Some information About Mod-Rewrite...

[never123456]

I have 2 domains 1 of them is the main hosting account other is its alias.

for example:
in hosting account your main domain is blabla.com
and alias is myblabla.com

when option in settings as site url is myblabla.com mod re-write doesnt work
cause in my hosting main account is blabla.com.

so site url should be the same as main hosting domain. otherwise it doesnt work .you can reach site but re-write urls dont work.

[Bruceper]

mod-rewrite should work no matter what domain you use, even if it is an alias.

During setup and in mod_rewrite you need to use the same domain, and may need to use rewritebase [domain] or rewritebase / in .htaccess