j-techchina.com.	30 IN SOA ns1.abchk.net. root.ns1.abchk.net. (
				2021051201 ; serial
				1200       ; refresh (20 minutes)
				1800       ; retry (30 minutes)
				86400      ; expire (1 day)
				3600       ; minimum (1 hour)
				)

j-techchina.com.	30 IN TXT "v=spf1 include:_spf.abchk.net ~all"

Mail exchangers:
j-techchina.com.	30 IN MX 130 mx13.abchk.net.
j-techchina.com.	30 IN MX 10 mx1.abchk.net.

Name servers:
j-techchina.com.	30 IN NS ns1.abchk.net.
j-techchina.com.	30 IN NS ns2.abchk.net.