=====Webmail-client=====
If you have a webserver running on your network, you could deploy a webmail solution very easily. We suggest squirrelmail (see http://www.squirrelmail.org) and maybe in the future Roundcube (http://roundcube.net)

For instance the Dutch ISP XS4ALL (www.xs4all.nl) uses Squirrelmail as a webmail solution. They also do a huge amount of development for the Squirrelmail project.

====Pre-installation====
Install an Apache webserver with support for PHPv4 or PHPv5. Both version 1.x and 2.x of Apache will do. Documentation on how to install Apache is [[hannibal:apache|available here]].


====Installation====
Debian Etch provides packages for Squirrelmail v1.4.9a

  apt-get install squirrelmail squirrelmail-decode squirrelmail-locales


====Configuration====
You can configure Squirrelmail using the command:

  /usr/sbin/squirrelmail-configure

As an alternative you can just edit /etc/squirrelmail/config.php.

You might want to add the Avelsieve-plugin to your configuration. Avelsieve supplies a web based interface that enables squirrelmail users to create server side mail filtering rules (e.g. out of office messages). You can obtain more information and download Avelsieve at http://email.uoa.gr/projects/squirrelmail/avelsieve_download.php

NOTE: Avelsieve version 1.0.1 (stable) has been reported to NOT work flawlessly within the Hannibal systemstack. We advice to choose Avelsieve version 1.9.7

This is the relevant part of /etc/squirrelmail/config.php:
<code>
/**
 * SquirrelMail Configuration File
 * Created using the configure script, conf.pl
 */

global $version;
$config_version = '1.4.0';
$config_use_color = 2;

$org_name      = "SquirrelMail";
$org_logo      = SM_PATH . 'images/sm_logo.png';
$org_logo_width  = '308';
$org_logo_height = '111';
$org_title     = "SquirrelMail $version";
$signout_page  = '';
$frame_top     = '_top';

$provider_uri     = 'http://www.squirrelmail.org/';

$provider_name     = 'SquirrelMail';

$motd = "";

$squirrelmail_default_language = 'nl_NL';
$default_charset       = 'iso-8859-1';
$lossy_encoding        = false;

$domain                 = 'webmail.intra.example.com';
$imapServerAddress      = '192.168.1.15';
$imapPort               = 143;
$useSendmail            = false;
$smtpServerAddress      = '192.168.1.14';
$smtpPort               = 25;
$sendmail_path          = '/usr/sbin/sendmail';
$sendmail_args          = '-i -t';
$pop_before_smtp        = false;
$imap_server_type       = 'cyrus';
$invert_time            = false;
$optional_delimiter     = 'detect';
$encode_header_key      = '';

$default_folder_prefix          = '';
$trash_folder                   = 'INBOX.Trash';
$sent_folder                    = 'INBOX.Sent';
$draft_folder                   = 'INBOX.Drafts';
$default_move_to_trash          = true;
$default_move_to_sent           = true;
$default_save_as_draft          = true;
$show_prefix_option             = false;
$list_special_folders_first     = true;
$use_special_folder_color       = true;
$auto_expunge                   = true;
$default_sub_of_inbox           = true;
$show_contain_subfolders_option = false;
$default_unseen_notify          = 2;
$default_unseen_type            = 1;
$auto_create_special            = true;
$delete_folder                  = false;
$noselect_fix_enable            = false;

$data_dir                 = '/var/lib/squirrelmail/data/';
$attachment_dir           = '/var/spool/squirrelmail/attach/';
$dir_hash_level           = 0;
$default_left_size        = '150';
$force_username_lowercase = false;
$default_use_priority     = true;
$hide_sm_attributions     = false;
$default_use_mdn          = true;
$edit_identity            = true;
$edit_name                = true;
$hide_auth_header         = false;
$allow_thread_sort        = false;
$allow_server_sort        = false;
$allow_charset_search     = true;
$uid_support              = true;

$plugins[0] = 'calendar';
$plugins[1] = 'delete_move_next';
$plugins[2] = 'squirrelspell';
$plugins[3] = 'translate';
$plugins[4] = 'avelsieve';
...
</code>

You can modify the URL that the logon-screen will be available at by changing /etc/squirrelmail/apache.conf The default location is a subdirectory of your webserver (e.g. webmail.intra.example.com/squirrelmail). Check that Apache is configured for Squirrelmail, e.g. create a symlink like:

  cd /etc/apache2/conf.d
  ln -s /etc/squirrelmail/apache.conf squirrelmail.conf

For language settings to work properly you might want to add extra locales to your system. You can do this like so:

  dpkg-reconfigure locales

Also check this setting in /etc/squirrelmail/apache.conf
  php_flag register_globals on