esn.ch.			30 IN SOA ns2.kos.ch. hostmaster.kos.ch. (
				2024021578 ; serial
				7200       ; refresh (2 hours)
				540        ; retry (9 minutes)
				1209600    ; expire (2 weeks)
				86400      ; minimum (1 day)
				)

esn.ch.			30 IN TXT "v=spf1 mx a:smtp.kos.ch -all"

esn.ch.			30 IN A	142.132.252.79

Mail exchangers:
esn.ch.			30 IN MX 10 mx.kos.ch.

Name servers:
esn.ch.			30 IN NS ns4.kos.ch.
esn.ch.			30 IN NS ns2.kos.ch.