September 2010 - dovecot

[Dovecot] Segfault on dovecot 2.0.1 w/ACLs
by Michael M. Slusarz 02 Sep '10

02 Sep '10

* PREAUTH [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT IDLE CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS ACL RIGHTS=texk] Logged in as slusarz 5 LIST (SUBSCRIBED) "" (*) RETURN (SUBSCRIBED) * LIST (\Subscribed) "." "INBOX" [...] * LIST (\Subscribed) "." "Mileage Plus" Program received signal SIGSEGV, Segmentation fault. 0x00007ffff6d0cd61 in ?? () from /usr/lib/dovecot/modules/lib01_acl_plugin.so (gdb) bt full #0 0x00007ffff6d0cd61 in ?? () from /usr/lib/dovecot/modules/lib01_acl_plugin.so No symbol table info available. #1 0x00007ffff7b40eea in mailbox_list_iter_next () from /usr/lib/dovecot/libdovecot-storage.so.0 No symbol table info available. #2 0x000000000040b209 in ?? () No symbol table info available. #3 0x000000000040c030 in cmd_list_full () No symbol table info available. #4 0x000000000040f9dd in ?? () No symbol table info available. #5 0x000000000040fab2 in ?? () No symbol table info available. #6 0x000000000040fcfd in client_handle_input () No symbol table info available. #7 0x000000000041059f in client_input () No symbol table info available. #8 0x00007ffff78d8e85 in io_loop_handler_run () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #9 0x00007ffff78d80f8 in io_loop_run () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #10 0x00007ffff78c76f3 in master_service_run () from /usr/lib/dovecot/libdovecot.so.0 No symbol table info available. #11 0x0000000000418791 in main () No symbol table info available. # 2.0.1: /etc/dovecot/dovecot.conf # OS: Linux 2.6.35-ARCH x86_64 plugin { acl = vfile quota = maildir:User quota quota_rule = *:storage=10485769 } Can verify that disabling acl makes the segfault go away. michael

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[Dovecot] [pigeonhole] Libraries not linked correctly
by pyther 02 Sep '10

02 Sep '10

Hello All I am trying to compile and use pigeonhole and I am experiencing the same exact problem that is stated here: http://dovecot.org/pipermail/dovecot/2010-August/051859.htm [root@mongo dovecot-2.0-pigeonhole-build]# ldd /usr/lib/dovecot/managesieve-login linux-gate.so.1 => (0xb777e000) libdovecot-login.so.0 => not found libdovecot.so.0 => not found libc.so.6 => /lib/libc.so.6 (0xb7622000) /lib/ld-linux.so.2 (0xb777f000) lt does not seem as if -Wl,-rpath -Wl,/usr/local/lib/dovecot is being appended to gcc -std=gnu99 -march=i686 -mtune=generic -O2 -pipe -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -Wstrict-aliasing=2 -o managesieve-login client.o client-authenticate.o managesieve-login-settings.o managesieve-proxy.o ../../src/lib-managesieve/libmanagesieve.a -ldovecot-login -L/usr/lib/dovecot -ldovecot -lrt ^^See: http://dovecot.org/pipermail/dovecot/2010-August/051907.html However, my lack of programming knowledge and skills prohibit me from trying to fix this myself. I am hoping some kind soul would be nice enough to fix it. Thank you!

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[Dovecot] Dovecot - some more optimisations
by Len7hir 02 Sep '10

02 Sep '10

I did some more optimisation. Most performance hit in Dovecot do "for loop" in string operations. In one case (in message-parser.c) "for loop" has another "for" inside with the same variable used as iterator. This case is very hard to optimise by compiler. I do changes only in top functions listed in oprofile. Maybe I do more in future. Code was analysed and tested but it's hard to generate all cases. It's working well in production server (I'm monitoring). In istream-crlf.c I've changed one thing. When destination buffer is full after '\r' addition (to dest), It didn't skip '\n' in source buffer. I think this was buggy in earlier code, and '\n' was skipped (this piece of code is used very rare). Please check this out. This can help in huge e-mail systems :P And another problem. Why You use safe_memset instead of memset? Now this function have the largest impact in Dovecot performance. Another on list is t_push. Regards, Len7hir

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[Dovecot] Passdb filter question - LDAP.
by Lauro Costa G. Borges 01 Sep '10

01 Sep '10

dovecot 1:1.2.9-1ubuntu6.1 ---- I don't know if I can solve this problem with Dovecot, or if it's an LDAP matter. I'm authenticating users with saslauthd/LDAP, and using Dovecot LDA. ---- dovecot.conf passdb ldap { args = /etc/dovecot/dovecot-ldap-passdb.conf } userdb prefetch { } # The userdb below is used only by deliver. userdb ldap { args = /etc/dovecot/dovecot-ldap-userdb.conf } ----- ----- dovecot-ldap-passdb.conf search base is dc=example,dc=org pass_filter = (&(objectclass=brPerson)(objectclass=inetOrgPerson)(mail=%u)) pass_attrs = userPassword=password,%u=user ----- ----- dovecot-ldap-userdb.conf search base is ou=%d,ou=mail,ou=services,dc=example,dc=org user_filter = (&(objectclass=nisMailAlias)(cn=%n)) user_attrs = rfc822MailMember=user,EmailQuota=quota_rule=*:storage=%$M ----- Here is how the LDAP tree is: ou=mail,ou=services,dc=example,dc=org ou=subdomain1.example.org,ou=mail,ou=services,dc=example,dc=org example entry under "ou=subdomain1.example.org" --- dn: cn=userfoo,ou=subdomain1,ou=mail,ou=services,dc=example,dc=org cn: userfoo edupersonprincipalname: WEMHVDEA-FUAOBAAA(a)example.org (some sort of unique identifier) emailquota: 512 objectclass: eduPerson objectclass: nisMailAlias rfc822mailmember: userfoo(a)subdomain1.example.org --- ou=people,dc=example,dc=org dn: uid=29859085900(a)example.org,ou=people,dc=example,dc=org uid: 29859085900(a)example.org eduPersonPrincipalName: WEMHVDEA-FUAOBAAA(a)example.org userPassword: {MD5}6ZoYxCjLONXyYIU2eJIuAw== objectClass: person objectClass: inetOrgPerson objectClass: eduPerson mail: 29859085900(a)example.org mail: userf(a)director.example.org mail: userfoo(a)dptoxyz.example.org mail: userfoo(a)subdomain1.example.org When delivering email, it must search under "services", for the proper "rfc822mailmember", which is the mailbox. When authenticating, there's where my problem is, I can't have ALL user e-mails under "ou=people", maybe just 1, so I need to search under "ou=services", there I have all user email addresses, and by using "edupersonPrincipalName", I want to point to the right location under "ou=people", where I have the user password. edupersonPrincipalName is the attribute present under "ou=services" and "ou=people" that links the entries. I tried to do it by changing passdb filter file, like this: pass_filter = (&(objectclass=eduPerson)(mail=%u)) pass_attrs = userPassword=userdb_password,eduPersonPrincipalName=userdb_user It works, but changes the username to the value of "edupersonprincipalname", and this changes the mailbox name. Dovecot accesses the wrong mailbox then (something like 29859085900(a)example.org) * My question is: is it possible to change the passdb filter, so it searches for somemail(a)sub1.example.org (under ou=services), then it gets the value of "edupersonprincipalname" (the unique identifier, present under "services" and "people"), and with that value, it looks under "people" the person with that identifier and validates the password. It would be a filter inside a filter, sort of. thanks, and sorry if this is a little offtopic. ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

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[Dovecot] Filtering virtual mailbox using other virtual mailbox?
by Giovanni Giorgi 01 Sep '10

01 Sep '10

Hi All, my name is Giovanni and I am new to dovecot. I have installed version 2.0 the past week and I find it very powerful. I have started to play with the virtual mailbox plugin. I was unable to do a virtual mailbox filtering out the contents of other mailbox, for instance I have a virtual/spam mailbox which filter out all the spam thanks to spamassassin. This mailbox is virtual, its description is INBOX -Trash -Trash/* -Junk subject SPAM I'd like to do a simple virtual/ham mbox using this dovecot-virtual INBOX -virtual/spam to: jj(a)gioorgi.com but it seems not working. it does not filter the spam. It is possible to do such thing, or I am trying to do something not possible at all? Thank you (\__/) (='.'=) (")_(") Giovanni Giorgi jj(a)gioorgi.com

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[Dovecot] Shared mail folders
by Ian macdonald 01 Sep '10

01 Sep '10

Hi All, I am trying to configure shared mail folders and have made some progress, however I am just stuck lack of experience I think. I have ubuntu 10.04 postfix and dovecot (working well) using dovecot deliver as LDA thunderbird reports that folders are shared flat file database has the shares My problem is I am missing something on the userdb I wish to use auth passwd as it is a small system of 20 system users I have the following from dovecot -n auth default: passdb: driver: pam userdb: driver: passwd I get the following IMAP(peter): userdb lookup: connect(/var/run/dovecot/auth-master) failed: No such file or directory dovecot: IMAP(peter): Namespace 'shared/': Could not lookup home for user ian I am lost and would be grateful for any help all the best Ian

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[Dovecot] Virtual plugin speedup?
by Giovanni Giorgi 01 Sep '10

01 Sep '10

Hi, I am using the virtual plugin on divecot2. It seems a bit slow when accessing from my iPhone. How can I speed it up? The full text search plugin can help? Inviato da iPhone

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[Dovecot] Help with Public Folder Configuration
by Joy 01 Sep '10

01 Sep '10

Dear All, I am trying to use Public Folder feature of dovecot but having some confusion with the configuration part as well as understanding the same. Here is output of doveconf -n which i think required to help me - mail_location = maildir:~/Maildir namespace { inbox = yes location = prefix = separator = . type = private } namespace { list = children location = maildir:/var/mail/public prefix = Public. separator = . subscriptions = no type = public } plugin { acl = vfile:/usr/local/dovecot/dovecot-acl/acl } after making this configuration i also created subfolder inside /var/mail/public which looks like following:- mail1:~# less /var/mail/public/ dovecot-acl-list .Public/ mail1:~# less /var/mail/public/.Public/Maildir/ cur/ new/ tmp/ I have changed default permission to [ chown -R vmail:vmail /var/mail ] on base public folder. Now I am able to see the public folder from webmail as well as from thunderbird but no display for .Public folder. I am expecting that .Public folder will be visible to all but no one will be allowed to delete and make any change in that folder, I am also using global ACL in my configuration. Please let me know what i am doing wrong because not getting any error in log, Correct me if i am understanding wrong. Thanks

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[Dovecot] Broken SELECT ""/EXAMINE ""
by Michael M. Slusarz 01 Sep '10

01 Sep '10

a EXAMINE INBOX [...] a OK [READ-ONLY] Select completed. a EXAMINE "" a NO Empty mailbox name. [Should be in authenticated mode with no active mailbox. But...] a STATUS INBOX (UIDVALIDITY) * STATUS "INBOX" (UIDVALIDITY 1255685337) a OK [CLIENTBUG] Status on selected mailbox completed. a UNSELECT a OK Unselect completed. a STATUS INBOX (UIDVALIDITY) * STATUS "INBOX" (UIDVALIDITY 1255685337) a OK Status completed. Seeing a whole bunch of the CLIENTBUGs in the logs since IMP uses imapproxy and relies on the proxy to unselect the mailbox when a LOGOUT is caught. Thus, when we rebuild the connection on the next page connection, we assume that there is no active mailbox (we actually use LIST-STATUS to do folder polling, but we still use STATUS when we only need data on a single mailbox). imapproxy *should* really be using UNSELECT, but that looks like a different (imapproxy) bug. michael

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[Dovecot] 2.0 migration weirdnesses: logs and hang
by Kyle Wheeler 01 Sep '10

01 Sep '10

Hello, I'm testing out an upgrade to dovecot 2.0 from 1.2.11, and I've stumbled across two weirdnesses that I need help with. First, I'm only getting one log message: master: Info: Dovecot v2.0.0 starting up After that, while I can connect, log in, read mail, etc., no further log messages are created. I have log_path set to /dev/stderr, and no syslog_facility setting, so... what could be going wrong? Second, when I create a new mailbox and copy messages across namespaces, dovecot hangs. The mailbox is created and the messages are copied successfully, but dovecot simply stops responding. I can't even logout! I'm attaching my config file, if it helps. ~Kyle -- The effect of liberty to individuals is, that they may do what they please; we ought to see what it will please them to do, before we risk congratulations. -- Edmund Burke

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