Permission denied virtualhost alias

[Bocalinda <bocalinda@xxxxxxxxx>]

Hi,

I got the following parameters in my VirtualHost configuration:

<VirtualHost *:80>

    ServerName www.someserver.com

    ServerAlias www.otherserver.com

    ServerAlias otherserver.com

    DocumentRoot /var/www/public_html

    ErrorLog /var/log/apache2/error_log

    CustomLog /var/log/apache2/access_log combined

    DirectoryIndex index.html index.htm index.php index.php4 index.php5

    <Directory /var/www/public_html>

        Options -Indexes +IncludesNOEXEC +FollowSymLinks

        allow from all 

        AllowOverride All

    </Directory>

</VirtualHost>

I can access without any problems to www.someserver.com and www.otherserver.com, but otherserver.com (w/out www) returns HTTP error 304: Permission Denied.

I'm clueless about what the reason could be.

Note that all hostnames are pointing to the same IP address.

Any help would be kindly appreciated.