- dovecot - dovecot.org

Bug in quota_get_status
by Franz Knipp 03 Jul '14

03 Jul '14

Hi, the configuration option lmtp_rcpt_check_quota = yes didn't work, so I traced down the problem: quota_get_status (quota_storage.c:89) calls quota_test_alloc (quota.c:1352) with size = 0 bytes, which leads always to a FALSE result in quota_is_over (quota.c:1305). I've fixed the function quota_is_over by considering ctx->bytes_over and ctx->count_over. See the included patch. Kind regards, Franz -- Franz Knipp, +43 664 3980169 qnipp GmbH, Hauptstraße 54, 7064 Oslip, Österreich http://qnipp.com http://qnipp.com/qnipp.vcf

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Mailboxes are in Maildir format. Any good backup tips? Had success with version control?
by deoren 03 Jul '14

03 Jul '14

I'm still pretty new to running a mail server, but one thing I've come to appreciate over the years is a good backup strategy. Since I have always run my own servers for practice and for personal use I don't have access to Enterprise backup solutions. Because of that I usually just fall back to scripts and tarballs and offload the content on a regular basis. Right now I'm using LVM snapshots + tarballs for daily backups, but I'd like to get better coverage for incremental changes that occur throughout the day. The size of existing content is low, but (small) changes are frequent. I went with Maildir format because based on my reading it is referred to as time tested and corruption resistant. Because individual emails are stored as separate files this also leads me to believe that a version control system (Git, SVN) would allow for easy point in time restores. I'm also going to research the GNU tar utility's support for incremental archives as that sounds promising. Suggestions and warnings are most welcome. Thanks!

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doveadm director userdb
by G H 03 Jul '14

03 Jul '14

How do you configure an iterate_query SQL lookup for the doveadm director? I tried: service director { userdb { ... } } but userdb is not a valid stanza for director. I do not have a default userdb stanza, all my userdb definitions are specified in service imap/lda/lmtp blocks. Thanks. G H

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Re: Shared folders not listed by IMAP
by john.j.rowan.jr＠gmail.com 02 Jul '14

02 Jul '14

. t,yV e Sent from my Verizon Wireless 4GLTE smartphone ----- Reply message ----- From: "Giedrius Liubavičius" <giedrius(a)su.lt> To: <dovecot(a)dovecot.org> Subject: Shared folders not listed by IMAP Date: Wed, Jul 2, 2014 14:03 OK, This is the problem why your configuration is not working. My shared folder did not work up until I fixed auth-userdb permissions in a way so that user my A (not dovecot user) [test(a)mydomain.pl in your case] could connect to it and get info about user B [test2(a)mydomain.pl in your case] Just change the auth-userdb file location (and probably permissions) or duplicate it to real root location. either from within configuration files or just as a plain symlink (maybe pre-login script ?) 2014.07.02 19:03, Bambero rašė: > But the problem is that I can't see shared folders to subscribe (shared by > other users) while connecting via IMAP. > > There is also an error: > Error: userdb lookup: connect(/var/dovecot/auth-userdb) failed: No such > file or directory > > Probably becouse of chroot (/var/mail). > > > On Wed, Jul 2, 2014 at 1:29 PM, Giedrius Liubavičius <giedrius(a)su.lt> wrote: > >> Hi, >> doveadm mailbox subscribe -u test(a)mydomain.pl Shared/test2(a)mydomain.pl >> doveadm mailbox subscribe -u test(a)mydomain.pl >> Shared/test2(a)mydomain.pl/Sent >> >> 2014.07.02 14:04, Bambero rašė: >>> Hello >>> >>> I just upgraded my system and there is a problem with shared mailboxes. >>> >>> When I use the doveadm command I can see shared folders: >>> >>> doveadm mailbox list -u 'test(a)mydomain.pl' >>> Drafts >>> Sent >>> Spam >>> Trash >>> Shared >>> Virtuals >>> Virtuals/all >>> Shared/test2(a)mydomain.pl >>> Shared/test2(a)mydomain.pl/Sent >>> INBOX >>> >>> But I can't see them over IMAP protocol. >>> >>> Some config opts: >>> >>> valid_chroot_dirs = /var/mail >>> mail_chroot = /var/mail >>> >>> namespace { >>> type = shared >>> separator = / >>> prefix = Shared/%%u/ >>> location = maildir:/%%u/Maildir:INDEX=~/Maildir/Shared/%%u >>> subscriptions = yes >>> list = yes >>> } >>> >>> plugin { >>> acl = vfile:cache_secs=5 >>> } >>> >>> plugin { >>> acl_shared_dict = file:/var/mail/%i.db >>> } >>> >>> protocol imap { >>> mail_plugins = $mail_plugins imap_quota imap_acl imap_zlib >>> } >>> >>> >>> My version of dovecot is 2.2.10. >>> >>> Regards >>> Bambero >>> >> >>

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Re: Shared folders not listed by IMAP
by john.j.rowan.jr＠gmail.com 02 Jul '14

02 Jul '14

Sent from my Verizon Wireless 4GLTE smartphone ----- Reply message ----- From: "Giedrius Liubavičius" <giedrius(a)su.lt> To: <dovecot(a)dovecot.org> Subject: Shared folders not listed by IMAP Date: Wed, Jul 2, 2014 14:03 OK, This is the problem why your configuration is not working. My shared folder did not work up until I fixed auth-userdb permissions in a way so that user my A (not dovecot user) [test(a)mydomain.pl in your case] could connect to it and get info about user B [test2(a)mydomain.pl in your case] Just change the auth-userdb file location (and probably permissions) or duplicate it to real root location. either from within configuration files or just as a plain symlink (maybe pre-login script ?) 2014.07.02 19:03, Bambero rašė: > But the problem is that I can't see shared folders to subscribe (shared by > other users) while connecting via IMAP. > > There is also an error: > Error: userdb lookup: connect(/var/dovecot/auth-userdb) failed: No such > file or directory > > Probably becouse of chroot (/var/mail). > > > On Wed, Jul 2, 2014 at 1:29 PM, Giedrius Liubavičius <giedrius(a)su.lt> wrote: > >> Hi, >> doveadm mailbox subscribe -u test(a)mydomain.pl Shared/test2(a)mydomain.pl >> doveadm mailbox subscribe -u test(a)mydomain.pl >> Shared/test2(a)mydomain.pl/Sent >> >> 2014.07.02 14:04, Bambero rašė: >>> Hello >>> >>> I just upgraded my system and there is a problem with shared mailboxes. >>> >>> When I use the doveadm command I can see shared folders: >>> >>> doveadm mailbox list -u 'test(a)mydomain.pl' >>> Drafts >>> Sent >>> Spam >>> Trash >>> Shared >>> Virtuals >>> Virtuals/all >>> Shared/test2(a)mydomain.pl >>> Shared/test2(a)mydomain.pl/Sent >>> INBOX >>> >>> But I can't see them over IMAP protocol. >>> >>> Some config opts: >>> >>> valid_chroot_dirs = /var/mail >>> mail_chroot = /var/mail >>> >>> namespace { >>> type = shared >>> separator = / >>> prefix = Shared/%%u/ >>> location = maildir:/%%u/Maildir:INDEX=~/Maildir/Shared/%%u >>> subscriptions = yes >>> list = yes >>> } >>> >>> plugin { >>> acl = vfile:cache_secs=5 >>> } >>> >>> plugin { >>> acl_shared_dict = file:/var/mail/%i.db >>> } >>> >>> protocol imap { >>> mail_plugins = $mail_plugins imap_quota imap_acl imap_zlib >>> } >>> >>> >>> My version of dovecot is 2.2.10. >>> >>> Regards >>> Bambero >>> >> >>

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Android Sync Doesn't Work Too Good
by Asai 02 Jul '14

02 Jul '14

Greetings, I'm getting reports from a user who's reading and deleting mail on Thunderbird, but read flags and deletions don't show up in his Android phone. He's using the native Android mail app with the newest Android OS. My question is, where do I start with troubleshooting this kind of issue? Thanks for anyone's insight here. We're using Dovecot 2.2.13. -- --Asai

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Re: number of users
by Reindl Harald 02 Jul '14

02 Jul '14

Am 02.07.2014 16:10, schrieb Jonathan Tripathy: > On 2014-07-02 15:04, Reindl Harald wrote: >> Am 02.07.2014 16:01, schrieb ihab: >>> i using roundcube with dovecot, i have a question if there is possible to >>> know the number of users that using the mail system (in other word the >>> online users) >> >> no - how do you imagine that? >> >> * roundcube is a web-application >> * HTTP is stateless >> * so there are no permanent connections > > It is possible as Roundcube does have its own session management, which you could maybe hook into first: why do you respond off-list? second: any of such magic is outside of dovecots scope and from security point of view you don't want user-login-sessions dealing with other users session infos and any smart session-backend is doing what it can to prevent from such a breach

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[Dovecot] TLS/SSL for Win8 & Outlook
by Sebastian Goodrick 02 Jul '14

02 Jul '14

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello I recently upgraded to dovecot 2.1.7 (as supplied with Debian Weezy). All clients work as expected except for Outlook (2013 &2010) on Win8 with a SSL/TLS connection. (Thunderbird on Win8 and Outlook 2013 on Win 7 works fine. On my previous dovecot version 1.2.13 all clients worked.) As far as I understand, one difference is the support for TLS1.2 and SSL3. And on the client side Win8 is now connecting through the Microsoft Unified Security Protocol Provider. My logs show these issues: Dovecot: May 06 21:05:43 imap-login: Warning: SSL: where=0x2002, ret=-1: SSLv3 read client certificate A [78.42.x.x] May 06 21:05:43 imap-login: Warning: SSL: where=0x2002, ret=-1: SSLv3 read client certificate A [78.42.x.x] May 06 21:05:43 imap-login: Warning: SSL failed: where=0x2002: SSLv3 read client certificate A [78.42.x.x] May 06 21:05:43 imap-login: Info: Disconnected (no auth attempts in 0 secs): user=<>, rip=78.42.x.x, lip=144.76.x.x, TLS handshaking: Disconnect Outlook 2013 (contains German, translation in []): IMAP: 12:30:02 [db] Mit 'mail.xxx.de' wird eine Verbindung an Port 143 hergestellt. [A connection to port 143 is established with 'mail.xxx.de'] [snip] IMAP: 12:30:02 [rx] * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN AUTH=DIGEST-MD5 AUTH=CRAM-MD5] Welcome at mail.xxx.de [snip] IMAP: 12:30:02 [rx] hmpc OK Pre-login capabilities listed, post-login capabilities have more.IMAP: 12:30:02 [tx] ekum STARTTLS IMAP: 12:30:02 [db] OnNotify: asOld = 5, asNew = 5, ae = 3 IMAP: 12:30:02 [rx] ekum OK Begin TLS negotiation now. IMAP: 12:30:02 [db] Mit 'Microsoft Unified Security Protocol Provider' wird eine sichere Verbindung ausgehandelt. [A secure connection is negotiated with 'Microsoft Unified Security Protocol Provider'] IMAP: 12:30:02 [db] OnNotify: asOld = 5, asNew = 6, ae = 2 IMAP: 12:30:03 [db] Die Verbindung mit 'mail.xxx.de' wurde geschlossen. [Connection to 'mail.xxx.de' has been closed.] IMAP: 12:30:03 [db] OnNotify: asOld = 6, asNew = 0, ae = 5 IMAP: 12:30:03 [db] ERROR: "Es kann keine sichere Verbindung mit dem Server hergestellt werden.", hr=2148322330 [Can't establish a secure connection with the server.] My settings for ssl_protocols and ssl_cipher_list are empty. Since it works with most clients, I assume no broken certificates or my dovecot configuration. The connection fails at the TLS/SSL handshake. Has anyone seen this behaviour, too? Is there a setting (for ssl_protocols and ssl_cipher_list) to support Outlook on Win8? Thanks, Sebastian -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlNqhkwACgkQR7+YB0QzbnqEFQCdHBPPpFB/pqgZ9FR81h/vcGy5 hkoAn2iuq+AUwQCN3yEtGIWuPAfpm2bs =WrvL -----END PGP SIGNATURE-----

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Re: number of users
by Jonathan Tripathy 02 Jul '14

02 Jul '14

On 2014-07-02 15:04, Reindl Harald wrote: > Am 02.07.2014 16:01, schrieb ihab: >> i using roundcube with dovecot, i have a question if there is >> possible to >> know the number of users that using the mail system (in other word >> the >> online users) > > no - how do you imagine that? > > * roundcube is a web-application > * HTTP is stateless > * so there are no permanent connections It is possible as Roundcube does have its own session management, which you could maybe hook into.

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[Dovecot] lazy_expunge and shared folders
by Florian 02 Jul '14

02 Jul '14

Hi, since migration to Dovecot 2.2 I have troubles with lazy_expunge as soon as a user shares a folder. The user the folder is shared to cannot login anymore, dovecot logs Fatal: lazy_expunge: Unknown namespace: '.EXPUNGED/' - When no folder is shared lazy_expunge is working fine, deleted mails are moved to the expunged namespace and can be recovered without any problems. - Sharing folders works as long as I disable lazy_expunge. I have used the config (with minor changes) with dovecot 2.0 for years without any problem. Switching to dovecot 2.2.10 (atrps repository) or 2.2.12 (dovecot enterprise repo) lazy_expunge and acl do not work together anymore. Is it a bug, a known limitation or is something wrong with my config? Any hints are welcome. Thanks in advance, Florian dovecot -n # 2.2.12.12 (03196f188677): /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-042stab085.20 x86_64 CentOS release 6.5 (Final) auth_cache_negative_ttl = 10 mins auth_cache_size = 10 M auth_cache_ttl = 2 hours auth_failure_delay = 10 secs auth_mechanisms = plain login auth_socket_path = /var/run/dovecot/auth-userdb base_dir = /var/run/dovecot/ disable_plaintext_auth = no first_valid_gid = 105 first_valid_uid = 105 hostname = ... imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags imap_idle_notify_interval = 10 mins last_valid_uid = 105 listen = ... lmtp_save_to_detail_mailbox = yes login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c mail_gid = vimap mail_home = /var/imap/spool/%1n/%n mail_location = mdbox:~/mdbox mail_plugins = " fts fts_lucene acl" mail_temp_dir = /var/imap/tmp mail_uid = vimap managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave mbox_write_locks = fcntl mdbox_rotate_interval = 1 days namespace { list = children location = mdbox:/var/imap/spool/%%1n/%%n/mdbox:INDEXPVT=/var/imap/spool/%1n/%n/mdbox/shared/%%u prefix = User/%%u/ separator = / subscriptions = no type = shared } namespace expunged { hidden = yes list = no location = mdbox:/var/imap/spool/%1n/%n/mdbox:MAILBOXDIR=expunged prefix = .EXPUNGED/ separator = / subscriptions = no type = private } namespace inbox { inbox = yes location = mdbox:/var/imap/spool/%1n/%n/mdbox mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Learn { auto = subscribe } mailbox Learn/Ham { auto = subscribe } mailbox Learn/Spam { auto = subscribe } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } mailbox virtual/All { special_use = \All } mailbox virtual/Flagged { special_use = \Flagged } prefix = separator = / type = private } passdb { args = /etc/dovecot/master-users driver = passwd-file master = yes } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } passdb { args = /etc/dovecot/extra-users driver = passwd-file } plugin { acl = vfile:/var/imap/global-acls:cache_secs=300 acl_shared_dict = file:/var/imap/shared-mailboxes/shared-mailboxes fts = lucene fts_autoindex = yes fts_lucene = whitespace_chars=@. lazy_expunge = .EXPUNGED/ lazy_expunge_only_last_instance = yes recipient_delimiter = + sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_max_actions = 32 sieve_max_redirects = 4 sieve_max_script_size = 1M } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh postmaster_address = postmaster@... protocols = imap pop3 lmtp sieve service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vimap mode = 0600 user = vimap } user = $default_internal_user } service imap-login { process_min_avail = 4 service_count = 0 } service imap { process_limit = 1024 vsz_limit = 256 M } service lmtp { inet_listener lmtp { address = ... port = 24 } } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } service_count = 1 vsz_limit = 64 M } service pop3-login { inet_listener pop3s { port = 995 ssl = yes } process_min_avail = 4 service_count = 0 } service pop3 { process_limit = 512 } ssl_cert = </etc/dovecot/ssl/... ssl_key = </etc/dovecot/ssl/... userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } userdb { args = uid=vimap gid=vimap home=/var/imap/spool/%1n/%n driver = static } protocol lda { mail_plugins = " fts fts_lucene acl sieve" } protocol imap { mail_max_userip_connections = 20 mail_plugins = " fts fts_lucene acl imap_acl" } protocol lmtp { mail_plugins = " fts fts_lucene acl sieve" } protocol sieve { mail_max_userip_connections = 10 managesieve_implementation_string = Dovecot Pigeonhole managesieve_logout_format = bytes=%i/%o managesieve_max_line_length = 65536 } protocol pop3 { mail_max_userip_connections = 20 }

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