master zone "in-addr.arpa" (IN) rejected due to errors

[zoe.goodchild at bexley.gov.uk]

Good afternoon,

I hope you can help me with the following errors that I am seeing on a
machine where I work. The machine is a SunOS 5.7 machine. I would be
grateful if you could tell me if the following error are serious, how
to fix them and if you think that they could cause users to be
disconnected from the server.

"db.root:409: Database error (A)
Sep  2 10:22:31 jupiter named[218]: owner name "BoS_" IN (primary) is
invalid - rejecting
Sep  2 10:22:31 jupiter named[218]: db.root:421: owner name error
Sep  2 10:22:31 jupiter named[218]: db.root:421: Database error (A)
Sep  2 10:22:31 jupiter named[218]: master zone "" (IN) rejected due to
errors (serial 1)
Sep  2 10:22:31 jupiter named[218]: host name "BoS_" (owner
"120.50.22.172.in-addr.arpa") IN (primary) is invalid - rejecting
Sep  2 10:22:31 jupiter named[218]: db.rev:207: Database error (bad
name "BoS_")
Sep  2 10:22:31 jupiter named[218]: host name "BoS_" (owner
"209.51.22.172.in-addr.arpa") IN (primary) is invalid - rejecting
Sep  2 10:22:31 jupiter named[218]: db.rev:421: Database error (bad
name "BoS_")
Sep  2 10:22:31 jupiter named[218]: master zone "0.0.127.in-addr.arpa"
(IN) rejected due to errors (serial 1)
Sep  2 10:22:31 jupiter named[218]: host name "BoS_" (owner
"209.51.22.172.in-addr.arpa") IN (primary) is invalid - rejecting
Sep  2 10:22:31 jupiter named[218]: db.rev:421: Database error (bad
name "BoS_")
Sep  2 10:22:31 jupiter named[218]: master zone "in-addr.arpa" (IN)
rejected due to errors (serial 1)
Sep  2 10:22:31 jupiter named[218]: Ready to answer queries."

Many, many thanks for your help.

regards

Zoe