If you would like to send out e-mail messages using an e-mail address with your very own domain, you have to make sure that the company will give you usage of their SMTP server. The aforementioned is the software which enables e-mail messages to be dispatched. SMTP is an acronym for Simple Mail Transfer Protocol and it handles all outbound e-mails from programs, webmail and contact web forms. When a message is sent, the SMTP server checks with the DNS servers around the world where the e-mails for the receiving domain name are managed and once it obtains this info, it creates a connection into the remote POP/IMAP server to check if the recipient mail box exists. In case it does, the SMTP server sends the message body while the receiving server sends it to the mailbox in which the recipient can open it and read it. With no SMTP server on your server, you will not be able to mail out messages in any way.