One easy measure you can pick up to help spot fake e-mail messages is to learn the meaning of the Top Level Domain (TLD) or last part of the site name in a web link (URLs) or an email address. The TLD are the three letter extensions used at the end of the domain name (e.g. .com). The following are examples of commonly used TLDs.
.gov - *Restricted for government use. Note that .gov is the only restricted extension; all the others listed are intended for a purpose, but that doesn’t mean they cannot be used for other unrelated purposes.
.edu - Intended for educational use.org Intended for individual or organizational use
.com - Note that .co.uk is the equivalent of .com in the United Kingdom (Great Britain). Intended for commercial use .net Intended only to be used by network providers
.biz - Intended to be used by businesses
.info - Intended for informative web sites
Country codes: .bz (Belize), .ca (Canada), .cn (China), .de (Germany), .es (Spain), .fi (Finland), .fr (France), .is (Iceland), .it (Italy), .kr (South Korea), .mx (Mexico), .nl (Netherlands), .ro (Romania), .ru (Russia), .to (Tonga), .uk (United Kingdom), .us (United States) - Come across a country code not listed here? Look it up in a search engine of your choice (e.g. google or yahoo).