Yes, drdrb.com can receive emails.
No, drdrb.com is a throwaway domain and should be blocked.
You can use MailCheck's free API to automatically block throwaway emails. Read our documentation to get started. No registration required.
A record
66.111.4.53
MX records
in1-smtp.messagingengine.com
66.111.4.74
in2-smtp.messagingengine.com
64.147.123.52