- dovecot - dovecot.org

Re: [Dovecot] solaris 10 + dovecot (1)
by Gábor Lénárt 14 Mar '07

14 Mar '07

Re, On Wed, Mar 14, 2007 at 02:26:53PM +0000, aza zel wrote: > like other suggest me, the cause of problem is that i not have much space in > / (i think that 4.4gb is a lot of space but i wrong) > so, i move to /export/home where i have space and try again and i not have > any problems. > about memory... i don't remeber how much i have but swap have nearly 667mbs > free for proces compile (i only run these proces). Nice :) I've mentioned 'memory' because of the Spanish (is it Spanish? Just guessing) fragment 'espacio de memoria' remembered me to the English word of 'memory', I was wrong here it seems. So forget about memory, it was only my guesswork about your native language :) The lesson here: please translate all messages to English if you want to post to an English mailing list. Otherwise some people (like me) have no chance to understand just guessing ... :) -- - Gábor

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[Dovecot] help with basic setup
by Perish Mutyanda 14 Mar '07

14 Mar '07

I am new to dovecot and would like to setup dovecot with mysql auth. I successfuly installed postfix admin and used the default table structure there, Mail delivery works fine as It gets delivered to mailboxes. My problem is the login, dovecot runs with no errors but I get the error: Mar 14 14:39:43 itecsouth dovecot: auth-worker(default): mysql: Connected to localhost (postfix) Mar 14 14:40:34 itecsouth dovecot: pop3-login: Disconnected: rip=41.xxx.xxx.190, lip=41.243.140.153 Mar 14 14:41:14 itecsouth dovecot: pop3-login: Login failed: Plaintext authentication disabled: rip=41.xxx.xxx.190, lip=41.xxx.xxx.153 Mar 14 14:41:14 itecsouth dovecot: pop3-login: Disconnected: rip=41.xxx.xxx.190, lip=41.xxx.xxx.153 I have tried to change the pass scheme in dovecot-mysql.conf to CRYPT as but says unknown auth_scheme a copy of my dovecot.conf protocols = pop3 listen = * login_process_size = 64 default_mail_env = maildir:/usr/local/virtual/%d/%u/ mail_extra_groups = postfix verbose_proctitle = yes first_valid_uid = 125 first_valid_gid = 125 mbox_read_locks = fcntl mbox_write_locks = fcntl protocol pop3 { pop3_uidl_format = %08Xu%08Xv pop3_client_workarounds = outlook-no-nuls oe-ns-eoh } auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@ auth_debug = yes auth_verbose = yes auth default { passdb sql { args = /usr/local/etc/dovecot-mysql.conf } userdb sql { args = /usr/local/etc/dovecot-mysql.conf } } -- and the dovecot-mysql.conf # Database driver: mysql, pgsql driver = mysql default_pass_scheme = PLAIN connect = host=localhost dbname=postfix user=dovecot password=dovecot password_query = SELECT password FROM mailbox WHERE username = '%u' AND active = '1' user_query = SELECT maildir, 125 AS uid, 125 AS gid FROM mailbox WHERE username = '%u' AND active = '1'

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[Dovecot] Timed Out or Disconnect Errors on emails with attachments
by Tudor Holton 14 Mar '07

14 Mar '07

dovecot-request(a)dovecot.org wrote: > > On Tue, 2007-03-13 at 16:35 +1100, Tudor Holton wrote: > >> I've migrated our Maildir system from Courier-IMAP-SSL to Dovecot with >> SSL and now we're getting "Connection to <server> Timed Out" errors when >> sending mail with attachments. The mail gets sent, however it doesn't >> save the mail in the user's "Sent" folder. >> > > What OS is Dovecot running in? What Dovecot version? What configure > options? There have been bugs related to this, but I thought they were > all fixed. > I apologise, I just realised that I hadn't included that information. The server is a current Ubuntu Edgy Box. It has Dovecot 1.0rc2. I now see there have been 25 rc's since then. (Yikes!) So I guess I should be complaining upstream. I did search the net for several weeks, however, and found no mention of this problem, even in the Dovecot wiki or mailing list archive. So if you say it's fixed, then I'll put something in the wiki to that effect and go badger the Ubuntu guys for an upgrade. :-) Cheers, Tudor.

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[Dovecot] HTML mails
by Timo Sirainen 14 Mar '07

14 Mar '07

I think I configured Mailman to drop all text/html MIME parts. Lets see if it works. html -> text translation is also enabled.

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[Dovecot] Dovecot for "push email"
by Matthew Sheffield 14 Mar '07

14 Mar '07

Does anyone have experience here using a combination of Dovecot and a Windows or Palm client that supports IMAP IDLE to achieve "push email?" I'm doing some research into how feasible this is for companies and non-profits.

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[Dovecot] imaptest updates
by Timo Sirainen 13 Mar '07

13 Mar '07

I spent the last 5 hours or so updating my imaptest tool. It's beginning to become almost like a real IMAP client. http://dovecot.org/tools/imaptest10.c contains a version that compiles against Dovecot v1.0 (instead of against CVS HEAD). imaptest is this tool that I've been using for a few years to do stress testing. It can create a lot of dummy IMAP client connections which execute some commands. Today I added some new features to it: - Support for pipelining commands (where allowed by IMAP spec). Looks like it about doubles the throughput. "no_pipelining" option disables this. - Support for MULTIAPPEND extension. When multiple mails are APPENDed one after another this extension is used to save them all in one transaction. - Previous versions gave an error when trying to append large mails. Now large mails work too. - By default the commands are executed in one specific order. Using "random" option randomizes the order. - You can separately specifify probabilities of how often to execute each command. 0 means never, 100 means always, 10 means 10% of the time and so on. 100,30 means that it's always executed, and then it's executed again and again with 30% probability. The basic way to run it is: ./imaptest user=test pass=password host=imap.domain.org mbox=/home/user/mail/dovecot clients=1 Or if you want to run multiple users, you can use user=test%d which will use users test1..test100 (the size is hardcoded in USER_RAND define). If you want to do benchmarking, you can set it to run for specified amount of time, and you should also give random number generator the same seed every time: ./imaptest seed=123 secs=300 If you want to test/benchmark only the login+logout speed, use: ./imaptest - select=0 To create a lot of long-running clients doing STATUS and NOOPs: ./imaptest clients=100 - logout=0 status=50 noop=50 delay=100 To test copying messages: ./imaptest copybox=Trash By default LOGIN command is used. If you want to try AUTHENTICATE: ./imaptest auth=100 Hmm. I guess that's about it. The list of commands that you can use starts from line 134. You can use either the long names or the short names.

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[Dovecot] Timed Out or Disconnect Errors on emails with attachments
by Tudor Holton 13 Mar '07

13 Mar '07

Hello all, I've migrated our Maildir system from Courier-IMAP-SSL to Dovecot with SSL and now we're getting "Connection to <server> Timed Out" errors when sending mail with attachments. The mail gets sent, however it doesn't save the mail in the user's "Sent" folder. Our IMAP and SMTP servers are different. So the client sends to the SMTP server first, completes that, and then opens a channel to Dovecot and dovecot appears to receive the data (TB gives a progress bar as it's sending to dovecot) and then disconnects _after_. We have a mixed bag of clients here from Thunderbird on Linux and Windows, through Outlook Express to Outlook. All show similar errors. I enabled the logs on dovecot, however it wasn't very informative. At the time it occurred the only line in the log file was: dovecot: 2007-03-13 16:21:12 Info: IMAP(tudor): Disconnected This is obviously different from "Disconnected: Logged out". Emails without attachments behave ok, it only occurs with emails with attachments. Has anyone else had any experience of this? Cheers, Tudor.

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[Dovecot] Prayer, Maildir and Folders whose names begin with "."
by Mike Brudenell 13 Mar '07

13 Mar '07

Greetings - I think I've just had one of my fears confirmed: not Dovecot-specific exactly, but it affects how we will use of Prayer (Webmail Software) with Dovecot... Currently our production service uses MBX-format mailboxes with the UW IMAP server; we also use the University of Cambridge "Prayer" software for Webmail. By default Prayer saves its preference settings, address book and so on in a regular IMAP folder called ".prayer" And one of the nice things about the UW IMAP server is that you can tell it not to include files whose names start "." when returning the list of folders for a LIST command. This means: * People don't see the secret ".prayer" folder when they look at the list; * But if something (eg, Prayer) knows its name it can open this folder to get at its content. The combination of these is that (a) Prayer can store its settings and (b) users don't see where, so can't open/tamper with the secret settings folder for Prayer. But I've just discovered that I can't create a folder called ".prayer" using Maildir-format mailboxes. The problem appears to be the leading "." I suspect it's because the Maildir++ specification at http://www.inter7.com/courierimap/README.maildirquota.html says this: > Folders are created as subdirectories under the main Maildir. The name of > the subdirectory always starts with a period. For example, a folder named > "Important" will be a subdirectory called ".Important". You can't have > subdirectories that start with two periods. A folder named ".prayer" would lead to a subdirectory being created called "..prayer" I think. Q. Can anyone confirm that you can't create Maildir folders called ".somename"? Q. Are there any other Prayer users out there using Dovecot and Maildir format mailboxes? What are you doing about the user-settings folder for Prayer? (And do you manage to hide it from view, so they can't tamper with its contents?) Cheers, Mike B-) -- The Computing Service, University of York, Heslington, York Yo10 5DD, UK Tel:+44-1904-433811 FAX:+44-1904-433740 * Unsolicited commercial e-mail is NOT welcome at this e-mail address. *

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[Dovecot] error with virtual users
by Antonio Casado Rodríguez 13 Mar '07

13 Mar '07

Hi, In my dovecot-deliver.log i have this: deliver(xxuser): Mar 13 11:36:49 Error: open(/home/xxuser/.temp.alboran.24421.63c6890e35b613e8) failed: No such file or directory deliver(yyuser): Mar 13 11:38:29 Error: open(/home/yyuser/.temp.alboran.26046.dcb46511eeb37f3d) failed: No such file or directory but i haven't homedir user. I have /var/spool/mail/xxuser/ maildir Is that a error? I have Dovecot-1.0-rc19 + dovecot-deliver + rhel 4.4 Thanks you

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[Dovecot] index performance issues
by Netserve 13 Mar '07

13 Mar '07

Running 1.0.rc22 We have a single file server, running NFS (Single large sas disk) with about 80Gb of mail. mount -o remount,rsize=2048,wsize=2044,actimeo=0,soft,rw xx.xx.xx.xx:/mailboxes /nfs1 There are 3 front end pop/imap servers using an LVS director. Indexes are stored on each front end server. -rw------- 1 admin 500 144 Mar 12 17:47 dovecot.index -rw------- 1 admin 500 10272 Mar 12 17:47 dovecot.index.cache -rw------- 1 admin 500 120 Mar 12 17:47 dovecot.index.log Normally everything runs fine, there are about 1500 active pop accounts and 100 Imap. Typically, 10 to 20 pop accounts are downloading at anyone time, and there may be 10 or 20 active Imap sessions. If we find that the index partition has got to 100% full and corrupted the indexes then we'll delete the entire index dir and let dovecot rebuild all the indexes however, we end up with 100mbit / 10Mb/sec of network traffic between the NFS server and the pop/imap servers. The nfs server load climbs to 20+ as does the load on the front end mail servers. It can take 4 or 5 hours for the indexes to rebuild during which time imap is slow but works and pop downloads all end up with dead processes that need clearing every few minutes. admin 5869 0.0 0.1 4384 1060 ? D 17:56 0:00 \_ pop3 [info@.co.uk 180.98] admin 5877 0.0 0.1 4392 1112 ? D 17:57 0:00 \_ pop3 [bro94 62.182] admin 5879 0.0 0.1 4396 1052 ? D 17:57 0:00 \_ pop3 [spamcatch@.com 81.163] admin 5884 0.0 0.1 4392 1056 ? D 17:57 0:00 \_ pop3 [ctaylor@.com 81.175] Normally the nfs server delivers possibly 200Kbytes of traffic average spiking to 400Kbytes but the 900+Kbytes per second sustained rate for 5 or 6 hours is killing the service. Is there something we've got wrong here? (I know a Scsi raid NFS would help as would Gbit networking but I can't see the setup we've got as needing that sort of hardware spec?) Thanks John

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