Another method of salt production used by Morton Salt is the evaporation of salt brine by steam heat in large commercial evaporators, called vacuum pans. This method yields a very high purity salt, fine in texture, and principally used in those applications requiring the highest quality salt.
And finally applications use TCP or UDP connections to exchange the data that makes up the application protocol: logging in to servers, requesting and transmitting Web pages, delivering e-mail, and so on.
What Is Relaying? If you've ever received unwanted spam in your mailbox, then you already know what relaying is: using a server to accept and then resend mail to recipients on another server. In the simplest case, alice@a.com connects to the SMTP server at b.com and uses it to deliver a message to charlie@c.com.