Reverse address problem

[Soledad]

We have change our domain from medusa.es to fujitsu.es. And now, we have
problems to resolve reverse address. I can resolve in my system but I can
not do it in others server.

> 19.140.194.in-addr.arpa
Server:  ns.fujitsu.es
Address:  193.148.29.100

19.140.194.in-addr.arpa nameserver = ns.fujitsu.es
19.140.194.in-addr.arpa nameserver = ns1.fujitsu.es
19.140.194.in-addr.arpa
        origin = ns1.fujitsu.es
        mail addr = postmaster.fujitsu.es
        serial = 1999051301
        refresh = 86400 (1 day)
        retry   = 7200 (2 hours)
        expire  = 2592000 (30 days)
        minimum ttl = 172800 (2 days)
19.140.194.in-addr.arpa nameserver = ns.fujitsu.es
19.140.194.in-addr.arpa nameserver = ns1.fujitsu.es
ns.fujitsu.es   internet address = 193.148.29.100
ns1.fujitsu.es  internet address = 193.148.29.103

> server artemis.ttd.net
Default Server:  artemis.ttd.net
Address:  194.179.1.101

> 19.140.194.in-addr.arpa
Server:  artemis.ttd.net
Address:  194.179.1.101

Non-authoritative answer:
19.140.194.in-addr.arpa nameserver = ns.medusa.es
19.140.194.in-addr.arpa nameserver = ns1.medusa.es

Authoritative answers can be found from:
19.140.194.in-addr.arpa nameserver = ns.medusa.es
19.140.194.in-addr.arpa nameserver = ns1.medusa.es
>
> ns.medusa.es
Server:  artemis.ttd.net
Address:  194.179.1.101

*** artemis.ttd.net can't find ns.medusa.es: Non-existent host/domain
>

ns.medusa.es and ns1.medusa.es are not a valid DNS server, at least, to this
ip address.

Can anybody tell me how to find where the problem and solution is?.

Thanks in advance.

Soledad Serrano Oca
email: soledad at fujitsu.es