Email through name-surname.dreamhost.com

When send an email by my wordpress site, who recive the email watch my addres email + through william-paterson.dreamhost.com
who is william paterson ? Can I edit example mydomainame.dreamhost.com ?
thanks

william-paterson is a name of a server at DreamHost. I believe it’s named after William Paterson, the second governor of New Jersey.

You cannot create your own subdomains of dreamhost.com.

Ok, thanks