February 2010 - dovecot

[Dovecot] antispam plugin
by Dan Swartzendruber 24 Feb '10

24 Feb '10

First off, I have to say I really like the antispam plugin. I am running a (relatively) new freebsd 8.0 server with postfix/dovecot/dspam/squirrelmail and it works great. Create a SPAM folder and tell the dovecot antispam plugin to use INBOX.SPAM as the spam folder and drag messages from INBOX to the spam folder and they are trained as spam. Here is the problem though: after training dspam for a couple of weeks, I had a couple hundred messages in the SPAM folder, so I selected them and hit the DELETE button and they were gone. Except they weren't. I had forgotten that by default squirrelmail moves deleted messages to a Trash folder under INBOX. So the messages were moved out of the SPAM folder, resulting in them being retrained as ham. Oops :( I then hit the purge link in squirrelmail and the messages were forever gone, so I couldn't rectify my gaffe. I have temporarily reconfigured squirrelmail to delete messages outright rather than save them in the Trash folder, but I don't like that as a long-term solution. What occurred to me is this: the current algorithm is: if message moves from * => SPAM, it is trained as spam, if it moves from SPAM => *, it is trained as ham. It would be nice if you could elaborate on that such that the ham rule was "if message moves from SPAM to X, it is ham" (and in my case, I would defined X as INBOX. Thoughts?

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[Dovecot] OT: best linux imap client for dovecot
by Axel Thimm 24 Feb '10

24 Feb '10

Hi, I'm a long term dovecot user, packager and believer, but on the other side of the wire I've been a mutt user for longer than I can think. Which modern email client under Linux is working best with dovecot? I just did a grep on User-Agent:/X-Mailer: on my dovecot archive (which goes back to 2004) and found that the top ten are: 28% Thunderbird 25% Evolution 9% Apple Mail 9% Mutt 5% Mozilla 3% KMail 2% Outlook 2% SquirrelMail 1% Alpine 1% Mulberry ... So it looks like most Linux people here like to use Thunderbird and Evolution. This is not a my-email-client-is-better-than-your-email-client thread, I just want to know which client(s) make proper use of imap features for fast searches/copies/deletions etc. Thanks! -- Axel.Thimm at ATrpms.net

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[Dovecot] IMAP permissions?
by Larry Crouch 24 Feb '10

24 Feb '10

Hello, Can Dovecot allow some users access to IMAP functionality while forcing other users to use POP3 only? -- Larry Crouch Alpha-USA

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[Dovecot] namespaces/virtual folder & archiving
by fernando＠dfcom.com.br 24 Feb '10

24 Feb '10

Hi, I was following the earlier namespaces discussion and I would like to repost a doubt. I need to have some kind of archiving, it means, store old messages into a cheap storage. But I couldn´t think any other solution than symlinks. Then, I thought about store 'Sent Items' (as having old messages and less acessed). But I also needed to do with nfs and symlinks. So, it comes the namespaces discussion and a little brainstorm: 1) Could I have a namespace only with INBOX and the personal folders (drafts, sent items, etc) in another one - and those would be stored in huge sata disks while inbox in 300g sas disks ? 2) Could I maintain the prior configuration, but let the second namespace hidden and having the inbox subfolders (or any specific as sent items) as virtual folder ? I don´t know if this makes sense... 3) Could I have my normal Inbox and a folder (in another disk - ex. huge sata one) storing files older than 30 days and through virtual folders join these messages in a common virtual INBOX while acessing imap or pop3 ? What do you thing, would you have another better approach ? Best Regards, Fernando

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[Dovecot] Installation directories layout question
by Hunny Bunny 24 Feb '10

24 Feb '10

Hello folkz, I'm trying to compile and install Dovecot 1.2.10 from sources. When I execute: ./configure --prefix=/usr/local/dovecot make make install I reasonably expect to find dovecot libraries in /usr/local/dovecot/lib but it puts them into /usr/local/dovecot/lib/dovecot. It add this extra 'dovecot' at the end of almost every installation path. Could somebody please clarify what extra configuration parameters should be set to make to change this strange dovecot installation directories layout. Thank you very much in advance, Alex

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[Dovecot] dovecot-2 new notify plugin
by Nikita Koshikov 24 Feb '10

24 Feb '10

Hello list, Can someone point me to documentation, if such available, about new dovecot notify plugin or describe here what it for and how to use it.

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[Dovecot] body search very slow since upgrade from 1.0.15 to 1.2.10
by Stan Hoeppner 24 Feb '10

24 Feb '10

Did you mislead me Timo? You said search in 1.1+ is faster than 1.0. I'm seeing approximately 20x *slower* search times in 1.2.10. Via Thunderbird, a full body search of my 11,000+ message IMAP folder hosted by 1.0.15 used to take less than 10 seconds. Since upgrading to 1.2.10 the search is taking over 3 minutes, the imap process servicing the client pegging one CPU at 100% for the duration of the search. Here's the mbox file: -rw------- 1 stan stan 50M Feb 23 07:41 1-Spam-l Doing the same search via grep results in a time of: real 0m0.361s user 0m0.204s sys 0m0.140s grep takes less than half a second, yet dovecot 1.2.10 takes 3 minutes for the same search? Actually grep is searching the entire file including headers, so it's doing more work than the imap process. Something is *SERIOUSLY* wrong here. Did I somehow nerfed something in dovecot.conf that's causing this? I deleted all the index files as per the upgrade instructions. However, checking the directories shows they're apparently rebuilt: [08:09:15][root@greer]/home/stan/mail/.imap/1-Spam-l$ la total 28M drwx------ 2 stan stan 4.0K Feb 23 07:41 . drwx------ 35 stan stan 4.0K Feb 15 11:14 .. -rw------- 1 stan stan 358K Feb 23 07:18 dovecot.index -rw------- 1 stan stan 27M Feb 23 07:41 dovecot.index.cache -rw------- 1 stan stan 616 Feb 23 07:41 dovecot.index.log What do I need to check/change/do to get these search times back down to reasonable/respectable levels, i.e. around 10s? Thanks. -- Stan

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[Dovecot] 1.2.10: namespaces and still no luck
by Toni Mueller 23 Feb '10

23 Feb '10

Hi, I'm trying to set Dovecot up in a way that is compatible with console usage of the same mailboxes (ie, w/o IMAP). My mailboxen are almost all maildirs (I can ignore all other formats), and are laid out as follows: INBOX = ~/Maildir All other folders are maildirs in ~/Mail Eg. ~/Mail/archive, ~/Mail/sent, ~/Mail/some-mailing-list I configured this, along the lines of http://wiki.dovecot.org/Namespaces: # I unset 'mail_location' namespace private { separator = '/' prefix = location = maildir:~/Maildir inbox = yes list = yes subscriptions = yes } namespace private { separator = / prefix = archives/ location = maildir:~/Mail hidden = no #subscriptions = yes inbox = no list = yes } which I thought should do it, but it doesn't. In TB (3, if it matters), I see: Inbox Trash archives Trash Inbox (shaded) directory (shaded) And that's about it. I don't see any of the pre-existing maildirs in ~/Mail. I also can't delete the two additional "Inbox" and "Trash" folders, and I can't subscribe to the second "Inbox", nor to "directory". I proceeded to create a new folder under "archives", which mostly ended up to be a new maildir + index files under ~/Mail, but it had a '.' in front of it. Also, the separator was automatically reset to '.' for the second namespace, as I found out when I renamed one of the directories from 'dir.1' to '.dir.1'. Am I still doing something wrong, or is this a bug or limitation in Dovecot, or in this version of it? Kind regards, --Toni++

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[Dovecot] Occasional problem with POP3-Download
by Andre Tann 23 Feb '10

23 Feb '10

Hello everyone, I have two mailservers [1] running dovecot. Mail store format is maildir. Every once in a while I have the following problem: When a User downloads his mail via POP3, the client says something like "the server has closed the connection unexpectedly, and gives this reason: [...blahblah...]". One can now cancel the download, and restart it, and the problem shows up again and again. The first few mails get downloaded, and then the process stops. Strange to say the "blahblah"-portion is a piece of text out of the email that doesn't want to get downloaded. Then I remove this single message out of the Maildir/cur-directory, and everything is fine again. It is easy to figure out which mail to delete because it's the first one that is not market as seen [...] filename...:2,S otherfilename...;2, <= this file must be deleted [...] For me it looks as if dovecot had a problem with some byte sequence in this mail, and for some reason it gives an error message to the client which is taken out of the mail. On the SuSE-Machine, before dovecot there was a courier-imapd running, which never showed this kind of problem, so it should not be a client problem. Hopefully my description is clear enough. Does anyone have an idea what's going on here? Thanks. Andre [1] One machine is a openSuSE 11.2 with # rpm -qa | grep dovecot dovecot12-backend-sqlite-1.2.9-0.1.1.i586 dovecot12-backend-mysql-1.2.9-0.1.1.i586 dovecot12-backend-pgsql-1.2.9-0.1.1.i586 dovecot12-1.2.9-0.1.1.i586 The other machine is a Debian Lenny with # dpkg -l | grep dovecot dovecot-common 1:1.0.15-2.3+lenny1 dovecot-imapd 1:1.0.15-2.3+lenny1 dovecot-pop3d 1:1.0.15-2.3+lenny1 -- Andre Tann

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[Dovecot] dovecot 2.0_b3 autocreate plugin bug.
by Nikita Koshikov 23 Feb '10

23 Feb '10

New dovecot-2_beta3 installation. dovecot plugins section: plugin { autocreate = Drafts autocreate2 = Sent autocreate3 = Spam autocreate4 = Trash autosubscribe = Drafts autosubscribe2 = Sent autosubscribe3 = Spam autosubscribe4 = Trash expire = Trash 30 Spam 30 expire_dict = proxy::expire quota = maildir:Mailbox quota quota_rule = *:storage=500M quota_rule2 = Trash:storage=10%% quota_warning = storage=90%% /etc/dovecot/plugins/quota_warning.sh 90 trash = /etc/dovecot/plugins/dovecot-trash.conf } Trying to login, I got core dump and no mailboxes is created. If autocreate plugin is commented out - than login is success and default maildirs mailboxes(cur/new/tmp) become avaliable. Logs: ==> /var/log/dovecot/dovecot-debug.log <== Feb 23 16:38:36 imap: Debug: Loading modules from directory: /usr/lib/dovecot Feb 23 16:38:36 imap: Debug: Module loaded: /usr/lib/dovecot/lib10_quota_plugin.so Feb 23 16:38:36 imap: Debug: Module loaded: /usr/lib/dovecot/lib11_imap_quota_plugin.so Feb 23 16:38:36 imap: Debug: Module loaded: /usr/lib/dovecot/lib11_trash_plugin.so Feb 23 16:38:36 imap: Debug: Module loaded: /usr/lib/dovecot/lib20_autocreate_plugin.so Feb 23 16:38:36 imap: Debug: Module loaded: /usr/lib/dovecot/lib20_expire_plugin.so Feb 23 16:38:36 imap: Debug: Module loaded: /usr/lib/dovecot/lib20_virtual_plugin.so Feb 23 16:38:36 imap: Debug: Module loaded: /usr/lib/dovecot/lib20_zlib_plugin.so Feb 23 16:38:36 imap: Debug: Loading modules from directory: /usr/lib/dovecot Feb 23 16:38:36 imap(test(a)domain.com): Debug: Effective uid=8, gid=12, home=/data/mail/domain.com/test Feb 23 16:38:36 imap(test(a)domain.com): Debug: Quota root: name=Mailbox quota backend=maildir args= Feb 23 16:38:36 imap(test(a)domain.com): Debug: Quota rule: root=Mailbox quota mailbox=* bytes=524288000 messages=0 Feb 23 16:38:36 imap(test(a)domain.com): Debug: Quota rule: root=Mailbox quota mailbox=Trash bytes=52428800 (10%) messages=0 Feb 23 16:38:36 imap(test(a)domain.com): Debug: Quota warning: bytes=471859200 (90%) messages=0 command=/etc/dovecot/plugins/quota_warning.sh 90 Feb 23 16:38:36 imap(test(a)domain.com): Debug: Namespace: type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes Feb 23 16:38:36 imap(test(a)domain.com): Debug: maildir++: root=/data/mail/domain.com/test/data, index=, control=, inbox=/data/mail/domain.com/test/data Feb 23 16:38:36 imap(test(a)domain.com): Debug: Namespace: type=private, prefix=Company/, sep=/, inbox=no, hidden=no, list=yes, subscriptions=no Feb 23 16:38:36 imap(test(a)domain.com): Debug: maildir++: root=/var/mail/virtual, index=, control=, inbox= Feb 23 16:38:36 imap(test(a)domain.com): Debug: trash plugin: Added 'Trash' with priority 1 Feb 23 16:38:36 imap(test(a)domain.com): Debug: trash plugin: Added 'Spam' with priority 2 Feb 23 16:38:36 imap(test(a)domain.com): Debug: Namespace : Permission lookup failed from /data/mail/domain.com/test/data/.Drafts Feb 23 16:38:36 imap(test(a)domain.com): Debug: Namespace : Using permissions from /data/mail/domain.com/test/data: mode=0700 gid=-1 Feb 23 16:38:36 imap(test(a)domain.com): Debug: Namespace : Permission lookup failed from /data/mail/domain.com/test/data/.Drafts Feb 23 16:38:36 imap(test(a)domain.com): Debug: Namespace : Using permissions from /data/mail/domain.com/test/data: mode=0700 gid=-1 ==> /var/log/dovecot/dovecot-error.log <== Feb 23 16:38:36 master: Error: service(imap): child 21505 killed with signal 11 (core dumped) ==> /var/log/dovecot/dovecot.log <== Feb 23 16:38:36 imap-login: Info: Login: user=<test(a)domain.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, TLS warning: Can not parse XML syscalls information; XML support was disabled at compile time. GNU gdb (Gentoo 7.0 p1) 7.0 Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i686-pc-linux-gnu". For bug reporting instructions, please see: <http://bugs.gentoo.org/>... Reading symbols from /usr/libexec/dovecot/imap...done. warning: Can't read pathname for load map: Ошибка ввода/вывода. Reading symbols from /usr/lib/dovecot/libdovecot-storage.so.0...done. Loaded symbols for /usr/lib/dovecot/libdovecot-storage.so.0 Reading symbols from /usr/lib/dovecot/libdovecot.so.0...done. Loaded symbols for /usr/lib/dovecot/libdovecot.so.0 Reading symbols from /lib/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/libdl.so.2 Reading symbols from /usr/lib/libldap-2.4.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libldap-2.4.so.2 Reading symbols from /lib/librt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/librt.so.1 Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /usr/lib/liblber-2.4.so.2...(no debugging symbols found)...done. Loaded symbols for /usr/lib/liblber-2.4.so.2 Reading symbols from /lib/libresolv.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/libresolv.so.2 Reading symbols from /usr/lib/libssl.so.0.9.8...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libssl.so.0.9.8 Reading symbols from /usr/lib/libcrypto.so.0.9.8...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libcrypto.so.0.9.8 Reading symbols from /lib/ld-linux.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/ld-linux.so.2 Reading symbols from /lib/libpthread.so.0...(no debugging symbols found)...done. Loaded symbols for /lib/libpthread.so.0 Reading symbols from /lib/libz.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/libz.so.1 Reading symbols from /usr/lib/dovecot/lib10_quota_plugin.so...done. Loaded symbols for /usr/lib/dovecot/lib10_quota_plugin.so Reading symbols from /usr/lib/dovecot/lib11_imap_quota_plugin.so...done. Loaded symbols for /usr/lib/dovecot/lib11_imap_quota_plugin.so Reading symbols from /usr/lib/dovecot/lib11_trash_plugin.so...done. Loaded symbols for /usr/lib/dovecot/lib11_trash_plugin.so Reading symbols from /usr/lib/dovecot/lib20_autocreate_plugin.so...done. Loaded symbols for /usr/lib/dovecot/lib20_autocreate_plugin.so Reading symbols from /usr/lib/dovecot/lib20_expire_plugin.so...done. Loaded symbols for /usr/lib/dovecot/lib20_expire_plugin.so Reading symbols from /usr/lib/dovecot/lib20_virtual_plugin.so...done. Loaded symbols for /usr/lib/dovecot/lib20_virtual_plugin.so Reading symbols from /usr/lib/dovecot/lib20_zlib_plugin.so...done. Loaded symbols for /usr/lib/dovecot/lib20_zlib_plugin.so Reading symbols from /lib/libbz2.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/libbz2.so.1 Core was generated by `dovecot/imap'. Program terminated with signal 11, Segmentation fault. #0 0xb7b324a8 in expire_rule_find (env=0xb7ec2360, name=0x808afa0 "Drafts", expunge_secs_r=0xbfbd5c90, altmove_secs_r=0xbfbd5c8c) at expire-env.c:141 141 expire-env.c: Нет такого файла или каталога. in expire-env.c (gdb) bt full #0 0xb7b324a8 in expire_rule_find (env=0xb7ec2360, name=0x808afa0 "Drafts", expunge_secs_r=0xbfbd5c90, altmove_secs_r=0xbfbd5c8c) at expire-env.c:141 rule = <value optimized out> secs = <value optimized out> expunge_min = 0 altmove_min = 0 __PRETTY_FUNCTION__ = "expire_rule_find" #1 0xb7b325d2 in expire_rule_find_min_secs (env=0xb7ec2360, name=0x808afa0 "Drafts", altmove_r=0xbfbd5ccb) at expire-env.c:168 secs1 = 134776268 secs2 = <value optimized out> #2 0xb7b32c3d in expire_mailbox_allocate_init (box=0x808ae28) at expire-plugin.c:259 No locals. #3 expire_mailbox_allocated (box=0x808ae28) at expire-plugin.c:279 euser = 0x80885e0 #4 0xb7f4e6be in hook_mailbox_allocated (box=0x808ae28) at mail-storage-hooks.c:180 hooks = 0x80885cc #5 0xb7f4d0ef in mailbox_alloc (list=0x8089808, name=0x8066c00 "Drafts", flags=0) at mail-storage.c:497 _data_stack_cur_id = 4 new_list = 0x8089808 storage = 0x808a010 box = 0x808ae28 #6 0xb7eada02 in autocreate_mailbox (namespaces=0x8087078) at autocreate-plugin.c:28 No locals. #7 autocreate_mailboxes (namespaces=0x8087078) at autocreate-plugin.c:50 user = 0x8087800 env_name = "\000\000\000\000\r\000\000\000\n\256\b\b\370\205\b\b\000\000\000" name = <value optimized out> i = 1 #8 autocreate_mail_namespaces_created (namespaces=0x8087078) at autocreate-plugin.c:101 No locals. #9 0xb7f4e5ce in hook_mail_namespaces_created (namespaces=0x8087078) at mail-storage-hooks.c:150 hooks = 0x80885c8 #10 0xb7f48ac0 in mail_namespaces_init (user=0x8087800, error_r=0xbfbd5ee4) at mail-namespace.c:264 _data_stack_cur_id = 3 mail_set = 0x8087e00 namespaces = 0x8087078 ns = <value optimized out> ns_p = 0x8087078 inbox_set = <value optimized out> error = <value optimized out> driver = 0xb7fb9238 "\274\207", <incomplete sequence \375\267> location_source = 0x0 i = 2 __PRETTY_FUNCTION__ = "mail_namespaces_init" #11 0xb7f542fd in mail_storage_service_init_post (ctx=0x806f400, user=0x80719e8, mail_user_r=0xbfbd5f24, error_r=0xbfbd5ee4) at mail-storage-service.c:368 No locals. #12 mail_storage_service_next (ctx=0x806f400, user=0x80719e8, mail_user_r=0xbfbd5f24, error_r=0xbfbd5ee4) at mail-storage-service.c:855 user_set = 0x8071af0 ---Type <return> to continue, or q <return> to quit--- home = 0x8072089 "/data/mail/domain.com/test" chroot = 0x8066380 "" temp_priv_drop = <value optimized out> #13 0xb7f554f0 in mail_storage_service_lookup_next (ctx=0x806f400, input=0xbfbd5f64, user_r=0xbfbd5f28, mail_user_r=0xbfbd5f24, error_r=0xbfbd5fb8) at mail-storage-service.c:891 user = 0x80719e8 error = <value optimized out> ret = <value optimized out> #14 0x0805f9c4 in client_create_from_input (input=<value optimized out>, login_client=0x80707a8, fd_in=134786600, fd_out=10, input_buf=0xbfbd5f9c, error_r=0xbfbd5fb8) at main.c:172 user = 0x80660fc mail_user = <value optimized out> client = <value optimized out> set = <value optimized out> #15 0x08060258 in login_client_connected (client=0x80707a8, username=0x806608a "test(a)domain.com", extra_fields=0x8066100) at main.c:236 input = {module = 0x8062bcb "imap", service = 0x8062bcb "imap", username = 0x806608a "test(a)domain.com", local_ip = {family = 2, u = {ip6 = { __in6_u = {__u6_addr8 = "\177\000\000\001Pl\a\b3Q\351\267\364/\376\267", __u6_addr16 = {127, 256, 27728, 2055, 20787, 47081, 12276, 47102}, __u6_addr32 = {16777343, 134704208, 3085521203, 3086888948}}}, ip4 = {s_addr = 16777343}}}, remote_ip = {family = 2, u = {ip6 = { __in6_u = {__u6_addr8 = "\177\000\000\001", '\000' <repeats 11 times>, __u6_addr16 = {127, 256, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {16777343, 0, 0, 0}}}, ip4 = {s_addr = 16777343}}}, userdb_fields = 0x8066100} error = <value optimized out> input_buf = {data = 0x8070808, used = 3, priv = {0x0, 0x0, 0x3, 0x0, 0x0}} #16 0xb7ef3623 in master_login_auth_finish (client=0x80707a8, auth_args=0x80885e0) at master-login.c:180 conn = 0x80706b8 login = 0x806fc38 service = 0x806e2a8 __PRETTY_FUNCTION__ = "master_login_auth_finish" #17 0xb7ef405b in master_login_auth_callback (auth_args=0x80660fc, context=0x80707a8) at master-login.c:343 client = 0x80707a8 reply = {tag = 1, status = MASTER_AUTH_STATUS_OK, mail_pid = 21417} service = 0x806e2a8 __PRETTY_FUNCTION__ = "master_login_auth_callback" #18 0xb7ef4605 in master_login_auth_input_user (auth=0x806fc80) at master-login-auth.c:138 request = <value optimized out> id = <value optimized out> #19 master_login_auth_input (auth=0x806fc80) at master-login-auth.c:221 line = 0x80709cf "USER\t1\ttest@domain.com\tuid=8\tgid=12\thome=/data/mail/domain.com/test\tmail=maildir:~/data\tquota_rule=*:storage=100M" #20 0xb7f081a5 in io_loop_handler_run (ioloop=0x806e350) at ioloop-epoll.c:208 ctx = 0x806e470 event = 0x806e4b0 list = 0x8070998 io = 0x806ed60 tv = {tv_sec = 2147483, tv_usec = 0} t_id = 2 msecs = <value optimized out> ret = 1 i = 0 ---Type <return> to continue, or q <return> to quit--- j = 0 call = <value optimized out> #21 0xb7f07220 in io_loop_run (ioloop=0x806e350) at ioloop.c:350 No locals. #22 0xb7ef527a in master_service_run (service=0x806e2a8, callback=0x805fc30 <client_connected>) at master-service.c:478 No locals. #23 0x08060055 in main (argc=Cannot access memory at address 0x0 ) at main.c:313 service_flags = <value optimized out> storage_service_flags = <value optimized out> postlogin_socket_path = 0x0 set_roots = {0x8062c00, 0x0}

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