Yes, gally.jp can receive emails.
No, gally.jp 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
126.119.164.110
MX records
alt1.aspmx.l.google.com
64.233.186.26
alt2.aspmx.l.google.com
74.125.193.26
aspmx.l.google.com
173.194.204.26
aspmx2.googlemail.com
64.233.186.27
aspmx3.googlemail.com
74.125.193.26