====== SquirrelMail unter Debian 6.0 ======

===== Installation =====

  * Paket einspielen:

  # apt-get install squirrelmail squirrelmail-decode ingerman wngerman

===== SquirrelMail-Konfiguration =====

  * SquirrelMail-Konfigurationsprogramm aufrufen:

  # /usr/sbin/squirrelmail-configure
  2 (Server Settings)
  A (IMAP Settings)
  8 (Server software)
  dovecot
  R (Return to Main Menu)
  3 (Folder Defaults)
  3 (Trash Folder)
  Trash
  4 (Sent Folder)
  Sent
  5 (Drafts Folder)
  Drafts
  R (Return to Main Menu)
  10 (Languages)
  1 (Default Language)
  de_DE
  S (Save data)
  Q (Quit)

===== Apache-Konfiguration =====

  * Basis-Pfad für URL auf ''webmail'' anstatt ''squirrelmail'' festlegen:

  # vi /etc/squirrelmail/apache.conf
  Alias /webmail /usr/share/squirrelmail

  * Zugriff von außen erlauben:

  # vi /etc/squirrelmail/apache.conf
  [...]
  <Directory /usr/share/squirrelmail>
    Order allow,deny
    Allow from all

  * Zugriff per HTTPS erzwingen:

  # vi /etc/squirrelmail/apache.conf
  [...]
  # redirect to https when available (thanks omen@descolada.dartmouth.edu)
  #
  #  Note: There are multiple ways to do this, and which one is suitable for
  #  your site's configuration depends. Consult the apache documentation if
  #  you're unsure, as this example might not work everywhere.
  #
  <IfModule mod_rewrite.c>
    <IfModule mod_ssl.c>
      <Location /webmail>
        RewriteEngine on
        RewriteCond %{HTTPS} !^on$ [NC]
        RewriteRule . https://%{HTTP_HOST}%{REQUEST_URI}  [L]
      </Location>
    </IfModule>
  </IfModule>

  * Website konfigurieren (sicherstellen, dass SSL-Zugriff auf ''webmail.disorganized.de'' auf ''disorganized.de/webmail'' umgeleitet wird):

  # vi /etc/apache2/sites-available/disorganized
  <VirtualHost *:443>
  [...]
      <IfModule mod_rewrite.c>
  [...]
          # https://webmail.disorganized.de/... -> https://disorganized.de/webmail/...
          RewriteCond %{HTTP_HOST} ^webmail.disorganized.de$ [NC]
          RewriteRule . https://disorganized.de/webmail%{REQUEST_URI}  [R=301,L]
      </IfModule>
  </VirtualHost>
  
  <VirtualHost *:80>
      ServerName webmail.disorganized.de
      Redirect permanent / https://disorganized.de/webmail/
  </VirtualHost>

  * Apache-Konfigurationsschnippsel einbinden:

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

  * Apache neu starten, SSL-Redirect testen usw.