how can you fake a DNS???
 

Ok i received some spam email i and wanted to know where it was coming from, so i did a trace route on Samspade.org


But the thing is htat i saw that htey had fake DNS entry when i did a trace route. How can some one fake that many DNS?

3 130.152.80.30 7.832 ms isi-1-lngw2-pos.ln.net [AS226] Los Nettos origin AS
4 198.172.117.161 9.176 ms ge-2-3-0.a02.lsanca02.us.ra.verio.net [AS2914] Verio
5 129.250.29.132 9.905 ms ge-6-0-0.r02.lsanca01.us.bb.verio.net [AS2914] Verio
6 205.171.4.37 6.761 ms bur-brdr-01.inet.qwest.net (Fake rDNS) [AS209] Qwest Communications
7 205.171.13.9 9.617 ms bur-core-01.inet.qwest.net (Fake rDNS) [AS209] Qwest Communications
8 205.171.13.6 7.701 ms bur-core-03.inet.qwest.net (Fake rDNS) [AS209] Qwest Communications
9 205.171.8.242 14.304 ms svl-core-01.inet.qwest.net (Fake rDNS) [AS209] Qwest Communications
10 205.171.8.130 53.813 ms iah-core-01.inet.qwest.net (Fake rDNS) [AS209] Qwest Communications
11 205.171.5.105 87.887 ms tpa-core-02.inet.qwest.net (Fake rDNS) [AS209] Qwest Communications
12 205.171.27.190 87.385 ms tpa-core-03.inet.qwest.net (Fake rDNS) [AS209] Qwest Communications
13 205.171.27.30 87.551 ms tpa-edge-03.inet.qwest.net (Fake rDNS) [AS209] Qwest Communications
14 63.152.5.78 88.945 ms DNS error [AS209] Qwest Communications
15 63.234.80.169 89.014 ms DNS error [AS209] Qwest Communications


Anyone knows what they did there?

What is a "doot"?

I think it is French for "Cow's Penis".

That says rDNS , likely what you have is a mismatch between the forward and reverse name resolutions.

Don't trust 3rd parties for tracing anyways, you want
to know from where you are not them.

If you don't have a unix box handy, windows does have
some basic utilities. Start a command shell and run
tracert somehost.com