Is there anything in your error log?
[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