Yes, 500graus.com.br can receive emails.
Yes, 500graus.com.br seems to be a legitimate domain.
A record
216.172.172.198
MX records
alt1.aspmx.l.google.com
64.233.186.27
alt2.aspmx.l.google.com
209.85.203.27
alt3.aspmx.l.google.com
172.253.120.26
alt4.aspmx.l.google.com
172.217.218.26
aspmx.l.google.com
173.194.208.27