Tracert Example
From a DOS prompt, enter tracert followed by a domain name.
For example, entering
tracert majordomo.com
yields results such as the following:
Tracing route to majordomo.com [207.67.22.81]over a maximum of 30 hops:
1 <10 ms <10 ms <10 ms node3-3.trendmicro.com [209.76.213.3]
2 <10 ms <10 ms <10 ms node33.trendmicro.com [209.76.211.33]
3 10 ms 10 ms <10 ms ign2-h1-58.snfc21.pbi.NET [206.171.157.17]
4 <10 ms 10 ms <10 ms ign0-fe12-1-0.snfc21.pbi.NET [209.232.130.66]
5 30 ms 100 ms 20 ms 165.87.161.6
6 20 ms <10 ms <10 ms 165.87.33.114
7 <10 ms 10 ms 20 ms 165.87.160.225
8 10 ms 30 ms 10 ms br1-a350s1.sffca.ip.ATT.NET [192.205.31.62]
9 51 ms 70 ms 70 ms 12.127.14.69
10 70 ms 70 ms 70 ms ar1-a3120s1.cgcil.ip.ATT.NET [12.127.0.137]
11 50 ms 60 ms 71 ms 12.127.225.14
12 60 ms 61 ms 70 ms baryon.atm.inc.NET [207.67.1.3]
13 140 ms 80 ms 70 ms core-2.mke.inc.NET [207.67.1.21]
14 90 ms 100 ms 70 ms core.gb.inc.NET [207.250.99.2]
15 * * * Request timed out.
16 91 ms 110 ms 120 ms ns2.sparknet.NET [207.67.22.81]
Trace complete.
Majordomo, it appears, is hosted by sparknet.net. A quick check of their domain on the Internet tells us that their sister domain, sparklist, is an email list hosting service.
Create a rule to block messages from majordomo.com, and for that matter, sparknet.net, if you do not want to receive email routed by either of these two domains.
See also:
Tracking Spammers
Tracking Spammers: Tools
Tracking Spammers: Time savers