Don't use mailbox list indexes.

In 2.1.7 they are buggy, and make Dovecot crash (when connected through
Evolution for instance). They have improved a lot since, though:

  http://hg.dovecot.org/dovecot-2.2/file/c55c660d6e9d/NEWS

1 files changed, 0 insertions, 4 deletions

diff --git a/roles/IMAP/files/etc/dovecot/conf.d/10-mail.conf b/roles/IMAP/files/etc/dovecot/conf.d/10-mail.conf
index 11a9b86..dcc1d9c 100644
--- a/roles/IMAP/files/etc/dovecot/conf.d/10-mail.conf
+++ b/roles/IMAP/files/etc/dovecot/conf.d/10-mail.conf
@@ -199,44 +199,40 @@ first_valid_gid = 1
 # need to do chrooting, Dovecot doesn't allow users to access files outside
 # their mail directory anyway. If your home directories are prefixed with
 # the chroot directory, append "/." to mail_chroot. <doc/wiki/Chrooting.txt>
 #mail_chroot = 
 
 # UNIX socket path to master authentication server to find users.
 # This is used by imap (for shared users) and lda.
 #auth_socket_path = /var/run/dovecot/auth-userdb
 
 # Directory where to look up mail plugins.
 #mail_plugin_dir = /usr/lib/dovecot/modules
 
 # Space separated list of plugins to load for all services. Plugins specific to
 # IMAP, LDA, etc. are added to this list in their own .conf files.
 mail_plugins = virtual zlib
 
 ##
 ## Mailbox handling optimizations
 ##
 
-# Mailbox list indexes can be used to optimize IMAP STATUS commands. They are
-# also required for IMAP NOTIFY extension to be enabled.
-mailbox_list_index = yes
-
 # The minimum number of mails in a mailbox before updates are done to cache
 # file. This allows optimizing Dovecot's behavior to do less disk writes at
 # the cost of more disk reads.
 #mail_cache_min_mail_count = 0
 
 # When IDLE command is running, mailbox is checked once in a while to see if
 # there are any new mails or other changes. This setting defines the minimum
 # time to wait between those checks. Dovecot can also use dnotify, inotify and
 # kqueue to find out immediately when changes occur.
 #mailbox_idle_check_interval = 30 secs
 
 # Save mails with CR+LF instead of plain LF. This makes sending those mails
 # take less CPU, especially with sendfile() syscall with Linux and FreeBSD.
 # But it also creates a bit more disk I/O which may just make it slower.
 # Also note that if other software reads the mboxes/maildirs, they may handle
 # the extra CRs wrong and cause problems.
 #mail_save_crlf = no
 
 # Max number of mails to keep open and prefetch to memory. This only works with
 # some mailbox formats and/or operating systems.