Server was setup according to the perfect debian lenny with ISPCFG3 setup. I had an alias set up in /etc/apache2/apache2.conf so that any domain can add /webmail/ to its end and use squirrelmail. This is no longer working the error log says: [Tue Mar 01 00:31:29 2011] [error] [client 18.104.22.168] Premature end of script headers: index.php [Tue Mar 01 00:31:29 2011] [error] [client 22.214.171.124] SoftException in Application.cpp:221: File "/usr/share/squirrelmail//index.php" is not in document root of Vhost "/var/www/zice.ro/web" not sure where this check comes from now... I'd like to remove it again. running : dpkg-reconfigure sysv-rc tells me: Unable to migrate to dependency-based boot system â â â â Tests have determined that problems in the boot system exist which prevent migration to dependency-based boot sequencing: â â â â insserv: warning: script 'K01mydns' missing LSB tags and overrides, insserv: warning: script 'mydns' missing LSB tags and overrides, any hints?