er101.com.		30 IN SOA ns1.er101.com. jkwok.ensil.com. (
				2018010404 ; serial
				3600       ; refresh (1 hour)
				7200       ; retry (2 hours)
				1209600    ; expire (2 weeks)
				86400      ; minimum (1 day)
				)

er101.com.		30 IN TXT "v=spf1 +a +mx +ip4:184.107.55.89 ~all"

er101.com.		30 IN A	184.107.55.89

Mail exchangers:
er101.com.		30 IN MX 0 er101.com.

Name servers:
er101.com.		30 IN NS ns2.er101.com.
er101.com.		30 IN NS ns1.er101.com.