Been trying to make redirect 301 from 1 domainname on my old webserver to a different dommainname on my new site. I'm also using subdomains, the subdomain names are the same.
fe: sub1.domain1.com to sub1.domain2.com

I tried countles redirect rules and combinations in the .htaccess on the old webserver but they don't seem to work. Mostly I'm getting: 500 ERROR: This is not the page you requested.
This is a non-erronous page (500EP) used to display erronous pages (500!EP).

Any suggestions?