You work for an ISP and you are providing phone support help

You work for an ISP, and you are providing phone support, helping a customer set up Microsoft Office Outlook to connect to your company’s mail servers. You provide the name mail.company. com so that the customer can configure Outlook to connect to the ISP’s outgoing mail server, allowing the customer to send e-mails. In Outlook, what field must the customer use to enter the outgoing mail server name?

A. DNS

B. IMAP

C. POP

D. SMTP

Solution

Ans is Option B:SMTP

When a client connects to a server, both computers must be speaking the same language, called a protocol. In the case of mail servers there are four protocols that can be used. The most widely used is POP3, for Post Office Protocol version 3. It is almost always used in conjunction with SMTP, or Simple Mail Transfer Protocol. POP3 is used to retrieve mail from the server (incoming) while SMTP is used to send mail through the server (outgoing). IMAP, or Internet Message Access Protocol, is a newer protocol that is not used as widely as POP3. HTTP, or HyperText Transfer Protocol, is actually the protocol used by Web servers, but it can also be used to access mail in special cases such as Hotmail. Outlook Express supports all four of these protocols. While all four protocols perform mail functions, there are important differences in how they function on the server.