geosem.es.		30 IN SOA castor.tsc.es. hostmaster.tsc.es. (
				2025111300 ; serial
				43200      ; refresh (12 hours)
				7200       ; retry (2 hours)
				1209600    ; expire (2 weeks)
				3600       ; minimum (1 hour)
				)

geosem.es.		30 IN TXT "v=spf1 mx ip4:212.227.40.75 ~all"

geosem.es.		30 IN A	212.227.40.75

Mail exchangers:
geosem.es.		30 IN MX 10 mail.geosem.es.

Name servers:
geosem.es.		30 IN NS castor.tsc.es.
geosem.es.		30 IN NS mon.tsc.es.