$ORIGIN	.
$TTL	1

; The RT is the same as the MX, so there are the differences and basics only.

; OK
@	RT	1	mail		; Relative dname
@	RT	\# 3 0001 00		; Hexadecimal rdata
@	TYPE21	\# 3 0001 00		; TYPE + Hexadecimal rdata
@	TYPE21	1	@		; TYPE
@	rt	1	@		; Type in lower-case

; KO
@	RT