I want to redirect from:
domain1.com/photos
To:
domain2.com/photos
I want the URL in the address bar to still read:
domain1.com/photos
Is there a way to do this using only .htaccess?
My .htaccess file for domain1.com is currently completely blank.
No, there isn't a way to do this with .htaccess. Doing so would present a glaring security hole - imagine someone doing this with a bank's website!