- dovecot - dovecot.org

[Dovecot] Looking for suggestions: How to strip attachments from mails
by Patrick Nagel 20 May '08

20 May '08

Hi, I know this is not 100% on-topic, but I'll try anyway... I'm looking for a way to strip attachments from incoming mails on the server. The attachments should be stored on a file server (where users have access via SAMBA) and only a link to the file (UNC path) should remain in the mail body. This is to prevent the mail storage from filling up with a large amount of big mails where at the same time the 'payload' (attached file) is not conveniently accessible by the users. The current setup is postfix / dovecot deliver / dovecot (with sieve plugin). I'm considering piping the mails through something like mimeStrip.pl (http://freshmeat.net/projects/mimestrip.pl/) but therefore I'd probably need to bring procmail/maildrop into the game, right? Or are there other (better) ways to accomplish this? Patrick. -- STAR Software (Shanghai) Co., Ltd. http://www.star-group.net/ Phone: +86 (21) 5427 7799 x 826 Fax: +86 (21) 6485 0071 PGP key: https://stshacom1.star-china.net/keys/patrick_nagel.asc Fingerprint: E09A D65E 855F B334 E5C3 5386 EF23 20FC E883 A005

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[Dovecot] RFC 3516 - IMAP4 Binary Content Extension
by Anton Yuzhaninov 20 May '08

20 May '08

Is Binary Content Extension (rfc3516) support planned? -- WBR, Anton Yuzhaninov

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[Dovecot] child process killed with signal 11
by Zbigniew Szalbot 20 May '08

20 May '08

Hello, Today I have noticed such log entries May 19 23:57:32 relay dovecot: child 40857 (imap) killed with signal 11 I am using v. 1.0.13. Any idea what can be wrong? Dovecot does not die. It seems child processes are being killed. Thanks! -- Zbigniew Szalbot www.lc-words.com

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[Dovecot] messages downloading repeatedly to mozilla/seamonkey pop3 client
by Ben Julian 20 May '08

20 May '08

Hello Dovecot List, I am a bit of a sysadmin novice and this is my first time emailing, so please let me know if I have left some critical information out. I am supporting a small office network supported primarily by linux servers. All of my users are using dovecot as a pop3 daemon on a centOS 5 box, no IMAP users. Seven users are running outlook 2003 on windows XP, two users are running thunderbird on ubuntu, two are running evolution on ubuntu, and one is running mozilla seamonkey on XP. Emails to the mozilla/seamonkey user are downloading multiple times, but not to any of the other users. A typical maillog report following this user's mail client pop3 login: Mar 3 10:37:00 servername dovecot: pop3-login: Login: user=<user>, method=PLAIN, rip=::ffff:192.168.99.13, lip=::ffff:192.168.99.4 Mar 3 10:37:00 servername dovecot: POP3(user): mbox sync: UID inserted in the middle of mailbox /var/mail/user (84873 > 84872, seq=2, idx_msgs=3) Mar 3 10:37:01 servername dovecot: POP3(user): mbox sync: UID inserted in the middle of mailbox /var/mail/user (84877 > 84872, seq=2, idx_msgs=4) Mar 3 10:37:01 servername dovecot: POP3(user): Disconnected: Logged out top=0/0, retr=1/3364, del=1/1, size=3347 Things I've tried: *adding the following lines to dovecot.conf: protocol pop3 { pop3_uidl_format = %08Xu%08Xv pop3_client_workarounds = outlook-no-nuls oe-ns-eoh } *deleting the user's homedir mail directory (including all dovecot index files) *restarting dovecot *changing mail clients: tried outlook express, netscape 4.8, thunderbird on user's PC *restarting the server All changes resulted in only a brief (1-2hr) cessation of the problem. I've subscribed for a month or so now and searched the archives, but if I missed a solution to this in there, I apologize. Thanks, Ben Julian

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[Dovecot] Webmail Recommendation
by Peter Sparkes 19 May '08

19 May '08

Hi, I want to install webmail. I am using Dovecot with Exim4. Recommendations requested please. Thanks Peter Sparkes

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[Dovecot] Fixed a Duplicate?
by Nigel Allen 19 May '08

19 May '08

Greetings We have recently switched from mbox to Maildir so that we can implement symlinks for a large email account that is shared (partially) between some 20 or so users. The setup is dovecot-1.0.3-6.fc6, procmail-3.22-17.1, sendmail-8.13.8-2. Procmail has a single recipe in /etc/procmailrc that simply says "DEFAULT=$HOME/Maildir/". The problem is that I am seeing a lot of blank emails being created. For exaample, every time I open a folder from this shared account, I get either one or two emails being created on the spot. The are /always/ created with the current date and time stamp (i.e. now) and at the same time a tail -f of maillog shows something like this: > May 19 09:10:05 sydsrv56 dovecot: IMAP(plans): Fixed a duplicate: > dovecot-shared:2, -> 1211152205.P10039Q1.sydsrv56 The only thing that appears to change is the last modified date and time of the two files, dovecot.index.log and dovecot.index.cache. Should I be maintaining separate index files or lock files for each user in this shared account? Currently the Maildir is shared and has the g+s bit set. Any ideas where I can start looking would be appreciated. Rgds Nigel. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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[Dovecot] compile troubles - stat.mtim - 1.1hg
by Daniel Black 18 May '08

18 May '08

having trouble compiling dovecot-1.1hg latest pull I'm amost thinking _GNU_SOURCE needs to be defined as its built to work Any suggestions welcome. make[4]: Nothing to be done for `all'. make[4]: Leaving directory `/home/dan/software_projects/dovecot-1.1/src/lib-storage/list' Making all in index make[4]: Entering directory `/home/dan/software_projects/dovecot-1.1/src/lib-storage/index' Making all in maildir make[5]: Entering directory `/home/dan/software_projects/dovecot-1.1/src/lib-storage/index/maildir' gcc -DHAVE_CONFIG_H -I. -I../../../.. -I../../../../src/lib -I../../../../src/lib-mail -I../../../../src/lib-imap -I../../../../src/lib-index -I../../../../src/lib-storage -I../../../../src/lib-storage/index -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -Wstrict-aliasing=2 -I/usr/kerberos/include -MT maildir-uidlist.o -MD -MP -MF .deps/maildir-uidlist.Tpo -c -o maildir-uidlist.o maildir-uidlist.c maildir-uidlist.c: In function 'maildir_uidlist_update_hdr': maildir-uidlist.c:322: error: request for member 'st_mtim' in something not a structure or union make[5]: *** [maildir-uidlist.o] Error 1 make[5]: Leaving directory `/home/dan/software_projects/dovecot-1.1/src/lib-storage/index/maildir' make[4]: *** [all-recursive] Error 1 make[4]: Leaving directory `/home/dan/software_projects/dovecot-1.1/src/lib-storage/index' make[3]: *** [all-recursive] Error 1 make[3]: Leaving directory `/home/dan/software_projects/dovecot-1.1/src/lib-storage' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/dan/software_projects/dovecot-1.1/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/dan/software_projects/dovecot-1.1' fgrep HAVE_STAT config.h /* #undef HAVE_STATFS_MNTFROMNAME */ /* #undef HAVE_STATVFS_MNTFROMNAME */ #define HAVE_STAT_XTIM /* #undef HAVE_STAT_XTIMESPEC */ from config.log configure:28085: checking if struct stat has st_?tim timespec fields configure:28117: gcc -c -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -Wstrict-aliasing=2 conftest.c >&5 conftest.c: In function 'main': conftest.c:104: warning: unused variable 'x' configure:28123: $? = 0 configure:28134: result: yes configure:28149: checking if struct stat has st_?timespec fields configure:28181: gcc -c -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -Wstrict-aliasing=2 conftest.c >&5 conftest.c: In function 'main': conftest.c:105: error: 'struct stat' has no member named 'st_mtimespec' conftest.c:105: warning: unused variable 'x' configure:28187: $? = 1 configure: failed program was: Portage 2.1.4.4 (default-linux/amd64/2007.0, gcc-4.2.3, glibc-2.6.1-r0, 2.6.22-vs2.2.0.7-gentoo x86_64) ================================================================= System uname: 2.6.22-vs2.2.0.7-gentoo x86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ Timestamp of tree: Sat, 17 May 2008 22:15:01 +0000 distcc 2.18.3 x86_64-pc-linux-gnu (protocols 1 and 2) (default port 3632) [enabled] app-shells/bash: 3.2_p33 dev-java/java-config: 1.3.7, 2.1.6 dev-lang/python: 2.4.4-r9 dev-python/pycrypto: 2.0.1-r6 sys-apps/baselayout: 1.12.11.1 sys-apps/sandbox: 1.2.18.1-r2 sys-devel/autoconf: 2.13, 2.61-r1 sys-devel/automake: 1.4_p6, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1 sys-devel/binutils: 2.18-r1 sys-devel/gcc-config: 1.4.0-r4 sys-devel/libtool: 1.5.26 virtual/os-headers: 2.6.23-r3 features.h #ifdef _GNU_SOURCE # define _BSD_SOURCE 1 #endif .... #if defined _BSD_SOURCE || defined _SVID_SOURCE # define __USE_MISC 1 #endif sys/stat.h includes bits/stat.h #include <features.h> .... struct stat { .... #ifdef __USE_MISC /* Nanosecond resolution timestamps are stored in a format equivalent to 'struct timespec'. This is the type used whenever possible but the Unix namespace rules do not allow the identifier 'timespec' to appear in the <sys/stat.h> header. Therefore we have to handle the use of this header in strictly standard-compliant sources special. */ struct timespec st_atim; /* Time of last access. */ struct timespec st_mtim; /* Time of last modification. */ struct timespec st_ctim; /* Time of last status change. */ -- Daniel Black -- Proudly a Gentoo Linux User. Gnu-PG/PGP signed and encrypted email preferred http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x76677097 GPG Signature D934 5397 A84A 6366 9687 9EB2 861A 4ABA 7667 7097

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[Dovecot] Postfix & Dovecot LDA
by Jochen Schulz 18 May '08

18 May '08

Hi, before I start to write a lengthy email about something that isn't really possible anyway: can I make Postfix use Dovecot's LDA and start it with different user IDs? My scenario: Dovecot authenticates users for Postfix and itself using Postgresql. Mails for two domains should be stored under /srv/<domain>/<user> (which is the location returned by my user_sql query and mail_location). When my clients login (with usernames of the form 'user@domain'), Dovecot creates/opens the correct mailboxes for them, but I can't get LDA to deliver to these mailboxes. Whatever I try, I am always running into some kind of permission problems (either for the mailboxes, or for auth_socket). I want to use a unique UID for every virtual domain, so I guess LDA needs to have permissions for every corresponding mailbox *and* Dovecot's auth_socket_path. Is there a good solution for this which doesn't involve severe security implications? J. -- If all my friends had Playstations I would buy a Nintendo to prove my individuality. [Agree] [Disagree] <http://www.slowlydownward.com/NODATA/data_enter2.html>

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[Dovecot] problem about mbox with quota
by Zhang Huangbin 18 May '08

18 May '08

Hi, all. Does mbox format support quota? I got this error in log file: dovecot: May 18 02:10:36 Error: POP3(www(a)a.cn): Unknown quota backend: storage=10240 How can i solved it? Thanks very much. :) My dovecot configuration: # /etc/dovecot.conf log_path: /var/log/dovecot.log protocols: pop3 pop3s imap imaps ssl_cert_file: /etc/pki/dovecot/certs/dovecotCert.pem ssl_key_file: /etc/pki/dovecot/private/dovecotKey.pem 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 mail_location: mbox:/%Lh/%Ld/%Ln:INBOX=/%Lh/%Ld/%Ln mbox_write_locks: dotlock fcntl mbox_min_index_size: 10240 mbox_very_dirty_syncs: 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 pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh auth default: mechanisms: plain login user: vmail passdb: driver: sql args: /etc/dovecot-mysql.conf userdb: driver: sql args: /etc/dovecot-mysql.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: 432 user: vmail group: vmail # /etc/dovecot-mysql.conf driver = mysql default_pass_scheme = CRYPT connect = host=127.0.0.1 dbname=vmail user=vmail password=6737$11626@27301!17044&11769*16758)17720 password_query = SELECT password FROM mailbox WHERE username='%u' AND active='1' user_query = SELECT 2000 AS uid, 2000 AS gid, "/home/vmail" AS home, maildir, CONCAT('storage=',quota) AS quota FROM mailbox WHERE username='%u' AND active='1' -- Best Regards. Zhang Huangbin - OpenBSD 4.2 -release, i386. - RHEL 5.1 Client

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[Dovecot] Security Hole in 1.0.13?
by Lawrence Sheed 18 May '08

18 May '08

I'm running 1.0.13 If I run dovecot for a while, I see a /var/run/dotvecot folder created with the following: drwxr-xr-x 3 root root 4096 2008-05-18 13:30 dotvecot drwxr-xr-x 3 root root 4096 2008-05-18 13:47 . drwxr-xr-x 18 root root 4096 2008-05-18 13:47 .. srw------- 1 root root 0 2008-05-18 13:47 auth-worker.15138 srwxrwxrwx 1 root root 0 2008-05-18 13:47 dict-server drwxr-x--- 2 root dovecot 4096 2008-05-18 13:47 login -rw------- 1 root root 6 2008-05-18 13:47 master.pid It appears to be created by imap-login I've tried removing any dovecot remnants and reinstalling from the 1.0.13 tar.gz from the site. After starting dovecot again after a few minutes the files appear. The processes are running something on 6243 and 6244 (Presumably an exploit / login) I have iptables setup to only allow existing ports in/out so I think thats saved me so far. I've switched to courier-imap in the interim. Anyone want to assist in finding out how they are getting in? Definitely dovecot related. If I don't run dovecot, seems secure. As soon as I run dovecot, after a few minutes - rooted... dovecot.conf cat /etc/dovecot/dovecot.conf base_dir = /var/run/dotvecot protocols = imap imaps listen = * disable_plaintext_auth = no shutdown_clients = yes syslog_facility = local7 #<-- Ensure this is set up in syslog conf ssl_disable = no login_max_processes_count = 128 login_max_connections = 256 login_greeting = K-Tex IMAP Server # <-- CUSTOMISE FORYOUR SITE login_process_size = 64 login_process_per_connection = yes login_processes_count = 16 ssl_cert_file = /var/qmail/control/servercert.pem # /usr/local/etc/ssl/ italy1-cert.pem ssl_key_file =/var/qmail/control/clientcert.pem # /usr/local/etc/ssl/ italy1.pem first_valid_uid = 89 first_valid_gid = 89 protocol imap { listen = *:143 ssl_listen = *:993 #mail_plugins = quota imap_quota #login_greeting_capability = no mail_plugin_dir = /usr/local/lib/dovecot/imap imap_client_workarounds = outlook-idle } auth_process_size = 512 auth_cache_size = 512 auth_cache_ttl = 3600 auth default { mechanisms = plain # vpopmail authentication passdb vpopmail { #args = } # vpopmail userdb vpopmail { } user = root } dict { #quota = mysql:/etc/dovecot-dict-quota.conf } plugin { quota = maildir } namespace private { prefix = INBOX. inbox = yes }

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