Wildcard Subdomains

Example

# Define specified subdomains first
<VirtualHost *:80>
	ServerName subdomain.domain.com
	DocumentRoot "/path/to/domain.com/subdomains/subdomain"
</VirtualHost>

# Define domain and wildcard subdomains second
<VirtualHost *:80>
	ServerName domain.com
	DocumentRoot "/path/to/domain.com/httpdocs"
	ServerAlias domain.com www.domain.com *.domain.com
</VirtualHost>


# Rewrite Rule for wildcard subdomains
	RewriteCond %{HTTP_HOST} !www.domain.com$ [NC]
	RewriteCond %{HTTP_HOST} ^(www.)?([a-z0-9-]+).domain.com [NC]
	RewriteRule (.*) %2/$1 [L]

Symphony .htaccess example with subdomains

### Symphony 2.3.x ###
Options +FollowSymlinks -Indexes

<IfModule mod_rewrite.c>

	RewriteEngine on
	RewriteBase /

	### SECURITY - Protect crucial files
	RewriteRule ^manifest/(.*)$ - [F]
	RewriteRule ^workspace/utilities/(.*).xsl$ - [F]
	RewriteRule ^workspace/pages/(.*).xsl$ - [F]
	RewriteRule ^(.*).sql$ - [F]
	RewriteRule (^|/)\. - [F]

	### DO NOT APPLY RULES WHEN REQUESTING "favicon.ico"
	RewriteCond %{REQUEST_FILENAME} favicon.ico [NC]
	RewriteRule .* - [S=14]

	### IMAGE RULES
	RewriteRule ^image\/(.+\.(jpg|gif|jpeg|png|bmp))$ extensions/jit_image_manipulation/lib/image.php?param=$1 [L,NC]

	### CHECK FOR TRAILING SLASH - Will ignore files
	RewriteCond %{REQUEST_FILENAME} !-f
	RewriteCond %{REQUEST_URI} !/$
	RewriteCond %{REQUEST_URI} !(.*)/$
	RewriteRule ^(.*)$ $1/ [L,R=301]

	### URL Correction
	RewriteRule ^(symphony/)?index.php(/.*/?) $1$2 [NC]

	### ADMIN REWRITE
	RewriteRule ^symphony\/?$ index.php?mode=administration&%{QUERY_STRING} [NC,L]

	RewriteCond %{REQUEST_FILENAME} !-d
	RewriteCond %{REQUEST_FILENAME} !-f
	RewriteRule ^symphony(\/(.*\/?))?$ index.php?symphony-page=$1&mode=administration&%{QUERY_STRING}	[NC,L]

	### FRONTEND SUBDOMAIN REWRITE - Will ignore files and folders
	RewriteCond %{REQUEST_FILENAME} !-d
	RewriteCond %{REQUEST_FILENAME} !-f
	RewriteCond %{HTTP_HOST} ^([^.]+)\.([^.]+)\. [NC]
	RewriteRule ^(.*\/?)$ index.php?symphony-page=subdomains/%1/$1&%{QUERY_STRING} [L]

	### FRONTEND REWRITE - Will ignore files and folders
	RewriteCond %{REQUEST_FILENAME} !-d
	RewriteCond %{REQUEST_FILENAME} !-f
	RewriteRule ^(.*\/?)$ index.php?symphony-page=$1&%{QUERY_STRING}	[L]

</IfModule>
######

This does not work for me, did things changed with the new apache 2.2 ?