First off, I’ve cleaned up your config:

<VirtualHost *:80>
    ServerAdmin webmaster@localhost
    DocumentRoot /var/www/skyo/publichtml
    ServerName www.skyo.be
    Serveralias sky.be
    ErrorLog /var/www/skyo/logs/be-error.log
    Loglevel warn
    CustomLog /var/www/skyo/logs/access.log combined
    <Directory /var/www/skyo/publichtml>
        AllowOverride All
        Order allow,deny
        allow from all
    </Directory>
</VirtualHost>

You don’t set an alias that points to the ServerName. Also, only have one ServerAlias. They can be set like this:

ServerName example.com
ServerAlias www.example.com my.example.com

Next, run this, and give me the output:

apache2ctl -S

@JonsJava

tnx!

I made a mistake in the alias of skyo, that was why it pointed toward that site, I guess. Still no luck with the new site franklefebure.be. It shows on the ip of the server but not on the domainname. Maybe it is a problem with the A records.

<VirtualHost *:80>
ServerAdmin webmaster@localhost

DocumentRoot /var/www/franklefebure/public_html
ServerName www.franklefebure.be
Serveralias franklefebure.be

ErrorLog /var/www/franklefebure/logs/error.log
Loglevel warn
CustomLog /var/www/franklefebure/logs/access.log combined

<Directory /var/www/franklefebure/public_html>
AllowOverride All
Order allow,deny
allow from all
</Directory>

</VirtualHost>

Output:

[Wed Mar 25 08:50:04 2015] [warn] The Alias directive in /etc/apache2/conf.d/phpmyadmin.conf at line 3 will probably never match because it overlaps an earlier Alias.
Loaded Modules:
coremodule (static)
logconfigmodule (static)
logiomodule (static)
mpmpreforkmodule (static)
httpmodule (static)
somodule (static)
aliasmodule (shared)
authbasicmodule (shared)
authnfilemodule (shared)
authzdefaultmodule (shared)
authzgroupfilemodule (shared)
authzhostmodule (shared)
authzusermodule (shared)
autoindexmodule (shared)
cgimodule (shared)
deflatemodule (shared)
dirmodule (shared)
envmodule (shared)
mimemodule (shared)
negotiationmodule (shared)
php5module (shared)
reqtimeoutmodule (shared)
rewritemodule (shared)
setenvifmodule (shared)
status_module (shared)
Syntax OK

I apologize. I meant for you to give me the output for “apache2ctl -S”

wildcard NameVirtualHosts and default servers:
*:80 is a NameVirtualHost
default server www.franklefebure.be (/etc/apache2/sites-enabled/franklefebure:1)
port 80 namevhost www.franklefebure.be (/etc/apache2/sites-enabled/franklefebure:1)
port 80 namevhost www.skyo.be (/etc/apache2/sites-enabled/skyo:1)
port 80 namevhost www.tcpajottenland.be (/etc/apache2/sites-enabled/skyo:17)
port 80 namevhost www.generationalbator.be (/etc/apache2/sites-enabled/skyo:37)
port 80 namevhost www.gorgonmotors.be (/etc/apache2/sites-enabled/skyo:56)
port 80 namevhost www.lapsuslanguages.be (/etc/apache2/sites-enabled/skyo:75)
port 80 namevhost www.dance-inn.be (/etc/apache2/sites-enabled/skyo:94)
port 80 namevhost www.demo.schoolbox.be (/etc/apache2/sites-enabled/skyo:113)
port 80 namevhost www.demo2.schoolbox.be (/etc/apache2/sites-enabled/skyo:132)
port 80 namevhost www.fr.melkopschool.be (/etc/apache2/sites-enabled/skyo:151)
port 80 namevhost www.voka.theantennapub.be (/etc/apache2/sites-enabled/skyo:170)
port 80 namevhost www.sketchingtheworld.org (/etc/apache2/sites-enabled/skyo:189)
port 80 namevhost www.pantalone.be (/etc/apache2/sites-enabled/skyo:209)
port 80 namevhost www.vendiscapital.com (/etc/apache2/sites-enabled/vendiscapital:1)

as you see I created a different file for franklefebure, which I intend to do for all the sites now.