$ORIGIN . $TTL 1 ; The KX is the same as the MX, so there are the differences and basics only. ; OK @ KX 1 mail ; Relative dname @ KX \# 3 0001 00 ; Hexadecimal rdata @ TYPE36 \# 3 0001 00 ; TYPE + Hexadecimal rdata @ TYPE36 1 @ ; TYPE @ kx 1 @ ; Type in lower-case ; KO @ KX