wrong DNS resolution

I have 2 servers with similar configuration but one of them give me different result from a nslookup command

The first one is working correctly and here is the answer I have:

Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: vdemopro1260sha.xxxcom
Address: 58.246.89.xx

On the other one, the same command give me a wrong address (in fact this address is the server IP address).

[ansiuser@vrdopsxxdsy terminator]$ nslookup vdemopro1330sha.xxx.com 8.8.8.8
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
Name: vdemopro1330sha.xxx.com
Address: 10.91.78.xx

The /etc/resolv.conf file is the same for both servers

search dmz.ap.3ds.com dsone.3ds.com ds
nameserver 10.91.78.5
nameserver 10.91.78.6

I don't understand what is causing differences in behaviour. Is someone has an idea? Thanks

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