Hi,

I used b2evolution for two blogs in a multi-domain setup, the site is hosted at 1&1.

maindomain.de is the maindomain which is the default blog in b2evolution and also at 1&1

seconddomain.de is registered as secondary domain at 1&1 and has its own blog in b2evolution with absolute URL www.seconddomain.de

To make not only http://www.seconddomain.de working as URL but also http://domschnecken.de I added the following two lines in .htaccess:

RewriteCond %{HTTP_HOST} ^(seconddomain\.de)
RewriteRule (.*) http://www.%1/$1 [R=301,L]

Now I wanted to add a "sub-blog" in this blog and have it accessible via a subdomain.
I defined sub.seconddomain.de at 1&1 as subdomain pointing to the same index as the two links above, deleted the two lines in .htaccess and defined a blog in b2evolution with absolute URL sub.seconddomain.de

Status now for opening an URL in a browser is:
maindomain.de and www.maindomain.de are working correctly
www.seconddomain.de is working correctly
seconddomain.de and sub.seconddomain.de are now redirected the maindoman.de blog as it is the default

Any other hostname xxx.seconddoamin.de results in a server not found error.

Any clues, where I misconfigured my setup, thanks, krimskrams