What is an SMTP Server?

An SMTP server is a lot like any other server but it is highly specialized in the ability to process and deliver outbound email.

The Complete Guide to Email Authentication, Part 4

This is part 4 of an 8 part series on Email Authentication, to go to part one click here. Sender ID Framework (Sender ID) Very similar to SPF version 1 is SPF 2.0, more commonly known as Sender ID. Sender ID works on the same principles as SPF, with the exception that it not only has […]

The Complete Guide to Email Authentication, Part 3

This is part 3 of an 8 part series on Email Authentication, to go to part one click here. Sender Policy Framework (SPF) For purposes of clarification, the term SPF used in this section refers to SPFv1 or SPF Classic. SPF 2.0 will be discussed in the next section under Sender ID. Sender Policy Framework (SPF) […]

The Complete Guide to Email Authentication, Part 2

This is part 2 of an 8 part series on Email Authentication, to go to part one click here. A Brief History of Email Authentication Meng Weng Wong and Sender Policy Framework The concept of email authentication – validating sender email either by IP address or encryption – dates back as far as 1997. Multiple specifications […]

The Complete Guide to Email Authentication, Part 1

Introduction The objective of this paper is to provide a brief overview and description of the most commonly used email authentication practices and methodologies. It is not exhaustive in nature, and does not cover every aspect of every technology in use today. It does, however, cover the main topics and points of discussion with regard […]