In my error log is lot of such logs:

[Tue Feb 05 21:07:54 2008] [error] [client xx.xxx.xxx.xxx] File does not exist: /path/mydomain.com/root/subdomain_which_doesn't exist

When a visitor types to address bar this: www.mydomain.com/subdomain_which_doesn't_exist he will get 404 error

Is there way how can I redirect all unknow addresses to main page via .htaccess?

www.mydomain.com/subdomain_which_doesn't exist --->>redirect to--->> www.mydomain.com

:)

 

www.mydomain.com/subdomain_which_doesn't exist --->>redirect to--->> www.mydomain.com

:)

You can add something like:

Redirect permanent /subdomain_which_doesn't/	http://wwww.mydomain.com

or

ErrorDocument 404 http://wwww.mydomain.com

this will redirect any "404 pages" (pages not found) to your main domain URL

HTH