.3: /usr/local/etc/dovecot.conf info_log_path: /tmp/dovecot.log protocols: imap imaps pop3 pop3s disable_plaintext_auth: no login_dir: /usr/local/var/run/dovecot/login login_executable(default): /usr/local/libexec/dovecot/imap-login login_executable(imap): /usr/local/libexec/dovecot/imap-login login_executable(pop3): /usr/local/libexec/dovecot/pop3-login mail_location: mbox:~/Mail:INBOX=/var/spool/mail/%u mail_debug: yes mail_executable(default): /usr/local/libexec/dovecot/imap mail_executable(imap): /usr/local/libexec/dovecot/imap mail_executable(pop3): /usr/local/libexec/dovecot/pop3 mail_plugin_dir(default): /usr/local/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 auth default: verbose: yes passdb: driver: pam userdb: driver: passwd plugin: mail_log_events: all

3 3

[Dovecot] Bug in ACL Plugin
by Anton Zakatov 05 Oct '08

05 Oct '08

Hello! Names of groups should be stored in backend memory pool. --- acl-backend.c.old 2008-10-02 11:43:05.000000000 +0400 +++ acl-backend.c 2008-10-02 11:43:48.000000000 +0400 @@ -62,7 +62,7 @@ backend->groups = p_new(backend->pool, const char *, group_count); for (i = 0; i < group_count; i++) - backend->groups[i] = groups[i]; + backend->groups[i] = p_strdup(backend->pool, groups[i]); qsort(backend->groups, group_count, sizeof(const char *), i_strcmp_p); } With best regards, Anton Zakatov. E-mail: anton(a)abn.ru

2 1

[Dovecot] index matter
by ogu_yo＠yahoo.co.jp 05 Oct '08

05 Oct '08

Hi, I have a question about the following explanation; IndexFiles.txt ------------------------------------------------------ If index files are missing, Dovecot creates them automatically when the mailbox is opened. ------------------------------------------------------ Are they made based on which information? Thanks. Yoko -------------------------------------- Enjoy MLB with MAJOR.JP! Ichiro, Matsuzaka, Matsui, and more! http://pr.mail.yahoo.co.jp/mlb/

2 2

[Dovecot] Any suggestions for backing up an imap server and whould maildir or dbox be better than mbox?
by Götz Reinicke 04 Oct '08

04 Oct '08

Hi, we run a Red Hat EL 5.2 mailserver with dovecot as the imap server. Mails are stored in mbox format and there are about 134GB of mail. At the moment users copy their importent mail to their workstation accounts wich are backed up nightly. What are your suggestions to back up the mails not copied? Thanks for any comments. BTW: Dose changing the mailbox format from mbox to Maildir or dbox dose have any advantages? Best regards Götz Reinicke -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke(a)filmakademie.de Filmakademie Baden-Württemberg GmbH Mathildenstr. 20 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzende des Aufsichtsrats: Prof. Dr. Claudia Hübner Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium Geschäftsführer: Prof. Thomas Schadt

5 5

[Dovecot] Feature wish: "Virtual" POP3 folder with IMAP
by jbdovecot＠fcgh.net 04 Oct '08

04 Oct '08

Hallo, is it possible to implement a "flat folder view" for POP3 users? The problem is that POP3 only knows one folder: INBOX. Now, if a user logs in via POP3, he won't see messages that live outside the INBOX folder - this could be e.g. a *SPAM*-flagged message moved to another folder via Sieve/LDA/other mechanism. What about adding a feature `pop3_remap_folders` to virtually place *all* messages spread across different folders inside INBOX, only for the POP3 session, and without impact on the actual folder structure as seen thru IMAP? I see some issues though: - How would SENT and TRASH be handled? These special folders shouldn't be part of the game. - What happens if the POP3 client deletes a message, which is the default behavior of Outlook and friends? Proposed logic: really delete message if not logged in via IMAP since ($filemtime_of_message - $user_configurable_amount_of_seconds), else gracefully ignore client's delete request. This *could* become a problem if quotas are enabled, but then again it should be the admin's decision to offer this feature to his users. - Message IDs: Would the above Delete-only-if workaround confuse some mail clients and make them download the same messages over and over? - Perhaps another way: create a separate POP3 directory inside the mailbox, only used by dovecot-pop3. Inside reside symlinks to the actual messages spread across different IMAP folders, which can safely be deleted by a POP3 client and also following the real-delete logic described above. The benefit of such a virtual folder remapping would be great for systems also using webmail and/or Sieve. Regards, James -- jbdovecot(a)fcgh.net

7 6

[Dovecot] Importing Microsoft PST into Dovecot Imap
by Ilo Lorusso 04 Oct '08

04 Oct '08

Hi , I think the question has been asked before ... but I need to be adviced on what would be the best way to import microsoft PST's into Dovecot.. ? What software can I use.. can a anyone make any recommendations? even if one has to spend some money on some commecial software.. but it has to work.. so Im looking for someone who has tried from experience as ive tried some freeware or trial software off the internet with little or no success. Thanks and regards... Ilo

3 2