- dovecot - dovecot.org

[Dovecot] dovecot-stable mbox weirdness
by Matt Howard 14 Mar '05

14 Mar '05

I just tested dovecot-stable from 2005-03-08 and 03-12 and saw the following behavior. All of my mbox folders show is the first message's header. None of the files were truncated (whew, saves a restore). I had 0.99.12.1 installed before this, and just switched back to 0.99.14. Both 0.99.x versions work fine. I removed all of the index files to see if there was a hiccup there, with no effect. System is Slackware 10.0. My package was built with this: http://tinyurl.com/6l2vv

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[Dovecot] aha! (was apple mail vs. v0.99)
by sean finney 14 Mar '05

14 Mar '05

it seems that when you say "check for new mail" in apple mail, it sends a NOOP to the imap server to get the response. in uw, the conversation is something like: 25 NOOP 25 OK NOOP completed 26 NOOP * 2796 EXISTS * 7 RECENT 26 OK NOOP completed however, with dovecot, if it has already notified the client that new mail has arrived, it will look something like: * 24 EXISTS * 2 RECENT 22 NOOP 22 OK NOOP completed. 23 NOOP 23 OK NOOP completed. (the counts are different because these are seperate accounts) so evidently, apple mail is too stupid to realize to read info from the server unless it asked for it... so now that i think i have a short-term fix (disabling notification for new mail server-side), i can breathe a sigh of relief. for a long-term fix, would it be possible to have the server always notify the client of new mail after a NOOP? thanks, sean

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[Dovecot] Authentication error after authentication query (for Eudora 5.2 on Mac)
by Tim Alberts 14 Mar '05

14 Mar '05

Greetings all, I'm a new user of Dovecot and want to say thanks for the great software. I am having a problem at the moment. I run a heterogeneous network with windows and Mac clients logging into a Fedora Linux 2 box running sendmail and previously UW-IMAP, but now Dovecot. I am using strictly pop3, plain authentication with mbox format. Every computer in the network is working fine with this sytem, except 1. A mac running Eurdora mail 5.2. It gives me an Authentication error every time it tries to get mail. I telnet into the server and when I skip the AUTH process and just log in, the server works fine as follows: [talberts@localhost ~]$ telnet mail.inside.msi 110 Trying 192.168.0.3... Connected to mail.inside.msi (192.168.0.3). Escape character is '^]'. +OK dovecot ready. user tdazey +OK pass ****** +OK Logged in. quit +OK Logging out. Connection closed by foreign host. [talberts@localhost ~]$ However, when I do the following session: [talberts@localhost ~]$ telnet mail.inside.msi 110 Trying 192.168.0.3... Connected to mail.inside.msi (192.168.0.3). Escape character is '^]'. +OK dovecot ready. auth cram_md5 -ERR Unsupported authentication mechanism. auth login -ERR Unsupported authentication mechanism. auth plain + user tdazey -ERR Authentication failed. user tdazey +OK pass ****** +OK Logged in. quit +OK Logging out. Connection closed by foreign host. [talberts@localhost ~]$ I don't need any authentication except plain. However, when the client queries the settings, it fails the login. I tried this on multiple accounts with the same results. What do I do to fix this?

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[Dovecot] Dovecot, pam and OpenLDAP
by Rune Hamnvik 14 Mar '05

14 Mar '05

Hello We have a Dovecot installation using only pop3 where auth data is stored in OpenLDAP and accessed using pam. With Fedora 2 everything has worked fine, but when we upgraded to Fedora 3 we started to get problems. After a while a lot of dovecot processes existed, and error messages was logged in maillog telling that the processes was too old. Then some error messages telling about memory leak was logged. Our /etc/pam.d/dovecot looks like this: #%PAM-1.0 auth required pam_nologin.so auth required pam_stack.so service=system-auth account required pam_stack.so service=system-auth session required pam_stack.so service=system-auth Any idea what is happening? Rune Hamnvik Mobinor AS Norway

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Re: [Dovecot] Plain Authentication - Outlook not working
by F. Even 14 Mar '05

14 Mar '05

What problems exist with Thunderbird? Both my wife and I are using Thunderbird with no issues on both OSX and WindowsXP. (No issues that I'm noticing anyway). I'm using 1.0 Test 64: Dovecot v1.0-test64 starting up Frank Simon Windsor wrote: > Hi > > Thanks for the advice, but no luck. > > In the end, I am now using Evolution, which I do not like but it works. > It appears that Kmails IMAP and Thunderbirds IMAP are broken, > particularly kmails! > > Installing Dovecot 1.0.59 improves Dovecots IMAP software, but exposes > flaws for Kmail and Thunderbird! > > So, until the update to KDE, due at the end of March, I will endure > Evolution. > > Thanks, once again > > Simon > > On Sun, 2005-03-13 at 17:40 -0600, F. Even wrote: > >>>Hi >>> >>>I tried re-subscribing and still, I get not emails with kmail. >>> >>>Outlook appeared to pick the change in Subscription file automatically. >>> >>>Any other ideas, or should I drop the IMAP connection and re-do it? >> >>I've always had to drop my IMAP connection and reconnect to recognize >>changes I've made on the server side. A kill -1 to dovecot will only >>reload the server process and the login auth processes...it won't kill >>your already established IMAP connection, which as far as I can tell, >>keeps using old settings. >> >>If you are having that many problems, delete all of your subscriptions >>files and dovecot caches and start from scratch. I've had to do it a few >>times to get things to work as expected. >>

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RE: [Dovecot] Plain Authentication - Outlook not working
by F. Even 14 Mar '05

14 Mar '05

> Hi > > I tried re-subscribing and still, I get not emails with kmail. > > Outlook appeared to pick the change in Subscription file automatically. > > Any other ideas, or should I drop the IMAP connection and re-do it? I've always had to drop my IMAP connection and reconnect to recognize changes I've made on the server side. A kill -1 to dovecot will only reload the server process and the login auth processes...it won't kill your already established IMAP connection, which as far as I can tell, keeps using old settings. If you are having that many problems, delete all of your subscriptions files and dovecot caches and start from scratch. I've had to do it a few times to get things to work as expected.

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[Dovecot] Restrict Imap access
by Sergiu Zaharia 14 Mar '05

14 Mar '05

Hello. I need to restrict access to IMAP ports to a few users, so that all users can use POP3 and just a few of them will be able to access IMAP. I use secure connections POP3s and IMAPs. Is it possible? Also... When I connect to the Dovecot server using Outlook (IMAPs) I get a Warning message,something like: "The server you are connectiing to uses a non verified protection certificate. A chain of certificates ...so on ( I can't translate :) ) Continue using the server? " How can I fix that warning? Thanks

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RE: [Dovecot] Plain Authentication - Outlook not working
by Timo Sirainen 13 Mar '05

13 Mar '05

On Sun, 2005-03-13 at 15:18 +0000, Simon Windsor wrote: > Hi > > I tried re-subscribing and still, I get not emails with kmail. > > Outlook appeared to pick the change in Subscription file automatically. > > Any other ideas, or should I drop the IMAP connection and re-do it? Do you even see the mailbox list? Maybe kmail got somehow confused and recreating the IMAP account entirely would be easiest way to fix it.

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[Dovecot] pop before smtp with 'exact' and 'exim4'
by Jools Smyth 13 Mar '05

13 Mar '05

Hello, I just thought I would write this in case its useful to anyone. I've used dovecot for a while, as its so easy to set up, its fast and it and just "works". I recently wanted to be able to send via my server after pop3s authentication. I'm also running debian (testing) which utilises exim4 by default. I found no information about how to do it with this combination of software so went about sorting it out myself. First I got exact : (a pop before smtp daemon) http://adju.st/dist/exact/ After compiling and installing i edited its /usr/local/etc/exact-servers.conf It doesn't support dovecot's log format out of the box, so i created a regular expression entry for it. <server dovecot> order username,address match (Login): (.*) \[(.*)\] </server> I then edited its main configuration, (/usr/local/etc/exact.conf) changing only the user its running on (default mail/mail) to Debian-exim/mail. (so that the state file it creates can be read fine by exim4) I also changed the mail log ownership so that group mail can read them, /usr/local/var/state/exact to drwxr-sr-x 2 Debian-exim mail 1024 Mar 13 16:39 exact and /usr/local/var/run/exact to drwxr-sr-x 2 Debian-exim mail 1024 Mar 12 21:54 exact Exact's exim documentation is not for the most recent version, so I had to locate the correct line to modify. I went into the exim4 configuration files. I use the debian split format configuration. In the file /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt there is a line near the bottom which reads accept hosts = +relay_from_hosts I changed this to accept hosts = +relay_from_hosts : net-lsearch;/usr/local/var/state/exact/rela y I then just set exact to and start/stop in /etc/init.d/exim4 thats all! Best Regards Jools -- Oxford Inspire jools(a)oxfordinspire.co.uk Tel: 01865 751879 Mob: 07966 577498

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[Dovecot] Plain Authentication - Outlook not working
by Simon Windsor 13 Mar '05

13 Mar '05

Hi I have just upgraded a mail server from dovecot-0.99 to stable (dovecot-1.0.59). My normal desktop email client, kmail is working fine, but outlook keeps producing PLAIN authentication errors, and refusing to authenticate. From dovecot.log, I can see dovecot: Mar 13 10:57:30 Error: auth(default): sql(<xxxxxxxMy Detailsxxxxxxxxxxx>): Password query must return a field named "password" I have tried setting, unsetting disable_plaintext_auth in dovecot.conf, to no avail. What is happening, and what should I do to get all email cleints to work. Simon -- Simon Windsor Email: simon.windsor(a)cornfield.org.uk Tel: 01454 617689 Mob: 07720 447385

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[Dovecot] "not listening" notification
by Alan Tam 13 Mar '05

13 Mar '05

Hi dovecot, My dovecot log shows this: Feb 27 03:08:38 eta imap-login: Login: sltam [X.X.X.X] Feb 27 03:09:38 eta imap-login: Disconnected: Inactivity [X.X.X.X] Feb 27 03:10:32 eta dovecot: login: received another "not listening" notification (if you can't login at all, see src/lib/fdpass.c) Feb 27 03:10:42 eta dovecot-auth: Login process has too old (124s) requests, killing it. Feb 27 03:10:42 eta dovecot-auth: Login process 8 disconnected Any clues what it means? Recently I have to restart dovecot several times a day, after I have report that all users cannot login. I am running Debian sarge (2.6.8 kernel) with dovecot version 0.99.14-1 with auth_verbose and auth_debug on. -- Regards, Alan

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[Dovecot] Errors when searching large folders
by Mike Jakubik 12 Mar '05

12 Mar '05

I am getting errors from dovecot when trying to search, in large Maildir folders. The folder has 40454 messages and is 371MB in size. The email client is squirrelmail 1.4.3, running on FreeBSD-current. I've had this problem before, and i posted a message here. The author said he would fix this, but it seem the problem is still not resolved. This is the error i get: --- ERROR : Connection dropped by imap-server. Query: SEARCH CHARSET ISO-8859-1 ALL BODY {5} hello BODY {5} there --- At this point the HD led remain on for another 30 seconds or so. Thanks.

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[Dovecot] Logging options
by Joebstl Thomas 12 Mar '05

12 Mar '05

Hi, is it possible to configure dovecot's logging so it logs stuff like "User x logged in from IP/Host y and had z new messages" like I'm used from qpopper? That immensely helps when debugging PEBKAC issues. Enabling auth_verbose isnt really helpfull since a failed login generates 4 lines, some even without a pid - so it's a bit hard guessing which log entry belongs to which login attempt or even writing a script which checks for those. Regards, Thomas

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[Dovecot] dovecot test62 vs test64
by akolasny＠jhu.edu 12 Mar '05

12 Mar '05

Greetings: I've been using Dovecot 1.0-test62. It has been working well. I tried to upgrade to 1.0-test64 but users could not authenticate. Both versions I compiled with: ./configure --with-ssl=openssl; make; make install They compiled and installed fine. The /usr/local/etc/dovecot.conf needed to be modified due to the new syntax. 1.0-test64 with the new dovecot.conf didn't work. I'm using imaps. The error related to not being able to authenticate. I reinstalled test62 with the original dovecot.conf and everything worked fine again. My config files look like: dovecot.conf-test62 looks like: base_dir = /var/run/dovecot/ protocols = imap imaps pop3 pop3s ssl_disable = no ssl_cert_file = /usr/share/ssl/certs/dovecot.pem ssl_key_file = /usr/share/ssl/private/dovecot.pem disable_plaintext_auth = yes login_dir = /var/run/dovecot-login login = imap login = pop3 mail_extra_groups = mail default_mail_env = mbox:~/mail/:INBOX=/var/spool/mail/%u auth = default auth_mechanisms = plain auth_userdb = passwd auth_passdb = pam auth_user = root dovecot.conf-test64 looks like: base_dir = /var/run/dovecot/ protocols = imap imaps ssl_disable = no ssl_cert_file = /usr/share/ssl/certs/dovecot.pem ssl_key_file = /usr/share/ssl/private/dovecot.pem disable_plaintext_auth = yes login_dir = /var/run/dovecot/login default_mail_env = mbox:~/mail/:INBOX=/var/spool/mail/%u protocol imap { } protocol pop3 { } auth default { mechanisms = plain passdb pam { } userdb passwd { } user = root } What am I doing wrong? Am I missing something in the 1.0-test64 config file? Your comments or suggestions are greatly appreciated. Thanks, Anthony

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[Dovecot] more info on apple mail vs dovecot 0.99
by sean finney 11 Mar '05

11 Mar '05

hey folks, i have a little more info on this problem... about my setup: i have a mail server running dovecot imap on port 143 and uw imap on 8143. all mail is delivered directly to ~/mbox. what happens: when mail talks to dovecot, every time you check new mail, it re-downloads the entire mailbox. new mail does not show up in the inbox, even after it can be confirmed delivered (via mutt on the server). the really wierd part: even though the message doesn't show up in the list of messages in the inbox, the number of new messages floating above the dock icon (and next to the combined "In" box) *does* go up! wtf?? if you switch between mailboxes, or select "rebuild mailbox", the new message shows up of course both involve resynching the entire mailbox again... my first thought was that this was some kind of wierd application bug, but i'm not so sure. with uw-imap, when you select check new mail it does not re-download the entire mailbox, but the new message does not reliably show up until you switch from one message to another in your inbox. so it seems like there's *some* kind of difference between the two servers... and here come the questions: what would cause apple mail to always download all messages from dovecot but not from uw-imap? i found the following link, is it still relevant? http://lists.freebsd.org/pipermail/freebsd-questions/2004-April/044513.html is this something that might be resolved with 1.0-stable? is there something specific i should look for in protocol dumps? would compacting mailboxes have any effect on this? anyway, thanks to everyone who's helped so far... sean

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Re: [Dovecot] Bit of a Newbie Question
by Wouter Van Hemel 11 Mar '05

11 Mar '05

On Thu, 10 Mar 2005, Jud wrote: >> You have not yet told us if you actually can receive email from outside; >> both with respect to your MTA configuration and an open (i.e. not >> firewalled) internet ip. > > I will have to investigate my MTA configuration. It's not clear to me > what is meant by an "open (not firewalled) internet ip." What > can/should I do on my system to create this condition? > Well, you should have an ip that is publicly accessible for mail servers on the internet, especially for the ones you expect will forward email. If your provider has a firewall for its customers that disallows access to certain ports (such as 25 and 80), you simply can not receive email (by SMTP). Perhaps FastMail will allow you to specify a specific port, but I doubt it. IMO, it's not a good idea to run a mailserver on a residential line with a dynamic ip; likely the contract with your isp even forbids this. Ofcourse, it's up to you to decide and try anyway. >> There is no difference for dovecot. For now, I'd say rather that the >> problem is either that your MTA doesn't accept email, or that your isp >> firewalls port 25 (which is rather likely on a dynamic ip home >> connection). > > It is probably true that my isp blocks port 25; it will be easy to > determine for sure. If so, are there any solutions you can suggest? > Do you have any accounts on remote servers? Just do a 'telnet your_internet_ip 25' ... or something along those lines. If not, try an online open relay testing service such as the one ordb provides: http://www.ordb.org/submit/ Be sure to enable test feedback. It will probably tell you enough for you to find out if it can reach your server or not. >> Read the MTA logs. See if there is any connection at all. If there is, >> check what happens with the messages (refused?). If there is not, you >> either are not accepting connections on your outside interface, or your >> provider has blocked access to port 25. >> >> Did you receive any bounces? > > Yes, though I deleted them, not even thinking to read them for > information. However, it is quite simple for me to create more bounces! > ;-) > Do so, and read the actual error message. This has very little to do with dovecot...

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[Dovecot] dovecot and vpopmail
by radus＠smartpost.ro 11 Mar '05

11 Mar '05

Hello Does dovecot know to expand %d in default_mail_env to the default vpopmail domain in case the user logs without attaching the @domain in his login ? I last tried this on an old dovecot and this didn't work... Radu

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[Dovecot] 1.0-test64
by Timo Sirainen 10 Mar '05

10 Mar '05

http://dovecot.org/test/ Possibly fixes the mail-cache-transaction assert. Passdb and userdb configuration changed. New format is: passdb sql { args = /etc/dovecot-sql.conf } passdb pam { } userdb passwd { } The above would first try to authenticate from SQL database, if it failed because user wasn't found, or password was wrong, it would then try PAM. The same is done for userdbs. I'll probably do some other configuration file changes still before v1.0. I'm also thinking about having a separate config process which can read the actual configuration from files or sql.

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[Dovecot] Is it possible with mysql ?
by kaka 10 Mar '05

10 Mar '05

Is it possible to install dovecot imap / pop3 with mysql authentication, with postfix as mta and with squirrelmail as webmail ? Is it reliable for production state ? I'm working with courier-imap but I don't like it. Hi, kakà.

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Re: [Dovecot] mail-cache-transaction.c error
by Jamie Herre 09 Mar '05

09 Mar '05

On Mar 8, 2005, at 12:50 AM, F. Even wrote: > Timo Sirainen wrote: >> On 7.3.2005, at 01:09, F. Even wrote: >>> Mar 6 16:50:59 cerebus dovecot: IMAP(problemuser): file mail-cache- >>> transaction.c: line 250 (mail_cache_transaction_reserve_more): >>> assertion failed: (size >= 2) >> I saw this a few times with my tests, but since it happened pretty >> rarely I thought it wouldn't matter much.. Guess you found a way to >> reproduce it much more easily. I'll try to look into it soon. > > Very regularly... Here's a recipe that works for me: Shutdown dovecot; Delete all "dovecot*" files from Maildir; Restart dovecot; Synchronize mailboxes. Every time I get a ton of the above exceptions.

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[Dovecot] dovecot patch for TCB auth
by Thomas Hummel 08 Mar '05

08 Mar '05

Hi, I'm writing to you on behalf of the Pasteur Institute's (Paris, France) IT team. We're currently using dovecot-0.99.10.5_2 on a FreeBSD 5.3. We're planning to upgrade to dovecot-1.x with an openLDAP user and password database and patch it at the same time to include some authentication feature we're using : Since most of our user currently don't use dovecot at all and still authenticate on a DEC alpha running OSF1 [digital unix] V5.1 732, an authentication profile is maintained for each of them on the system. This user profile is kept in the protected password database, accessible only to trusted programs acting on behalf of the trusted computing base (TCB). Some TCB fields are useful to us so we're planning to use their LDAP attibute equivalents and we wrote a custom LDAP shema that includes those which were missing from the standard openLDAP distribution [see details below]. So we're planning (in fact are about to) patch dovecot-1.x in order to take those LDAP attribute (matching the TCB field of interest to us) into account. To do so, we wrote some documentation (still in a draft state) to extend our understanding of dovecot architecture and authentication process. Of course, we're going to give it (patch + doc) back to you and make it freely available. But we'd like to know if you : - were already working on such a patch or planning to do so - were interested, once done (by us or you) to include it into the official release, since it could interest some other person who runs digital unix with TCB authentication Thanks -- Thomas Hummel | Institut Pasteur, Paris, France <hummel(a)pasteur.fr> | Pôle informatique - systèmes et réseau -------- Here are some details about which attribute we're planning to use and their TCB equivalents uidNumber ~ u_id uid ~ u_name userPassword ~ u_pwd shadowLastChange ~ u_succhg shadowExpire ~ u_expdate shadowMax ~ u_life shadowWarning ~ u_exp [ shadowWarning = u_life - u_exp] plus the one we wrote : maxTries ~ u_maxtries [ maximum number of consecutive unsuccessful login attempts to the account that are permitted until the account is disabled ] numUnsucLog ~ u_numunsuclog [ number of unsuccessful login attempts to the account. It is reset when a successful login to the account occurs.] Lock ~ u_lock [ A boolean indicating if the account is locked ]

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[Dovecot] mail-cache-transaction.c error
by F. Even 08 Mar '05

08 Mar '05

Hello all. I've just recently (this last weekend) migrated to Dovecot on my FreeBSD 4.x box. So far, so good, I like it a lot, and plan on moving mboxes to Maildirs sometime this next weekend. BUT....I've currently run into a problem. I'm seeing an error when one user account tries to access the INBOX from Squirrelmail: Mar 6 16:50:59 cerebus dovecot: IMAP(problemuser): file mail-cache- transaction.c: line 250 (mail_cache_transaction_reserve_more): assertion failed: (size >= 2) I'm using 1.0-test63: Mar 6 04:17:47 cerebus dovecot: Dovecot v1.0-test63 starting up I've since blown away the .imap folder for this user and tried again, it still fails. Other user accounts are having no problems. Here are the relevant log snippets: Mar 6 16:18:02 cerebus dovecot: imap-login: Login: noproblems [127.0.0.1] Mar 6 16:48:48 cerebus dovecot: imap-login: Login: problemuser [127.0.0.1] Mar 6 16:48:49 cerebus dovecot: imap-login: Login: problemuser [127.0.0.1] Mar 6 16:48:52 cerebus dovecot: IMAP(problemuser): file mail-cache- transaction.c: line 250 (mail_cache_transaction_reserve_more): assertion failed: (size >= 2) Mar 6 16:48:52 cerebus dovecot: child 64331 (imap) killed with signal 6 Mar 6 16:48:52 cerebus dovecot: imap-login: Login: problemuser [127.0.0.1] Mar 6 16:50:42 cerebus dovecot: imap-login: Login: problemuser [127.0.0.1] Mar 6 16:50:59 cerebus dovecot: IMAP(problemuser): file mail-cache- transaction.c: line 250 (mail_cache_transaction_reserve_more): assertion failed: (size >= 2) Mar 6 16:50:59 cerebus dovecot: child 64391 (imap) killed with signal 6 Mar 6 16:52:54 cerebus dovecot: imap-login: Login: problemuser [127.0.0.1] Mar 6 16:52:57 cerebus last message repeated 2 times Mar 6 16:52:58 cerebus dovecot: IMAP(problemuser): file mail-cache- transaction.c: line 250 (mail_cache_transaction_reserve_more): assertion failed: (size >= 2) Mar 6 16:52:58 cerebus dovecot: child 64420 (imap) killed with signal 6 Mar 6 16:53:31 cerebus dovecot: imap-login: Login: noprob2 [127.0.0.1] Mar 6 16:53:54 cerebus last message repeated 4 times Mar 6 16:56:12 cerebus last message repeated 12 times Mar 6 16:58:12 cerebus last message repeated 11 times Mar 6 16:58:30 cerebus dovecot: imap-login: Login: noproblems [127.0.0.1] Mar 6 16:58:34 cerebus last message repeated 2 times Any help would be appreciated. Thanks, Frank

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[Dovecot] Upgrade to new server question
by John Peacock 08 Mar '05

08 Mar '05

I'm vainly trying to get a new server ready to become the default mail server. We have a SAN, so I don't need to move the mailboxes (I can mount the same partition from both machines), but the question is what version of dovecot to load. I'm assuming that I cannot run both 0.99.14 and 1.00.x on the same maildirs (the indexes differ?). However, is it safe for me to mount the same maildirs from two different boxes? John -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4501 Forbes Boulevard Suite H Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5748

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[Dovecot] 1.0-test63 released
by Timo Sirainen 07 Mar '05

07 Mar '05

http://dovecot.org/test/ A new test release for a change. Fixed several problems with indexes, especially related to transaction log rotating (pretty easy to find bugs when you set them to be rotated every 5 seconds and keep bombing the same mailbox with 10 test clients). Please report both new and old bugs. The changes might have fixed lots of different randomly occuring problems. The most important bugfixes were also done to dovecot-stable. The tarball is already updated. Looking at changelog, there seems to be: - Don't crash if client disconnects in the middle of APPEND - LDAP and static passdbs can return "extra parameters" (http://wiki.dovecot.org/AuthSpecials) now. Only SQL did before. - Added "nice" extra parameter for userdb to set imap/pop3 process's priority - RPA/SQL passdb patches from Andrey - Major rearrangements (again) to auth code: - Blocking passdbs (SQL) now create auth worker processes to do the actual blocking work. auth_worker_max_count setting specifies the maximum number of these processes to create. PAM and checkpassword code should be fixed to use this method as well. - Fallback to using expired records from auth cache if database lookups fail. - multiple auth setting blocks still not working - Transaction logs are now rotated when they're over 128kB and created (not updated as before) more than 5 minutes ago. So with high traffic mailboxes the log file shouldn't grow forever anymore.. - other fixes and cleanups

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[Dovecot] Too many open files, etc.
by Martin Preen 07 Mar '05

07 Mar '05

Hello, a few days ago I switched out UW-server installation to dovecot 0.99.14 (Solaris 9). There were a few client issues, but mostly the migration was ok. But I have still some questions/problems: +) dovecot-auth: ... PAM: pipe() failed: Too many open files I increased the max. number of open files. Is this normal behaviour, that more than 512 open files are needed ? +) we're using mbox on NFS and index files on local disks. When building the index files for the first time, it takes (of course) a long time for large folders. But we have these users, and this will happen sometimes. Is there a way to improve performance ? +) in general dovecot saves a lot of NFS-bandwidth compared to UW-imap. Thats what I was looking for. But there also seems to be a problem with large inboxes (> 10 MB) and/or large attachments. Is this right ? One user currently gets this error from Pine when accessing a large attachment: MAIL FOLDER "INBOX" CLOSED DUE TO ACCESS ERROR. AFAIK this error is related to some timeout problem. Has anyone seen this (and a solution for it) ? Thanks. Martin ----------------------------------------------------------------- Martin Preen, Universitaet Freiburg, Institut fuer Informatik Georges-Koehler-Allee, Geb.52, Zi.00-006, 79110 Freiburg, Germany phone: ++49 761 203-8250 preen(a)informatik.uni-freiburg.de fax: ++49 761 203-8242 www.informatik.uni-freiburg.de

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