[Dovecot] lazy_expunge and shared folders

Tue May 20 12:44:24 UTC 2014

Am Dienstag, 20. Mai 2014, 14:10:01 schrieben Sie:
> Am 20.05.2014 14:00, schrieb Florian:
> > 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/mdb
> > ox/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 at ...
> > 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
> > 
> > }
> 
> "perhaps" related to this
> 
> http://wiki2.dovecot.org/Plugins/Lazyexpunge
> 
> ...
> Copy only the last instance (v2.2+)
>
> If mail has multiple copies (via IMAP COPY), each copy is normally moved
> to lazy expunge namespace when it's expunged. With v2.2+ you can set
> plugin { lazy_expunge_only_last_instance = yes }  to copy only the last
> instance and immediately expunge the others. This may be useful if you
> want to provide a flat list of all expunged mails without duplicates in
> your webmail. With many clients this means that the last instance is
> always in the Trash mailbox.
> ...

Hi,

thanks, already tried with and without lazy_expunge_only_last_instance. 
(Even with explicitely set to no) unfortunately no difference, both fail 
with dovecot: imap(username): Fatal: lazy_expunge: Unknown namespace: 
'.EXPUNGED/' as soon as a folder is shared.

Btw, my dovecot -n output was with lazy_expunge disabled. It´s enabled as 
global plugin, output with lazy_expunge is:
mail_plugins = " fts fts_lucene acl lazy_expunge"

Florian

> 
> 
> 
> Best Regards
> MfG Robert Schetterer