Virtual Domains
While aliases allow you to use fictitious usernames in an email address, virtual domains
take that one step further by allowing you to accept messages for entirely different
domain names.
This is the second piece required for hosting multiple domains (along with masquerading,
as described earlier). The first step is to use masquerading to replace the outbound Reply-
To message with another domain name. The second step is to allow your mail server to
accept messages destined to that domain.
This is done by defining the domain name as a virtual domain. If you want to use your
domain name as your email address, enter it as a virtual domain. When you register your
domain on the Internet, you must also register your server as the domain mail server.
Mail destined to a user on the virtual domain is redirected to a local user account on the
mail server.
Fighting Spam and Viruses
Email is incredibly easy to use, and practically cost-free. That??™s why it??™s so popular with
people. Unfortunately, those same factors are the reasons our mailboxes are inundated
every day with dozens, or hundreds, of anonymous messages begging us to refinance our
homes, buy various drugs, and enhance the body parts of our choice.
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