$TTL 86400 ; 1 day @ IN SOA ns1.dmz.nausch.org. hostmaster.nausch.org. ( 2017122901 ; serial 28800 ; refresh (8 hours) 7200 ; retry (2 hours) 604800 ; expire (1 week) 86400 ; minimum (1 day) ) NS ns1.dmz.nausch.org. MX 10 mx1.nausch.org. 17 PTR vml000017.dmz.nausch.org. 27 PTR vml000027.dmz.nausch.org.