restrict dns look up

[sunlinux]

Can we restrict dns lookup for a particular domain such as chatenabled.mail.google.com(used for google chat) with iptables or somehow ?

I want to block chat using gmail.com ( gmail suggested the method to block using above method)

[Ricky]

you can either drop queries on port 53 which is for dns but then everything will stop or you can block that particular domain.

See this how a person blocked yahoo messenger using squid

You can also use iptabls to drop that domain request..

Code: [Select]

iptables -A FORWARD -d domain.com -j DROP