Post Office Protocol

The Post Office Protocol (said also POP) is a protocol that has the task to allow, by means of authentication, the access to a account of present e-mail on a host in order to unload the email of the relative one account. Demon POP (in version 3) remains in attended on door 110 of the host (of default, but logon TCP from part of a client can also be various) for one. The e-mail messages, for being read, must be unload on the computer (this to you are a remarkable difference regardingthe IMAP), even if are possible to leave of one copy on the host. Protocol POP3 does not preview some type of coding, therefore the password used for the authentication between serveur and client pass in luminosity. In order to resolve this possible problem it has been developed extension APOP that uses MD5.