Mails do not open

[conscientia]

Hey i installed roundcube and an simple loving it! But it seems rouncube has problems parsing some mails, like i registered on twitter and the mail simply won't open! any ideas, why?

[SKaero]

Is there anything in your error log?

[conscientia]

Is there anything in your error log?

yes. this is what it has

Code Select Expand

[08-Dec-2009 20:00:52] PHP Warning:  include(DOMDocument.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /var/www/html/mail/program/include/iniset.php on line 99
[08-Dec-2009 20:00:52] PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening 'DOMDocument.php' for inclusion (include_path='/var/www/html/mail/:/var/www/html/mail/program:/var/www/html/mail/program/lib:/var/www/html/mail/program/include:.:/usr/share/pear:/usr/share/php') in /var/www/html/mail/program/include/iniset.php on line 99
[08-Dec-2009 20:00:52] PHP Fatal error:  Class 'DOMDocument' not found in /var/www/html/mail/program/lib/washtml.php on line 247

[SKaero]

What version of php are you running?

[conscientia]

5.2.11

i searched a bi on other sites n they say something about libxml... what about that?

[SKaero]

Do you have the php-xml module installed?