The following is an example file which might be used to define the ISI.EDU zone and is loaded with an origin of ISI.EDU:
@ IN SOA VENERA Action\.domains (
20 ; SERIAL
7200 ; REFRESH
600 ; RETRY
3600000; EXPIRE
60) ; MINIMUM
NS A.ISI.EDU.
NS VENERA
NS VAXA
MX 10 VENERA
MX 20 VAXA
A A 26.3.0.103
VENERA A 10.1.0.52
A 128.9.0.32
VAXA A 10.2.0.27
A 128.9.0.33
$INCLUDE <SUBSYS>ISI-MAILBOXES.TXT
Where the file <SUBSYS>ISI-MAILBOXES.TXT is:
MOE MB A.ISI.EDU.
LARRY MB A.ISI.EDU.
CURLEY MB A.ISI.EDU.
STOOGES MG MOE
MG LARRY
MG CURLEY
Note the use of the \ character in the SOA RR to specify the responsible person mailbox "Action.domains@E.ISI.EDU".