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SMTP stands for Simple Mail Transfer Protocol. This is the generally accepted protocol for sending e-mail messages between servers; most e-mail systems that send mail over the Internet use SMTP to send messages from one server to another; the messages can then be retrieved with an e-mail client using either POP or IMAP.
Mail servers can broadly be divided in incoming mail servers (POP3 and IMAP) and outgoing mail servers (SMTP). The most popular and well known mail servers are sendmail, Microsoft Exchange Server, Postfix and Exim.
POP3 or Post Office Protocol version 3 is the only major e-mail protocol that has a version number attached to it.
Port 25 (Simple Mail Transfer Protocol)
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SMTP -(Simple Mail Transfer Protocol) is what is used with the basic email. There is also and extended one (ESMTP)- (Extended Mail Transfer Protocol). Hope this helped.
SMTP (simple transfer mail protocol) which is used as the outgoing mail server and it uses port number :25 POP3 (Post Office Protocol 3) is the most recent version of a standard protocol for receiving e-mail. POP3 is a client/server protocol in which e-mail is received and held for you by your Internet server and it uses port 110
SMTP (Simple Mail Transfer Protocol) - sends mail only POP (Post Office Protocol) - retrieves mail and manages mailboxes IMAP (Internet Message Access Protocol) - retrieves mail and manages mailboxes
MTA (Mail Transfer Agent) and SMTP (Simple Mail Transfer Protocol).
Simple Mail Transfer Protocol outgoing mail servers support for Yahoo com,com cast, MSN,SBC, Version and Third party Internet Service Providers. When a company is purchased by another company, the POP3 and SMTP server names often change. Simple Mail Transfer Protocol one of th limitations original is that has no facility for authentications of senders. Spam it is enables by several factors. For more information you can visit website:http://www.iyogibusiness.com
SMTP because SMTP handles outgoing mail while Post Office Protocol (POP or POP3) is responsible for incoming mail.
Outgoing mail server (SMTP): smtp.charter.net