Email Architecture and How It Works : Same Domain and Different Domain
Email Architecture and How It Works : Same Domain and Different Domain Electronic mail has three parts: envelope, header, and body of email. Envelope determines where the email will be sent, or if it can not be delivered, where the email will be returned. Header is a property pair and its value corresponds to RFC2822. Headers can contain various information about emails along the way from the start of emails processed by the sending server or MUA to the receiving server such as the date, MUA used, and the server being traversed. Headers may contain information that is specific to a particular application that may be useful for the application but will be ignored by email system. The information begins with "x-". While the body of the email is the content of the email itself. Email body in the form plain text, although sometimes the plain text is the result of encryption. Header is one of the important sources of information in email. If there is a problem with ...