Yes, 3.104.net can receive emails.
Yes, 3.104.net seems to be a legitimate domain.
A record
None
MX records
gate01.netbees.clubbbq.com
218.219.70.201
gate05.netbees.clubbbq.com
218.219.70.205
gate06.netbees.clubbbq.com
218.219.70.206
gatetest.netbees.clubbbq.com
218.219.70.208