- dovecot - dovecot.org

[Dovecot] strange connection NG
by Yi Xuan 16 Dec '05

16 Dec '05

Dear all, I have a devocot server based on fedora core 3 in Japan. When my users are in Japan, there is no any problem reported.Devocot works very well. But when my users are in China, sometimes the following problem occured. Sometimes the user can not download mails, after that all connections attempt to server(e.g http/ssh) failed. the user has to close OutLook, and wait for about 10 minutes, then access the webmail to read mail. Maybe the POP NG is due to the network , but what is the possible reason of 10-minute other connection NG? Is there any solution? Because users in China share the same outside IP, when one user occures POP NG, all users occures server access NG, that is a big puzzle. Thanks in advance. Best regards,

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[Dovecot] Patch: ioloop using kqueue/kevent for FreeBSD
by Vaclav Haisman 16 Dec '05

16 Dec '05

Hi, I would like to submit the attached patch. It implements IO loop using FreeBSD's kqueue/kevent syscalls. It is based on snapshot of CVS HEAD as of 2005-12-12. I could only give it limited testing on FreeBSD 5.4 but it works fine so far. Vaclav Haisman

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[Dovecot] 1.0alpha5 released
by Timo Sirainen 16 Dec '05

16 Dec '05

We have now some new big features: - Beginnings of dbox mailbox format. It should work, but if you happen to delete/break index files, the mails aren't found again. So really not a good idea to use it for more than testing. - GSSAPI (Kerberos 5) support by Jelmer Vernooij with some fixes by pod(a)herald.ox.ac.uk - Added dictionary API to Dovecot, similar to what Postfix has. It can be used for getting/setting key=value pairs, which can be useful for many different purposes. For example it could be used to store mailbox metadata for ANNOTATEMORE extension. Implemented SQL backend for it. In future there should be berkeley DB backend at least. Also there could be some kind of proxy backend which would use UNIX socket to connect to dictionary server doing the actual work. This way each imap/lda process wouldn't have to connect to SQL server themself. - Quota plugin is now included. We also have now dictionary based quota support, which means the quota limits and values can be stored in SQL. However I haven't actually tested these changes yet, so there's a good chance the quota plugin doesn't actually work at all. - Created a new trash plugin which works only together with quota plugin. The point of it is to expunge mails from a list of configurable mailboxes whenever saving new mails would cause the account to go over quota. The oldest mails are expunged first, and only as many mails are expunged as is needed to save the new mail. For configuration it first looks up for ~/.dovecot.trash.conf, and then fallbacks to /etc/dovecot-trash.conf. The file format is "<priority> <mailbox name>". It's possible to have multiple mailboxes with same priority. Lower number = higher priority. This plugin is also currently untested. The plugins are currently installed as shared libraries to plugin directory. At some point I'll add a configure option to select which plugins to compile directly into binaries. Possibly even do it by default for some plugins (quota). And smaller new features: - If LDAP lookup fails because connection gets closed, try retrying it again after reconnect. This is however untested, hopefully didn't break LDAP code completely.. - %w variable in dovecot-auth contains password. Can be used to do eg.: password_query = select null as password from users where userid = '%u' and password = password('%w') - syslog_facility setting And fixes: - auth_cache was quite broken - adding keywords caused sometimes assert-crash - If login_greeting_capability = yes we could have sent the capability before dovecot-auth returned what auth mechanisms were available, forcing clients to use plaintext authentication - Lots of mbox fixes again.. - userdb prefetch wasn't supposed to be uncommented in dovecot-example.conf in alpha4. Comment it out if you don't need it. - Don't crash with "out of memory" in 64bit systems - IDLE command might have crashed when finishing itself if there were lots of external changes - pop3_reuse_xuidl setting wasn't actually working

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[Dovecot] Logging IMAP deletions
by Jan-Piet Mens 16 Dec '05

16 Dec '05

I'm using dovecot-1.0.alpha5 and I'd like to be able to log the fact that a message has been deleted (or marked for deletion) in order to prove to end-users that they actually deleted a message. Is that possible? -JP

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[Dovecot] messages_count too large (1121 > 1115)
by Moritz Willers 16 Dec '05

16 Dec '05

I've seen this was mentioned before but remains unsolved. I upgraded Dovecot from 0.99 to v1.0.alpha4 yesterday and it rendered my inbox inaccessible: Dec 15 00:09:07 sand dovecot: imap(willers): Corrupted index file /home/willers/mail/.imap/INBOX/dovecot.index: messages_count too large (1121 > 1115) I've since moved that inbox away so I can view my new mail again. The error has moved with the mbox file: Dec 15 00:27:41 sand dovecot: imap(willers): Corrupted index file /home/willers/mail/old-inbox/.imap/200407-200512/dovecot.index: messages_count too large (1121 > 1115) Dec 15 00:27:41 sand dovecot: child 83886 (imap) killed with signal 11 This is on FreeBSD 4.8 (yes, yes ... but: "up 687 days" which is quite nice) all running on local disk. So earlier suspicions about NFS or MacOS X are out of the window. One day I'll move move from mbox to dir format and the problem will go away, in the meanwhile, I thought it would be good to resolve this issue. Let me know how I can help to get to the bottom of this. - mo

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[Dovecot] Best way to upgrade from 1.0a4 to 1.0a5
by Cliff Hayes 16 Dec '05

16 Dec '05

Hello all, I have 1.0 Alpha 4. Is it better to shut down sendmail, uninstall dovecot 1.0a4 then install 1.0a5, or just install 1.0a5 over the top of 1.0a4? Thanks, Cliff

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[Dovecot] Variable '%r' doesn't transfomr in Postgres query
by Sebastjan Trepca 15 Dec '05

15 Dec '05

Hi, i'm using postgres for authorization. When I switched from a4 to a5 authorization stoped working. Query in conf file for postgres looks like this: password_query = select password from auth('%u','%r'); But in logs, the transformed query looks like this: Performing query: select password from auth('test','%r'); Looks like you don't transform that remote IP parameter? Sebastjan

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[Dovecot] writing an MDA, help me avoid corrupted indexes
by Lee Howard 15 Dec '05

15 Dec '05

Hello. First, I want to thank those responsible for Dovecot IMAP as it was a real treat to implement in comparison to my mostly-failed attempts with Cyrus. The passwd-file authentication was exactly what I needed as I really didn't want to have to deal with PAM or LDAP but where I am setting up a server with virtual accounts. I'm using Postfix as an MTA, and it quite handily passes the mail off to SpamAssassin. From there I need an MDA to dump any mails detected as spam into a common spam folder, discard any mails with viruses (antivir) and send a notification to me, and then drop good mail into the appropriate maildir directory for the virtual users to get via both POP3 and IMAP. I could conceivably use procmail to do that MDA, and I've done similar things with procmail in the past, but my growing experience with procmail indicates that procmail is too ferocious for what simple work I need done, and too difficult to make work right in a virtual-user environment. So I've written my own little MDA with a few lines of shell that will take the mail from Postfix+SpamAssassin and ultimately deposit mails in the maildirs. So far so good, except that I keep seeing corrupt indexes... probably because I'm not touching the indexes at all with the MDA. My guess is that in order for the MDA to properly deal with maildir it needs to adjust the indexes after depositing new mail. Okay. So can someone either give me a pointer to the proper documentation on this, including the index file formats, or perhaps just explain it to me? Maybe I'm missing a larger picture of maildir handling? I've glanced through http://www.dovecot.org/doc/index.txt but I notice that the index files are not ASCII, so I'm not sure where to start at understanding that documentation. Any and all help would be appreciated. Thanks, Lee.

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[Dovecot] assertion failed: (conn->refcount > 1)
by David Schweikert 15 Dec '05

15 Dec '05

Hi, Sometimes (happens maybe twice in a day), I have the following errors: Dec 15 16:10:17 dovecot: auth(default): file auth-client-connection.c: line 33 (auth_client_send): assertion failed: (conn->refcount > 1) Dec 15 16:10:17 dovecot: child 17152 (auth) killed with signal 6 Dec 15 16:10:17 dovecot: imap-login: Can't connect to auth server at default: Connection refused Dec 15 16:10:17 dovecot: imap-login: Can't connect to auth server at default: Connection refused Dec 15 16:10:17 dovecot: imap-login: Can't connect to auth server at default: Connection refused Dec 15 16:10:17 dovecot: imap-login: Can't connect to auth server at default: Connection refused Dovecot seems to recover though, because afterwards it still works. I did however notice that the logging-in seemed to hang for a while (some seconds). Cheers David -- David Schweikert | phone: +41 44 632 7019 System manager ISG.EE | walk: ETH Zentrum, ETL F24.1 ETH Zurich, Switzerland | web: http://people.ee.ethz.ch/dws

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[Dovecot] How to serve two "inboxes" via imap
by Roderick Johnstone 15 Dec '05

15 Dec '05

Hi In our setup we have mail delivered to /var/spool/mail/<username>. Many users like thunderbird as their MUA and we typically have thunderbird set up to read mail using a movemail account with the local mail directory set to ~/mail so that the mail can be read easily by pine as well. So, when a user clicks the "Get Mail" button in Thunderbird, mail is moved from /var/spool/mail/<username> to ~/mail/Inbox. Although I can serve other folders from ~/mail my imap clients don't see ~/mail/Inbox, they see just /var/spool/mail/<username> as INBOX. Can anyone advise please how to make the ~/mail/Inbox available as well via imap using dovecot (currently using 1.0-alpha5). We currently use default_mail_env = mbox:~/mail/:INBOX=/var/spool/mail/%u Many thanks Roderick Johnstone

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