share a domain name beween php and mono

[Hafner]

I've got a problem : I've got a dedicated server where I use three different domain names and php. Now, I've got a new website that I developped with asp.net. I installed mono, mod_mono and transfered my assembly inside \[code\]/var/www/mysite\[/code\]My problem comes up when I try to access my website. I tried IpAdress/mysite/ but it just gives the three and if I want "IpAddress/mysite/Controller1/Action1" it says 404.As I said my server is apache and is used with php websites which has several domain names. As one of those domain name can be used for my own website, I tried to create a subdomain name let's say \[code\]mysite.maindomain.com\[/code\]Here is the content of the file \[code\]/etc/apache/sites-enabled/mysite.maindomain.com\[/code\]\[code\] <VirtualHost *:80> ServerName mysite.maindomain.com ServerAdmin web-admin@mysite DocumentRoot /var/www/mysite MonoServerPath sousdomaine.domaineprincipal.com "/usr/bin/mod-mono-server2" MonoSetEnv mysite.maindomain.com MONO_IOMAP=all MonoApplications mysite.maindomain.com "/:/var/www/mysite" <Location "/"> Allow from all Order allow,deny MonoSetServerAlias mysite.maindomain.com SetHandler mono SetOutputFilter DEFLATE SetEnvIfNoCase Request_URI "\.(?:gif|jpe?g|png)$" no-gzip dont-vary </Location> <IfModule mod_deflate.c> AddOutputFilterByType DEFLATE text/html text/plain text/xml text/javascript </IfModule> </VirtualHost>\[/code\]When I call mysite.maindomain.com it says "137 ERR_NAME_RESOLUTION_FAILED"What configuration must I give to make mysite.maindomain.com or IpAdress/mysite/ work?