SMTP stands for Simple Mail Transfer Protocol. This is the generally accepted protocol

for outgoing e-mail.

Use of SMTP

SMTP service is the side of e-mail that allows clients to send outgoing e-mail messages

to any valid e-mail address. The SMTP server performs two basic but important functions.

First, it verifies that anyone attempting to send outgoing e-mail through the SMTP server

has the right to do so. Secondly, it sends the outgoing mail and if undeliverable, sends

the message back to the sender. Think of the SMTP server in terms of your local post office.

Just like snail mail, e-mail is routed in a similar fashion. While it does not cost a client extra

charges to send an e-mail, they must have permission to send the outgoing e-mail message.

The post office requires postage to send the message to the recipient. Think of checking

before sending the same as buying a stamp at the post office.

Once this requirement is met the mail is sent to the recipient. However, problems can

occur both in the delivery of e-mail and postal mail. Mail is sent to addresses which do not

exist, and are therefore returned "address unknown" or "user unknown". Just like the

postal service returning your mail with a message "stamped" on it as to why it was not

deliverable, so will our SMTP server. When e-mail "bounces", or is returned to you, it is

done so because it was undeliverable for one reason or another.

Finally, you need to configure your e-mail client so that it knows what SMTP server to use

for sending outgoing e-mail messages. In order to send mail through the proper SMTP

server, configure your e-mail client to access the SMTP (Outgoing Mail) Server:

mail.your-domain.com.