>>69さんの所で調べたところ、幾つかエラーになりました。 WARN Glue at parent nameservers WARNING. The parent servers (d.gtld-servers.net.) are not providing glue for all your nameservers. This means that they are supplying the NS records (host.example.com), but not supplying the A records (192.0.2.53), which can cause slightly slower connections, and may cause some incompatibilities with some programs (if the programs are not fully RFC-compliant). This behavior is allowed by the RFCs. This will usually occur if your DNS servers are not in the same TLD as your domain (for example, a DNS server of "ns1.example.co.uk" for the domain "example.com"). In this case, you can speed up the connections slightly by having NS records that are in the same TLD as your domain. >>70さんのいう通り、前のレンタルサーバのDNSサーバにAレコードを 追加してもらえば、解決するのでしょうか?