Can't enable sites in VPS

Can't enable sites in VPS

I had a incompatibility problem with mysql-server that caused my VPS to
fall over. I put it in technical support hands. Now, technical support
tells me that my document root is not configured correctly because only
points to /var/www. But I didn't change anything of my apache
configuration! I have a default file in /etc/apache2/sites-avaiable with
the next code:
<VirtualHost *:80>
ErrorDocument 404 /error404.html
ErrorDocument 403 /error403.html
ServerAdmin webmaster@localhost
DocumentRoot /var/www
<Directory />
Options +FollowSymLinks -Indexes
AllowOverride None
</Directory>
<Directory /var/www/>
Options -Indexes +FollowSymLinks +MultiViews
AllowOverride all
Order allow,deny
allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
And the two sites in the same path (itransformer.es and msalsas.com) have
the next code:
<VirtualHost *:80>
ServerName www.itransformer.es
ServerAlias itransformer.es *.itransformer.es
DocumentRoot /var/www/itransformer/web
</VirtualHost>
and
<VirtualHost *:80>
ServerName msalsas.com
ServerAlias www.msalsas.com
DocumentRoot /var/www/msalsas
<Directory /var/www/msalsas>
AllowOverride all
Options all
</Directory>
</VirtualHost>
Before I did:
a2ensite itransformer.es
and it worked for me. Now, it tells me:
ERROR: Site itransformer.es does not exist!
Any idea of what can be happening here?
I have tried to link to sites-enabled by:
ln -s /etc/apache2/sites-available/itransformer.es
/etc/apache2/sites-enabled/itransformer.es
But it's not the problem...