February 2006 - dovecot

[Dovecot] %d empty even though username has @domain
by William Ross 27 Mar '06

27 Mar '06

hello, Sorry to jump straight in with a question, but I've searched the archive[0] and I'm pretty sure the answer's not there. I'm using dovecot to replace courier imap, so authentication is by vpopmail and the Maildirs are stored in the usual domains/domain/user/ Maildir. Everything seems to work very well, and setting it up has been easy, so thank you very much for that. I have only one problem left: %d is empty when interpolated into default_mail_env. I expect there's something obvious I'm doing wrong, but it's hard to tell because the wiki isn't always up to date (i'd be happy to update the vpopmail sections once this is working): Config has this [1]: default_mail_env = maildir:/home/vpopmail/domains/%d/%n/Maildir and i log in over imaps with the account i'm using for testing: username: sysadmin(a)spanner.org password: ... Authentication seems to work perfectly, but then the logs show: dovecot: Dec 05 12:24:59 Info: imap(sysadmin): maildir: root=/home/ vpopmail/domains//sysadmin/Maildir, index=/home/vpopmail/domains// sysadmin/Maildir, control=, inbox= any suggestions, please? thank you, will [0] This has come up before: http://dovecot.org/list/dovecot/2005- June/007530.html [1] the rest of dovecot.conf, less comments: base_dir = /var/run/dovecot protocols = imaps log_path = /var/log/dovecot mail_debug = yes protocol imap { } protocol pop3 { } auth_verbose = yes auth default { mechanisms = plain passdb vpopmail { args = } userdb vpopmail { } userdb prefetch { } user = root } namespace private { separator = . prefix = INBOX. inbox = yes } default_mail_env = maildir:/home/vpopmail/domains/%d/%n/Maildir pop3_uidl_format = %v-%u ssl_cert_file = /usr/local/ssl/certs/dovecot.pem ssl_key_file = /usr/local/ssl/private/dovecot.pem

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[Dovecot] Clash between multiple authentication databases (security problem?)
by dovecot-ri 27 Mar '06

27 Mar '06

Hi all, I just installed dovecot-1.0_beta2 and love it! However, I've run into issues using multiple authentication databases. I use both pam (for users on my system) and sql (for virtual users). I've noticed that if I have system user "userabc" and virtual user "userabc(a)otherdomain.com" (two distinct users) and my "auth default" section contains these passdb/userdb entries in this order (the order in the example config): passdb pam passdb sql userdb pam userdb sql then when userabc(a)otherdomain.com logs in, he'll get the system user userabc's mail instead of his own. It appears that the sql password check succeeds, then Dovecot grabs the home directory from pam, NOT sql. I can work around this by setting up "userdb prefetch" and adding that section *before* "userdb pam". If I put "userdb prefetch" after "userdb pam" or after "userdb sql", then Dovecot doesn't actually do the prefetch (which causes an error since Dovecot issues the default SQL query for "user_query", which my MySQL database doesn't like). Is there a safer way to do this? If not, should there be? Thanks! Richard ====================================================== complete working dovecot.conf: ====================================================== first_valid_uid = 900 mail_debug = yes default_mail_env = maildir:%h/.maildir maildir_copy_with_hardlinks = yes protocol imap { login_greeting_capability = yes } protocol pop3 { } auth_debug = yes auth default { mechanisms = plain passdb pam { args = "*" } passdb sql { args = /etc/dovecot/dovecot-sql.conf } userdb prefetch { } userdb passwd { } userdb sql { args = /etc/dovecot/dovecot-sql.conf } user = root } ====================================================== dovecot-sql.conf: ====================================================== driver = mysql connect = host=/var/run/mysqld/mysqld.sock user=mail password=** dbname=mail default_pass_scheme = SSHA password_query = <query that returns user, password, userdb_home, userdb_uid, userdb_gid>

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[Dovecot] One dovecot, multiple domains
by Ben 22 Mar '06

22 Mar '06

Hey guys, I've got dovecot configured to work perfectly for virtual users across different domains. It's great. My problem is that, as far as I can tell, dovecot makes me use one SSL certificate across all my domains. That's not what I want. Is there a way I can get dovecot to use the cert for mail.foo.com when somebody is logging into a foo.com account, and the cert for mail.bar.com when somebody is logging into a bar.com account? Am I missing something obvious, or asking the impoosible?

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[Dovecot] Using mbox INBOX with Maildirs?
by Mark Winslow 22 Mar '06

22 Mar '06

Thanks for everybody's tips on the mbox to maildirs converter. I was unaware that Maildirs was a common format not specific to dovecot, so I was searching using a dovecot keyword. I'm having this problem now with inboxes. I want to use maildirs, but my mail is delivered to an mbox. I can't seem to get dovecot to recognize the inbox location. Is something like: maildir:%h/Maildir:INBOX=/var/mail/%u impossible to use? What I'm trying to do is slowly merge people from mboxes to maildirs, so I have to use the passwd file per user maildirs settings with some sort of recognizeable inbox. I'm using sendmail as my mail server. Do I have to tell that to put the mail in the right inbox format? Thanks. __________________________________ Discover Yahoo! Find restaurants, movies, travel and more fun for the weekend. Check it out! http://discover.yahoo.com/weekend.html

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[Dovecot] mbox to maildir conversion - good idea regarding Outlook?
by Gerhard Hofmann 14 Mar '06

14 Mar '06

Hi list, first of all, many thanks to the Dovecot authors for supplying an IMAP server that works well with M$-Outlook! I have used UW-imapd for quite a while and was annoyed by frequent "imap...timeout..." error messages. Now I'd like to give maildir format a try because I want to use email sub-folders. What are other Outlook users' experiences with maildir? Is it as stable as mbox? Regards Gerhard

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[Dovecot] Dovecot as a smart IMAP proxy
by Timo Sirainen 07 Mar '06

07 Mar '06

Do you see a use for an IMAP proxy where the proxy would be able to execute hooks which modify mail contents, such as transparent encrypting/decrypting mails, or maybe some virus-filtering? It would need at least some kind of IMAP command/reply parsing capabilities, so it might be able to do all kinds of other things. Maybe one potential use case would be Cyrus Murder-like proxying to multiple IMAP servers to distribute the mailboxes. But that might be done better as an imap process plugin, or maybe as IMAP mail storage backend. Anyway, the reason I'm asking this is because I was asked to add mail encryption/decryption capabilities to Dovecot's IMAP proxy, but I'm not sure what would be the best way to handle this. In any case it would be a plugin or a new binary which is executed instead of imap binary, but can I do it in a way that would actually be useful for Dovecot project in general?

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[Dovecot] Thunderbird 1.5 and dovecot 1.0 beta 3 problem
by Peterg 03 Mar '06

03 Mar '06

My mailhosting provider has been testing dovecot 1.0 beta 3 as a proxy server and they asked the customers if they would like to test it out and report any issues. I am using Thunderbird 1.5 (IMAP) and have been with this mailhosting company for two months and have no issues at all with their current setup which uses Perdition as their proxy servers. The problem(s) I am encountered have been reported here a few times previously over the last couple of years but in searching I have not found any concrete solutions. When I first tested it out there was a continuous problem of a failure in saving a copy of an email to the sent folder although the message was sent. One of the staff of the mailhosting company noted this exact problem as well and believed the issue was Dovecot announcing different IMAP capabilities than the real backend IMAP servers (via the CAPABILITY command). This was supposedly fixed and initially there were no issues with the first set of test emails. However, in short order, this problem re-emerged and there would be sporadic failures to copy a message to the sent folder. Another issue would be that every now and then, when clicking on a folder in the left-hand pane (and no other activity going on with Thunderbird like downloading a new mail) Thunderbird would hourglass for 10-15 seconds as if it were trying to open a connection and was having difficulty. The maximum number of connections setup in Thunderbird is the default 5 and I am advised that this is the correct setting with their servers. Reducing the maximum number of connections does not appear to change matters in terms of avoiding these problems. Changing back to the current system (ie not using the test proxy server) both these issues disappeared. I have been in communication with the mailhosting provider as to my findings but it would be most appreciated if others here would perhaps have some insight into this matter. Peter

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[Dovecot] Postfix: Command died with status 89: "/usr/lib/dovecot/deliver"
by Jacob Elder 01 Mar '06

01 Mar '06

One of our servers running Dovecot 1.0.beta3 and dovecot-lda has failed to deliver a few messages and I can't figure out why. Very few messages bounce and I don't see any common thread between them other than time. The 15:19:11 message was a company wide announcement and the other 4 servers (identical configuration) were able to deliver it. Feb 26 20:24:46 rental deliver: open(/tmp/dovecot.deliver.. 1141003486.9152.94b403f750d9ce0b) failed: Permission denied Feb 26 20:24:46 rental deliver: i_stream_stat() failed with mbox file (read-only mbox stream): Permission denied Feb 26 20:24:46 rental deliver: Can't sync delivery mail Feb 27 09:57:13 rental deliver: open(/tmp/dovecot.deliver.. 1141052233.12958.20786c4677df8930) failed: Permission denied Feb 27 09:57:13 rental deliver: i_stream_stat() failed with mbox file (read-only mbox stream): Permission denied Feb 27 09:57:13 rental deliver: Can't sync delivery mail Feb 28 09:00:25 rental deliver: open(/tmp/dovecot.deliver.. 1141135225.20088.aedaad0b0720edda) failed: Permission denied Feb 28 09:00:25 rental deliver: i_stream_stat() failed with mbox file (read-only mbox stream): Permission denied Feb 28 09:00:25 rental deliver: Can't sync delivery mail Feb 28 15:19:11 rental deliver: open(/tmp/dovecot.deliver.. 1141157951.21988.6a7426202e533221) failed: Permission denied Feb 28 15:19:11 rental deliver: i_stream_stat() failed with mbox file (read-only mbox stream): Permission denied Feb 28 15:19:11 rental deliver: Can't sync delivery mail Feb 28 15:19:11 rental deliver: open(/tmp/dovecot.deliver.. 1141157951.21990.6a7426202e533221) failed: Permission denied Feb 28 15:19:11 rental deliver: i_stream_stat() failed with mbox file (read-only mbox stream): Permission denied Feb 28 15:19:11 rental deliver: Can't sync delivery mail Feb 28 15:19:11 rental deliver: open(/tmp/dovecot.deliver.. 1141157951.21992.6a7426202e533221) failed: Permission denied Feb 28 15:19:11 rental deliver: i_stream_stat() failed with mbox file (read-only mbox stream): Permission denied Feb 28 15:19:11 rental deliver: Can't sync delivery mail Feb 28 15:19:11 rental deliver: open(/tmp/dovecot.deliver.. 1141157951.21993.6a7426202e533221) failed: Permission denied Feb 28 15:19:11 rental deliver: i_stream_stat() failed with mbox file (read-only mbox stream): Permission denied Feb 28 15:19:11 rental deliver: Can't sync delivery mail -- Jacob Elder

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[Dovecot] Maildir Quotas
by wink＠gettcomm.com 28 Feb '06

28 Feb '06

Hey guys, Does anyone have any ideas as to when this may be implemented? I'd love to be able to use dovecot, but without quota support, it just won't fit the bill. Is there any developer documentation as to what would be required to fully support maildir quotas as I'd be willing to help implement it assuming it's not going to take me weeks to become familiar enough with the codebase. Thanks

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[Dovecot] using dovecot for postfix sasl
by h＠hpjt.net 28 Feb '06

28 Feb '06

I have followed the Dovecot/Postfix/SASL howto, and modified the main.cf and dovecot.conf files, yet when trying to authenticate during a postfix SMTP session the log reports: "postfix/smtpd....warning: SASL authentication failure: Could not open db" Dovecot itself is authenticating IMAP logins correctly, and it is creating the auth file in the location specified under /var/spool/postfix/private. Why is postfix not able to get to the Dovecot auth mechanism? Thanks. Hugh

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