Removing h264enc ...
Removing xvidenc ...
Removing ogmrip-video-copy ...
Removing ogmrip-profiles ...
Removing ogmrip-mpeg ...
Removing ogmrip-doc ...
Removing ogmrip-ac3 ...
Removing ogmrip ...
Removing mencoder ...
Processing triggers for man-db ...
Processing triggers for doc-base ...
Processing 1 removed doc-base file...
Registering documents with scrollkeeper...
Processing triggers for gconf2 ...
Processing triggers for gnome-menus ...
Processing triggers for desktop-file-utils ...
Setting up postfix (2.9.1-4) ...

Postfix configuration was not changed.  If you need to make changes, edit
/etc/postfix/main.cf (and others) as needed.  To view Postfix configuration
values, see postconf(1).

After modifying main.cf, be sure to run '/etc/init.d/postfix reload'.

Running newaliases
newaliases: warning: valid_hostname: invalid character 40(decimal): ruben-laptop.(null)
newaliases: fatal: file /etc/postfix/main.cf: parameter myhostname: bad parameter value: ruben-laptop.(null)
dpkg: error processing postfix (--configure):
 subprocess installed post-installation script returned error exit status 75