pknu.ac.kr.		30 IN SOA ns.pknu.ac.kr. please_set_email.absolutely.nowhere. (
				2015034065 ; serial
				3600       ; refresh (1 hour)
				3600       ; retry (1 hour)
				2419200    ; expire (4 weeks)
				900        ; minimum (15 minutes)
				)

pknu.ac.kr.		30 IN TXT "v=spf1 mx ip4:203.250.126.20 ip4:203.250.124.250
ip4:203.250.126.21 ip4:203.250.126.211 ip4:203.250.124.251 ip4:203.250.124.252
include:mailplug.com ~all"

pknu.ac.kr.		30 IN A	203.250.126.211

Mail exchangers:
pknu.ac.kr.		30 IN MX 0 zmx903.mailplug.com.

Name servers:
pknu.ac.kr.		30 IN NS ns.pknu.ac.kr.