domain validation

[amus manj]

Is there a java api to validate domain name entries ?
getByName() does it to some extent, but not the right one to use though.
Eg: getByName() fails to identify sun.com as a valid domain name.

[Joe Ess]

Please do not post the same question in multiple forums.

[Van Glass]

To do this you would need to use Dns to validate the domain using a reverse dns lookup.

http://www.jscape.com/secureinetfactory/docs/javadoc/index.html

See the com.jscape.inet.dns.DnsRequest class for an example of how to get mail domain records for a domain name.

[Stan James]

There is of course no way to do it with zero network overhead. Look into InetAddress getByName, isReachable, etc. See if one of those gives the expected results on a good domain and a bogus one.