shell:$ nslookup -timeout=2 -retry=1 'tsel.mailtarget.id'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
tsel.mailtarget.id	canonical name = proxy-client.mtarget.co.
Name:	proxy-client.mtarget.co
Address: 108.137.57.140