preventing users from logging into wrong domains

So far, I have yet to find a way of preventing users from logging into the server using any domain name which exists on the server.
Is there a way to enforce users to log in using the domain name they were assigned?

Example:

Domains include
domain1.com
domain2.com
domain3.com

Users include
user@domain1.com
user@domain2.com
user@domain3.com

Right now, user@domain1.com can log in from url host.domain3.com for example. I want to force user@domain1.com to only be able to log into their account at user@domain1.com.