rewriting/forwarding wildcard subdomains to same subdomain on diff dom

Hi there, after years of lurking and finding answers here, I finally have a problem that I could not find an answer to, so I hope you can help.

I have set up the multiuser version of Wordpress. It offers visitors to set up a blog with url: username.domain1.com
This is being set-up using a virtual host addition (wildcards). An non existing address is being captured by the altered .htaccess file, redirecting it to a signup page:


RewriteEngine On
RewriteBase BASE/#uploaded files
RewriteRule ^(.*/)?files/$ index.php [L]
RewriteRule ^(.*/)?files/(.*) wp-content/blogs.php?file=$2 [L]RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule . - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-.*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

Sor far so good, it works.

As my domain name is spelled differently in UK vs US english (****travellers, with 1 or 2 'l's) I have all related domains and alternative TLD's. Currently these are parked on top of domain.com using Cpanel. I am on a VPS and can change DNS, httpd.conf etc.

My questions is:
- how can I use a rewrite rule so that user1.domain1.com rewrites to user1.domain2.com or (or user1.domain1.net etc). So the wildcards subdomains (usernames) must resolve for every domain and rewrite to the same subdomain on domain2.com/domain1.net.

Subquestions:
- Do I need to set up a <virtualhost> for every domain in httpd.conf?
Or is it maybe possible to add serveraliases to one virtualhost?

- What should be added/changed to the above .htaccess?
- do I need to change anything to the DNS zones, or was parking enough?
- How/where can I best add a non-www rewrite, taking the above into consideration, while preventing any loops?

There are so many different combinations possible, so all help is welcome!

Thanks in advance!

[edited by: jdMorgan at 3:11 pm (utc) on Sep. 6, 2007]
[edit reason] Obscured domain name per TOS. [/edit]

Options +FollowSymLinks RewriteEngine on # # IF requested hostname does not end in "domain2.com" or "domain2.com:<port_number>" RewriteCond %{HTTP_HOST} !\.domain2\.com(:[0-9]+)?$ # AND [b]([/b] # IF requested hostname starts with <subdomain>.domain1.<anything> or www.<subdomain>.domain1.<anything> RewriteCond %{HTTP_HOST} ^(www\.)?([^.]+)\.domain1\. [OR] # OR IF requested hostname starts with <subdomain>.domain2.<anything> or www.<subdomain>.domain2.<anything> RewriteCond %{HTTP_HOST} ^(www\.)?([^.]+)\.domain2\. [OR] # OR IF requested hostname starts with <subdomain>.domain3.<anything> or www.<subdomain>.domain3.<anything> [b])[/b] RewriteCond %{HTTP_HOST} ^(www\.)?([^.]+)\.domain3\. # THEN redirect the request to <subdomain>.domain2.com/<requested_page> RewriteRule ^/(.*) http://%2.domain2.com/$1 [R=301,L]

<VirtualHost 12.345.67.89> ServerName domain2.com ServerAlias domain2.com *.domain2.com ServerAlias domain2.org *.domain2.org ServerAlias domain1.com *.domain2.comOptions +FollowSymLinks RewriteEngine on # IF requested hostname does not end in "domain2.com" or "domain2.com:<port_number>" RewriteCond %{HTTP_HOST}!\.domain2\.com(:[0-9]+)?$ # AND ( # IF requested hostname starts with <subdomain>.domain1.<anything> or www.<subdomain>.domain1.<anything> RewriteCond %{HTTP_HOST} ^(www\.)?([^.]+)\.domain1\. # OR IF requested hostname starts with <subdomain>.domain2.<anything> or www.<subdomain>.domain2.<anything> RewriteCond %{HTTP_HOST} ^(www\.)?([^.]+)\.domain2\. [OR] # THEN redirect the request to <subdomain>.domain2.com/<requested_page> RewriteRule ^/(.*) http://%2.domain2.com/$1 [R=301,L]

</VirtualHost>

Options +FollowSymLinks RewriteEngine on # IF requested hostname is not exactly "www.domain2.com" RewriteCond %{HTTP_HOST} !^www\.domain2\.com$ # AND IF requested hostname does not end in "domain2.com" or "domain2.com:<port_number>" RewriteCond %{HTTP_HOST} !\.domain2\.com(:[0-9]+)?$ # AND ( # IF requested hostname starts with <subdomain>.domain1.<anything> or www.<subdomain>.domain1.<anything> RewriteCond %{HTTP_HOST} ^(www\.)?([^.]+)\.domain1\. [OR] # OR IF requested hostname starts with <subdomain>.domain2.<anything> or www.<subdomain>.domain2.<anything> ) RewriteCond %{HTTP_HOST} ^(www\.)?([^.]+)\.domain2\. # THEN redirect the request to <subdomain>.domain2.com/<requested_page> RewriteRule ^/(.*)$ http://%2.domain2.com/$1 [R=301,L]

# Externally redirect non-www domain requests to www.domain2.com RewriteCond %{HTTP_HOST} ^domain1\. [OR] RewriteCond %{HTTP_HOST} ^domain2\. RewriteRule ^/(.*)$ http://www.domain2.com/$1 # redirect back to non-www RewriteCond ^/(.*)$ http://www.domain2.com/$1 RewriteRule ^/(.*)$ http://domain2.com/$1 [R=301,L]

<VirtualHost 123.45.67.89> ServerName domain2.com ServerAlias *.domain2.com domain2.org *.domain2.org domain1.com *.domain1.com # Options +FollowSymLinks RewriteEngine on # # IF requested subdomain is not "www" RewriteCond %{HTTP_HOST} !^www\. # AND # ( IF requested domain is domain2.org RewriteCond %{HTTP_HOST} ^([^.]+)\.domain2\.org [OR] # OR IF requested domain is domain1.com ) RewriteCond %{HTTP_HOST} ^([^.]+)\.domain1\.com # THEN redirect the request to <subdomain>.domain2.com/<requested_page> RewriteRule ^/(.*)$ http://%1.domain2.com/$1 [R=301,L] # # IF requested subdomain is www (followed by any domain name) RewriteCond %{HTTP_HOST} ^www\. [OR] # OR IF requested domain is domain2.org or domain2.org<port number> RewriteCond %{HTTP_HOST} ^domain2\.org(:[0-9]+)?$ [OR] # OR IF requested domain is domain1.com or domain1.com<port number> RewriteCond %{HTTP_HOST} ^domain1\.com(:[0-9]+)?$ # THEN externally redirect to domain2.com/<requested_page> RewriteRule ^/(.*)$ http://domain2.com/$1 [R=301,L]

rewriting/forwarding wildcard subdomains to same subdomain on diff dom

htaccess vs httpd.conf vs DNS?

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