apache - htaccess: Redirect ANY Request to a specific URL -

i can't seem set htaccess-file redirects kind of request www.mydomain.com. use following rule redirect:

rewriterule ^(.*)$ www.mydomain.com [r=301,l]

the problem enter endless redirection loop because correct url redirected well. tried preventing using

rewritecond %{env:redirect_status} ^$

and

rewritecond %{http_host} !^www.mydomain.com [nc]

as conditions, kind of variation of it, end flag. none of worked.

all need is

what doing wrong, , how can achieve this? thank you!

Ben