If you need to send out e-mail messages through an email address with your domain, you have to make sure that the provider will provide you with access to their SMTP server. The aforementioned is the software that permits e-mails to be sent out. SMTP is an abbreviation for Simple Mail Transfer Protocol and it deals with all outbound email messages from programs, webmail and contact forms. Whenever a message is sent, the SMTP server confirms with all of the DNS servers throughout the world where the e-mails for the receiving domain are taken care of and as soon as it gets this info, it will connect into the remote POP/IMAP server to find out if the recipient mail box is out there. When it does, the SMTP server sends the email body while the receiving server delivers it to the mailbox in which the recipient can open it up and see it. With no SMTP server on your server, you will not be capable to mail out e-mails in any way.