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       bincimap.conf - Global configuration file for Binc IMAP


       A section of a bincimap.conf file might look something like this:

              Authentication {
                  allow plain auth in non ssl = "no",
                  auth penalty = 4,
                  disable starttls = "no"


       This  manual  page  describes  the  format  and  content  of  the  file
       bincimap.conf.  First comes a summary of sections of options that users
       can set, then we describe the bincimap.conf structure more in detail.

       All  Binc IMAPs configuration files use the same Binc::Storage format.
       It’s basically a sequence of named sections enclosed in {braces},  each
       containing  a  set of comma separated key=value pairs. The keys must be
       alphanumeric, and the values can contain any character if it’s  quoted.


       Options  are presented in the format Section::name.  To set the option,
       enter the name with no quotes in the section  as  described  in  FORMAT

       The following options can be set in bincimap.conf.

       Authentication::allow plain auth in non ssl = [yes|no]
              If  yes,  allows  plain  text  authentication  in an unencrypted
              (SSL/TLS) IMAP session.

       Authentication::auth penalty = <n>
              Server will sleep  for  <n>  seconds  if  the  client  issues  a
              username/password pair that fails to authenticate.

       Log::environment ip variable = <var>
              Which  environment  variable  bincimapd  should  search  for the
              remote host IP in.

       Log::syslog facility = <var>
              If syslog mode is used, sets the facility to log to. Default  is
              LOG_DAEMON.      Allowed     values     are     LOG_USER     and

       Log::syslog facility number = <nr>
              If syslog mode is used, sets the  facility  number  to  log  to.
              Default is the value of LOG_DAEMON.

       Log::type = <type>
              Which  method  Binc  IMAP  should  use  to log.  syslog means to
              connect  to  syslog.   multilog  means  to  log  to   stderr(2).
              Typically  used  together with the multilog utility. For xinetd,
              use syslog.  For daemontools/supervise, use multilog.

       Mailbox::type = <type>
              Which type of mailbox should the server use?  By  default,  only
              supports only Maildir.

       Mailbox::depot = <type>
              Which  type of depot should the server use? By default, supports
              only IMAPdir and Maildir++.

       Mailbox::path = <path>
              Path to depot relative from user’s home area. Typically  Maildir
              for  Maildir  mailboxes, or the empty string "" if the home area
              is the same as the Maildir directory.

       Mailbox::auto create inbox = [yes|no]
              If yes, server will create the default mailbox  INBOX  on  first
              login if it does not exist.

       Mailbox::auto subscribe mailboxes = <mailboxes>
              If  present,  server  will automatically subscribe client to the
              given list of mailboxes on first login. Mailbox list is given as
              a  comma separated list with the mailbox’ full path, for example

       Mailbox::umask = <umask>
              Server will use  this  umask  throughout  session.  Defaults  to
              user’s default umask.

       Security::jail path = <path>
              Which   path   bincimap-up   should  chroot  to  after  starting

       Security::jail user = <userid>
              Which user bincimap-up should become after starting bincimapd.

       Security::jail group = <groupid>
              Which group bincimap-up should enter after starting bincimapd.

       Security::version in greeting = [yes|no]
              When set to "yes", Binc IMAP will display its version number  in
              the  greeting  displayed to clients when they connect; otherwise
              no version number is displayed. This version  number  is  useful
              for debugging and identifying the service, but it is also useful
              for malicious users who wish to  identify  versions  to  exploit
              known security holes.

       Session::idle timeout = <n>
              When  the  server  is in authenticated mode, and does not detect
              any client activity, it will wait  <n>  seconds  before  closing
              (t/o) the connection. <n> can not be less than 1800 seconds.

       Session::auth timeout = <n>
              When  the server is in unauthenticated mode, and does not detect
              any client activity, it will wait  <n>  seconds  before  closing
              (t/o) the connection. <n> can not be less than 30 seconds.

       Session::transfer timeout = <n>
              The  server  writes  data to the client in bulks. Each bulk gets
              <n> seconds to complete before the server times out.

       Session::transfer buffer size = <n>
              The server will buffer up to <n> bytes of data before sending it
              off  to  the  client.  A lower value will give smoother response
              from the server, but is a bad idea for clients with  a  big  RTT
              (for  example  dial-ins).  A high value gives better throughput,
              but a more bulky transfer.

       SSL::pem file = <file>
              The path to the SSL certificate file, in PEM format.

       SSL::ca file = <file>
              A file with one or more certificate authority  certificates.  It
              is used to help the client verify the SSL certificate.

       SSL::ca path = <path>
              A  path with lists of certificate authorities’ cerficates. It is
              used to help the client verify the SSL certificate.

       SSL::cipher list = <cipherlist>
              Sets the list of available SSL ciphers.

       SSL::verify peer = [yes|no]
              If yes, server will attempt to verify peer certificate.


       This file format is named Binc::Storage, after its C++ class name.

       The file starts with an optional list of aliases. These  aliases  start
       with  a  question  mark  ’?’,  followed  by the alias, a colon ’:’, the
       replacement text, and finally a semicolon ’;’. This example defines the
       alias "m" to represent the text "myfirstsection":


       A  section starts with an identifier, or a name. The name contains only
       alphanumeric characters, and it’s case sensitive. The section itself is
       enclosed in braces.

              MyFirstSection {


       Inside  a  section,  we have a comma separated list of key=value pairs.
       The key consists of a sequence of one or more alphanumeric  words.  The
       value can also contain quoted strings.

              MyFirstSection {
                certificate path = "/etc/path/certificate.txt",
                optional argument = "yes"

       The aliases that we could define at the start of the bincimap.conf file
       are useful if we wish to abbreviate long words  in  a  key  or  section
       name, to save space. Normally this is only used in generated files, but
       they can also make a manually edited conf file more compact:

              m {
                certificate path = "/etc/path/certificate.txt",
                optional argument = "yes"


       Copyright (C) 2002-2005 Andreas Aardal Hanssen

       This is free software; see the source for copying conditions. There  is
       NO warranty.


       Please  report  any  bugs to the Binc IMAP mailing list. Before posting
       your bug, check out the Binc IMAP official home  page  for  a  list  of
       mailing list archives to browse.

              Mailing list: <>
              Developers’ mailing list: <>
              Announcements list: <>

              Subscribing to a mailing list: <>
              Home page:


       Andreas Aardal Hanssen <>


       multilog(8)  supervise(8)  tcpserver(1)  bincimapd(1)  bincimap.conf(5)
       xinetd(8) xinetd.conf(5)

       Note: The first  three  man  pages  are  available  for  download  from