What's wrong with this zone file?

[Steve Snyder]

Following the directions in the 3rd edition of "DNS and BIND" I 
hand-created a zone database from the data in my /etc/hosts file.  When I 
started named, it consistently complained about the same 2 records.  

I inspected the file over and over and in several different editors, trying
to determine how these 2 records were different from all the others.  They
looked good to me.  Finally, I downloaded the utility h2n (used in the
book) and had it automatically create the files.  Named still issues the
same complaints!  The records complained about are the same, though now on
different lines in the file.

This is the complaint I get:

corona named[1011]: db.snydernet:25: IP Address error (192.168.0.08)
corona named[1011]: db.snydernet:27: IP Address error (192.168.0.09)
corona named[1011]: master zone "snydernet.lan" (IN) rejected due to errors (serial 1999061600)

And this is db.snydernet, the zone file containing the "bad" records:

@ IN  SOA corona.snydernet.lan. root.corona.snydernet.lan. ( 1999061600 10800 3600 604800 86400 )
  IN  NS  corona.snydernet.lan.

localhost            IN  A     127.0.0.1
ljet4m               IN  A     192.168.0.16
ljet4m               IN  MX    10 ljet4m.snydernet.lan.
venus                IN  A     192.168.0.03
venus                IN  MX    10 venus.snydernet.lan.
dj1120               IN  A     192.168.0.17
dj1120               IN  MX    10 dj1120.snydernet.lan.
corona               IN  A     192.168.0.12
corona               IN  MX    10 corona.snydernet.lan.
jupiter              IN  A     192.168.0.06
jupiter              IN  MX    10 jupiter.snydernet.lan.
mars                 IN  A     192.168.0.05
mars                 IN  MX    10 mars.snydernet.lan.
pluto                IN  A     192.168.0.10
pluto                IN  MX    10 pluto.snydernet.lan.
earth                IN  A     192.168.0.04
earth                IN  MX    10 earth.snydernet.lan.
mercury              IN  A     192.168.0.02
mercury              IN  MX    10 mercury.snydernet.lan.
saturn               IN  A     192.168.0.07
saturn               IN  MX    10 saturn.snydernet.lan.
uranus               IN  A     192.168.0.08
uranus               IN  MX    10 uranus.snydernet.lan.
neptune              IN  A     192.168.0.09
neptune              IN  MX    10 neptune.snydernet.lan.

Named always objects to the "uranus" and "neptune" IN records.  If I 
comment-out these 2 records, named will start up without error.

Can anyone tell me why these 2 specific records are considered 
unacceptable?  Thank you.


***** Steve Snyder *****