Debian resolves unkown hosts to itself

Hello,

I have an odd thing happening with DNS. When I do something like:

    $ nslookup va.med.gov.
    Server: 206.141.193.55
    Address: 206.141.193.55#53

• server can't find va.med.gov: NXDOMAIN

Makes sense, right. But when I ping va.med.gov from the same server, it seems to resolve to the public ip of the box Im pinging from.

    # ping va.med.gov

    PING mydomain.com (1.2.3.4) 56(84) bytes of data.     64 bytes from host.mydomain.com (1.2.3.4): icmp_seq=1 ttl=64     time=0.013 ms

• mydomain.com ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2002ms rtt min/avg/max/mdev = 0.006/0.008/0.013/0.004 ms

1.2.3.4 is the public IP of the machine I'm pinging from. va.med.gov is in no way affiliated with my domain.

/etc/resolv.conf looks like:

Do you need help?

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    search mydomain.com
    nameserver 4.2.2.2

Any ideas?

Thanks in advance!

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