Remove the IMAP caching proxy.

Dovecot imapc requires two authentication rounds to the IMAP backend for
each connection.  It seems suboptimal that Roundcube keeps connecting to
the IMAP server for each new connection, but benchmarks shows little
advantage in caching the IMAP sessions with imapproxy:

  http://www.dovecot.org/list/dovecot/2012-February/133544.html

1 files changed, 0 insertions, 80 deletions

diff --git a/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-master.conf b/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-master.conf
deleted file mode 100644
index 76c7ed0..0000000
--- a/roles/IMAP-proxy/files/etc/dovecot/conf.d/10-master.conf
+++ /dev/null
@@ -1,80 +0,0 @@
-#default_process_limit = 100
-#default_client_limit = 1000
-
-# Default VSZ (virtual memory size) limit for service processes. This is mainly
-# intended to catch and kill processes that leak memory before they eat up
-# everything.
-#default_vsz_limit = 256M
-
-# Login user is internally used by login processes. This is the most untrusted
-# user in Dovecot system. It shouldn't have access to anything at all.
-default_login_user = dovenull
-
-# Internal user is used by unprivileged processes. It should be separate from
-# login user, so that login processes can't disturb other processes.
-default_internal_user = dovecot
-
-service imap-login {
-  inet_listener imap {
-    address = 127.0.0.1
-    port = 143
-    ssl = no
-  }
-  inet_listener imaps {
-    port = 0
-  }
-
-  # Number of connections to handle before starting a new process. Typically
-  # the only useful values are 0 (unlimited) or 1. 1 is more secure, but 0
-  # is faster. <doc/wiki/LoginProcess.txt>
-  service_count = 1
-
-  # Max. number of IMAP processes (logins)
-  process_limit = 256
-
-  # Number of processes to always keep waiting for more connections.
-  process_min_avail = 4
-
-  # If you set service_count=0, you probably need to grow this.
-  #vsz_limit = $default_vsz_limit
-}
-
-service imap {
-  # Most of the memory goes to mmap()ing files. You may need to increase this
-  # limit if you have huge mailboxes.
-  #vsz_limit = $default_vsz_limit
-
-  # Max. number of IMAP processes (connections)
-  #process_limit = 1024
-}
-
-service auth {
-  # auth_socket_path points to this userdb socket by default. It's typically
-  # used by dovecot-lda, doveadm, possibly imap process, etc. Users that have
-  # full permissions to this socket are able to get a list of all usernames and
-  # get the results of everyone's userdb lookups.
-  #
-  # The default 0666 mode allows anyone to connect to the socket, but the
-  # userdb lookups will succeed only if the userdb returns an "uid" field that
-  # matches the caller process's UID. Also if caller's uid or gid matches the
-  # socket's uid or gid the lookup succeeds. Anything else causes a failure.
-  #
-  # To give the caller full permissions to lookup all users, set the mode to
-  # something else than 0666 and Dovecot lets the kernel enforce the
-  # permissions (e.g. 0777 allows everyone full permissions).
-  unix_listener auth-userdb {
-    #mode = 0666
-    #user =
-    #group =
-  }
-
-  # Auth process is run as this user.
-  user = $default_internal_user
-}
-
-service auth-worker {
-  # Auth worker process is run as root by default, so that it can access
-  # /etc/shadow. If this isn't necessary, the user should be changed to
-  # $default_internal_user.
-  user = $default_internal_user
-}