DNSSEC

[Stephane Bortzmeyer]

On Tue, May 04, 2010 at 10:27:25AM -0400,
 Linux Addict <linuxaddict7 at gmail.com> wrote 
 a message of 89 lines which said:

> lacks EDNS, defaults to 512"
> DNS reply size limit is at least 490"
> "Tested at 2010-05-04 14:21:02 UTC"

You edited the responses (which includes an IP address). Is it the IP
address of your resolver? There is may be a forwarder which does not
have EDNS.

Second possibility, a middlebox mangles your packets and deletes EDNS
options.