postoffice.net.		30 IN SOA dnsext02.usa.net. dnsadmin.usa.net. (
				2023091102 ; serial
				600        ; refresh (10 minutes)
				300        ; retry (5 minutes)
				604800     ; expire (1 week)
				600        ; minimum (10 minutes)
				)

Mail exchangers:
postoffice.net.		30 IN MX 10 mxpool.postoffice.net.

Name servers:
postoffice.net.		30 IN NS ns1.perimeterusa.com.
postoffice.net.		30 IN NS dnsext01.usa.net.
postoffice.net.		30 IN NS ns2.perimeterusa.com.
postoffice.net.		30 IN NS dnsext02.usa.net.