- dovecot - dovecot.org

Re: [Dovecot] Using a namespace for providing access to mail snapshots for user based on-demand restoration of email backups
by Joseph Tam 09 Apr '12

09 Apr '12

A timely topic as I was just mulling over ways to provide this to my users. Charles Marcus wrote: > The snapshots are stored with the following filesystem layout: > > /path/to/snapshotsdir/hourly.0 > ... This is familiar to NetApp users. > The 'names' (hourly, daily, weekly, monthly, yearly) are arbitrary (this > is a bit confusing to people new to rsnapshot), and would *not* be used > for displaying the mail folders to the users - it is the Date/Time > stamps of each of the snapshot dirs above that would be used to display > the folder names under the 'Time Machine' namespace. This is, I imagine, > the part that will need some actual coding by Timo to get working - > maybe just some new config variables added to the namespace code for > mapping the date/time stamps of the directories to user friendly folder > names in the namespace. > > That said, I'd like to design this and have it coded such that it will > work with almost any type of backup storage that stores snapshots as > date/time stamped directories like this (there must be others, right?). One idea is to take this complexity entirely out of dovecot and create a synthetic filesystem using hard or soft links (as rsnapshot has done) and create your own, with whatever weird and wonderful naming scheme you want. /path/to/TimeMachine/<friendlylabel>/<user> -> /path/to/snapshotsdir/<snaplabel>/<user> namespace { prefix = TimeMachine location = maildir:/path/to/TimeMachine:INDEX=MEMORY ... } This might not be very scalable depending on how big your userbase is. I would probably define memory indices for this namespace, and take the performance hit on the assumption that access will be a once-in-a- while thing. On-disk indices will probably get out of date with each snapshot rollover, if if you have a lot of snapshots/mailboxes, it could consume a non-trivial amount of space without a lot of benefits. Or you could run a cron script to rename or remove old indices, but that seems more trouble than it's worth. One other consideration (at least for me) is if the INBOX and personal mail folders are stored in two separate FS's. It would be nice to fuse the two sets of backups under the same namespace, but I don't know how the namespace prefix matching works and whether you can define hierarchical namespaces like namespace { prefix = backup/inbox location = mbox:/path/to/inbox-snapdir/%u ... } namespace { prefix = backup/mail location = mbox:/path/to/mail-snapdir/%u ... } The above can also be accomplished with a synthetic filesystem. Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] 2.1.3: Overly lax FETCH parsing
by Michael M Slusarz 09 Apr '12

09 Apr '12

These commands both work in Dovecot (as of 2.1.3): 1 UID FETCH 1:* () (CHANGEDSINCE 1) * 1 FETCH (UID 30097 MODSEQ (19554)) [...] 1 OK Fetch completed. 2 FETCH 1:* () (CHANGEDSINCE 1) * 2 FETCH (MODSEQ (19554)) [...] 2 OK Fetch completed. However, RFC 3501 indicates that an empty FETCH attribute list is incorrect: fetch = "FETCH" SP sequence-set SP ("ALL" / "FULL" / "FAST" / fetch-att / "(" fetch-att *(SP fetch-att) ")") fetch-att = "ENVELOPE" / "FLAGS" / "INTERNALDATE" / "RFC822" [".HEADER" / ".SIZE" / ".TEXT"] / "BODY" ["STRUCTURE"] / "UID" / "BODY" section ["<" number "." nz-number ">"] / "BODY.PEEK" section ["<" number "." nz-number ">"] In other words, fetch-att is not allowed to be empty. (RFC 4466 does not alter this requirement when using FETCH modifiers). While useful that Dovecot is more liberal about what it receives, 3501 seems pretty clear that incorrect FETCH parameters must return a BAD. I can verify that the above commands fail on Cyrus. I don't disagree that the way Dovecot handles this is correct - or at least is the way that I wish the RFCs were written. Since this seems a bit redundant, but is necessary under the ABNF: 1 UID FETCH 1:* UID (CHANGEDSINCE 1) -or- 1 UID FETCH 1:* (UID) (CHANGEDSINCE 1) michael

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[Dovecot] lmtp sometimes fails to deliver a message to all recipients
by Artur Zaprzała 09 Apr '12

09 Apr '12

Dovecot version: 2.1.3 lmtp config: protocol lmtp { mail_plugins = zlib acl sieve } Running strace on lmtp reveals that when lmtp delivers a message to multiple recipients it saves the message to a file in the first mailbox and hard links that file to other mailboxes. But when in the meantime of delivery that file is deleted, lmtp fails to deliver the message to remaining mailboxes. For example a message for 46 recipients is delivered by lmtp to the first 12 only (fortunately postfix retries delivery for remaining recipients) and for the rest lmtp logs the following error messages: lmtp(3344, foo@domain): Error: RU1WMnueeU9QDQABxjIODQ: sieve: msgid=unspecified: failed to store into mailbox 'INBOX': Message was expunged (guid) lmtp(3344, foo@domain): Error: RU1WMnueeU9QDQABxjIODQ: sieve: script /vmail/domain/foo/.dovecot.sieve failed with unsuccessful implicit keep (user logfile /vmail/domain/foo/.dovecot.sieve.log may reveal additional details) I'm seeing this error for about 10 messages per hour. Best regards, Artur Zaprzała

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[Dovecot] Problem with polish characters and sieve fileinto
by l.chelchowski＠eurocar.pl 06 Apr '12

06 Apr '12

Hi, I have problems with sieve fileinto and polish characters in folder names: # rule:[ąćęłńóśźżĄĆĘŁŃÓŚŹŻ] elsif anyof (header :contains "Subject" "ąćęłńóśźżĄĆĘŁŃÓŚŹŻ") { fileinto "INBOX/&AQUBBwEZAUIBRADzAVsBegF8AQQBBgEYAUEBQwDTAVoBeQF7-"; } dovecot log: Apr 5 15:17:42 mailer dovecot: lmtp(54203, test(a)test1.com) rmHVJHabfU+70wAA9hAjDg: sieve: msgid=<4F7D9B68.4030206(a)test2.com>: stored mail into mailbox 'INBOX' Apr 5 15:17:42 mailer dovecot: lmtp(54203, test(a)test1.com) Error: rmHVJHabfU+70wAA9hAjDg: sieve: execution of script /home/vmail/test1.com/test//.dovecot.sieve failed, but implicit keep was successful (user logfile /home/vmail/test1.com/test//.dovecot.sieve.log may reveal additional details) Apr 5 15:17:42 mailer postfix/lmtp[54202]: 941B1E2681F: to=<test(a)test1.com>, relay=m.test1.com[private/dovecot-lmtp], delay=0.04, delays=0/0.01/0/0.03, dsn=2.0.0, status=sent (250 2.0.0 <test(a)test1.com> rmHVJHabfU+70wAA9hAjDg Saved) dovecot.sieve.log: sieve: info: started log at Apr 05 15:17:42. error: msgid=<4F7D9B68.4030206(a)test2.com>: failed to store into mailbox 'INBOX/&AQUBBwEZAUIBRADzAVsBegF8AQQBBgEYAUEBQwDTAVoBeQF7-' (INBOX/&-AQUBBwEZAUIBRADzAVsBegF8AQQBBgEYAUEBQwDTAVoBeQF7-): Mailbox doesn't exist: INBOX.&-AQUBBwEZAUIBRADzAVsBegF8AQQBBgEYAUEBQwDTAVoBeQF7-. Thanks for help. -- Pozdrawiam Łukasz

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[Dovecot] Courier to Dovecot migration script issue
by xnasx 06 Apr '12

06 Apr '12

Hi! Forgive my bad English. I trying to migrate to Dovecot 2.0.18 from Courier 4.10. I using a script 'courier-dovecot-migrate.pl' from oficial wiki - it works without errors and creating dovecot-uidlist, etc. . I running Dovecot on a different port: 11149. When I connecting to port 11149 from Thunderbird, all my message headers are reloading. Please help me to solve this issue. Best regards, Victor

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[Dovecot] Username bug in '%%' variables selects
by Victor 06 Apr '12

06 Apr '12

Hi! Forgive my bad English. I trying to set up shared folders, but I can't. I shared INBOX of 'victor(a)domain.com' for 'victor(a)testmail.domain.com' There is my debugging results: doveadm acl debug -u victor(a)testmail.domain.com INBOX.shared.victor(a)domain.com. doveadm(victor(a)testmail.domain.com): Error: Couldn't create namespace 'INBOX.shared.' for user victor@domain: userdb didn't return a home directory, but mail_location used it (%h): maildir:%h That's I seen in logs: auth-worker: Debug: sql(victor@domain): SELECT CONCAT('/var/spool/mail/', SUBSTRING_INDEX(email, '@', -1), '/', SUBSTRING_INDEX(email, '@', 1)) as home from `users` WHERE email='victor@domain' What happened with my username? 'victor@domain' is not correct value. My config: namespace { inbox = yes location = prefix = INBOX. separator = . type = private } namespace { hidden = no list = yes location = maildir:%%h prefix = INBOX.shared.%%u. separator = . subscriptions = no type = shared } password_query = \ SELECT email as username, password \ FROM users WHERE email = '%u' user_query = SELECT CONCAT('/var/spool/mail/', SUBSTRING_INDEX(email, '@', -1), '/', SUBSTRING_INDEX(email, '@', 1)) as home from `users` WHERE email='%u' Please, help me! -- Best regards, Victor

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[Dovecot] dovecot: auth: Error: ldap(...) failed: No such object
by Bruce Hammond 06 Apr '12

06 Apr '12

I just installed the 2.1.3 version of dovecot. When I telnet to my dovecot linux server on the imap port (143) and try to login I get the error "No [UNAVAILABLE] Temporary authentication failure" on the telnet display and dovecot: auth: Error: ldap(bhammond_test(a)131.103.212.38,128.121.121.193): ldap_search(base=uid=bhammond_test(a)131.103.212.38,ou=users,dc=aspect filter=(&(objectClass=posixAccount)(productFeature=mail))) failed: No such object in the /var/log/maillog. I am not familiar with ldap and I haven't been able to find anything using google. Anyone have any ideas with the problem? Thanks. Here is my configuration: # 2.1.3: /usr/local/packages/dovecot2/etc/dovecot/dovecot.conf # OS: Linux 2.6.18-274.3.1.el5.secure i686 Red Hat Enterprise Linux Server release 5.7 (Tikanga) auth_mechanisms = plain login auth_verbose = yes default_login_user = dovecot disable_plaintext_auth = no listen = * mail_location = maildir:~/mail passdb { args = /etc/devel/passdb.conf driver = ldap } pop3_lock_session = yes protocols = imap pop3 service auth { user = dovecot } service imap-login { process_limit = 128 process_min_avail = 30 service_count = 0 user = dovecot vsz_limit = 64 M } service pop3-login { process_limit = 128 process_min_avail = 30 service_count = 0 user = dovecot vsz_limit = 64 M } shutdown_clients = no ssl_cert = </etc/ssl.cert ssl_cipher_list = ALL:!LOW!SSLv2 ssl_key = </etc/ssl.key userdb { args = /usr/local/packages/dovecot2/etc/userdb.conf driver = ldap } protocol imap { imap_max_line_length = 64 k } protocol pop3 { pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_uidl_format = %08Xv%08Xu }

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[Dovecot] create mailboxes in /var/mail via doveadm
by Radim Kolar 05 Apr '12

05 Apr '12

what usedid is used by doveadm for creating mailboxes? can it be setup to run as dovecot:mail? cant create mailbox from command line ponto# ls -ld /var/mail drwxrwxr-x 8 root mail 24 Apr 5 20:35 /var/mail ponto# doveadm mailbox create -u jboss INBOX doveadm(jboss): Error: Can't create mailbox INBOX: Permission denied mail_location = maildir:%h/Maildir:INBOX=/var/mail/%u

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[Dovecot] dovecot and unison
by FZiegler 05 Apr '12

05 Apr '12

I am successfully using dovecot purely as a personal local mail store on my desktop. (There is only one account, and it's only ever accessed by local mail clients on the machine. The point is to have a common store I can use with any client; plus, I prefer dovecot's Mailbox storage to Thunderbird's mboxes.) Now I'd like if possible, to replicate this setup on my laptop and keep both in sync with unison (http://www.cis.upenn.edu/~bcpierce/unison/) which I am already using to sync much of my home dir about once a day. I found at least one positive message regarding this topic (http://dovecot.org/list/dovecot/2010-April/048092.html) but I feel I could use some more advice. Namely, which of the ancillary files should I be syncing (or perhaps deleting before sync)? In addition to the mails themselves I'm seeing: -rw------- 1 fz 501 13 Apr 1 17:10 dovecot-keywords -rw------- 1 fz 501 2483 Apr 1 17:10 dovecot-uidlist -rw------- 1 fz 501 1040 Mar 29 14:50 dovecot.index -rw------- 1 fz 501 44032 Apr 1 17:10 dovecot.index.cache -rw------- 1 fz 501 9772 Apr 1 17:10 dovecot.index.log and at the top level (in .local/var/Maildir/): -rw------- 1 fz 501 8 Apr 1 17:10 dovecot-uidvalidity -r--r--r-- 1 fz 501 0 Apr 1 17:10 dovecot-uidvalidity.4efb323d -rw------- 1 fz 501 3288 Apr 1 17:10 dovecot.mailbox.log -rw------- 1 fz 501 4104 Mar 28 10:53 dovecot.mailbox.log.2 -rw------- 1 fz 501 5114 Apr 1 17:10 subscriptions In my naive trials I ended up at least once in a situation where Thunderbird would not see some subfolders (even though they were there). That's since fixed but I guess my question is, what's the safe recommended way to not have this happen? Thanks, FZiegler

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[Dovecot] Listener not binding to port
by Mike Jones! 05 Apr '12

05 Apr '12

Hello. Dovecot is not binding or listening on port 993 when I start it. $ sudo netstat -tlnp | grep -c 993 0 Dovecot starts fine and runs without complaints. $ sudo service dovecot restart Restarting IMAP/POP3 mail server: dovecot. $ sudo tail /var/log/mail.log Apr 4 13:42:39 mwjones dovecot: master: Warning: Killed with signal 15 (by pid=16238 uid=0 code=kill) Apr 4 13:42:39 mwjones dovecot: master: Dovecot v2.0.18 starting up (core dumps disabled) $ sudo ps -ef | grep -i [d]ovecot root 16243 1 0 13:42 ? 00:00:00 /usr/sbin/dovecot -c /etc/dovecot/dovecot.conf dovecot 16245 16243 0 13:42 ? 00:00:00 dovecot/anvil root 16246 16243 0 13:42 ? 00:00:00 dovecot/log root 16248 16243 0 13:42 ? 00:00:00 dovecot/config Still no listener :( $ sudo netstat -tlnp | grep -c 993 0 Other infos for your scrutiny. $ sudo dovecot --version 2.0.18 $ doveconf -n # 2.0.18: /etc/dovecot/dovecot.conf # OS: Linux 3.2.5-grsec x86_64 Debian wheezy/sid ext4 auth_debug = yes auth_mechanisms = plain login auth_verbose = yes first_valid_uid = 1000 log_timestamp = "%Y-%m-%d %H:%M:%S " mail_debug = yes mail_location = maildir:/home/vmail/%d/%n/Maildir passdb { args = /home/vmail/%d/etc/passwd driver = passwd-file } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } user = root } service imap-login { service_count = 1 } service ssl-params { type = startup } ssl_cert = </etc/apache2/ssl/GandiStandardSSLCA.pem ssl_key = </etc/apache2/ssl/ssl.key userdb { args = /home/vmail/%d/etc/passwd driver = passwd-file } verbose_ssl = yes What am I missing and how do I fix this? Thanks, mwjones

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