Attempting to connect SSH to a machine using a domain

I am having trouble (only recently) logging into a machine at work. I have always entered my credentials like username@domain.local. But it doesn't seem to work anymore... I noticed that after typing the username, and before typing the password it says: **username@domain.local@machine.domain.local's password:** Is this normal that the remote machine is "tagged" on to the end of my username? Or is it the root of my login problem?