Question need help?

[Kylie99]

All of these 2 domain work for ONE site without redirect but the files and database inside (site1.com) only.

and when using site2.com the title for any pages it's same when using site1.com

Thanks

 

[Brujo]

it looks like something similar is discussed in the following thread:
Question - How to make 2 Domains for 1 Site (No redirect).