센토스책 395p질문 드려여 .....

/etc/rc.d/init.d/named start 계쏙 실패 하내요

named 설정 오류:
zone localdomain/IN: loaded serial 42
zone localhost/IN: loaded serial 42
zone 0.0.127.in-addr.arpa/IN: loaded serial 1997022700
zone 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN: loaded serial 1997022700
zone 255.in-addr.arpa/IN: loaded serial 42
zone 0.in-addr.arpa/IN: loaded serial 42
zone my.internal.zone/IN: loading master file my.internal.zone.db: file not found
internal/my.internal.zone/IN: file not found
zone my.ddns.internal.zone/IN: loading master file slaves/my.ddns.internal.zone.db: file not found
internal/my.ddns.internal.zone/IN: file not found
zone my.external.zone/IN: loading master file my.external.zone.db: file not found
external/my.external.zone/IN: file not found
                                                           [실패]
뭔말인 지 모르겟어여ㅠ..ㅜ..