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The Complete Guide to Email Authentication, Part 5

This is part 5 of an 8 part series on Email Authentication, to go to part one click here. DomainKeys DomainKeys is a domain-level authentication standard that uses public/private key encryption, DNS, and multiple policies to prove the legitimacy and contents of an email message. It verifies the domain used in the “from” or “sender” header. […]...

How to Test SMTP Relay Service Connection Issues With This Powerful Telnet Alternative

Get step by step instructions on how to test your SMTP relay connection with SocketLabs’ telnet alternative....

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....

Setting Up SMTP in Gmail: Do You Know the Limits?

Looking to setup SMTP in Gmail? For most small senders, Gmail SMTP is a quick setup. However, Gmail’s SMTP server comes with serious limitations......

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 […]...

Email Whitelisting: A Dying Practice

What are email whitelists and are they still relevant to you in todays highly technical email industry? An email whitelist is a......

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 […]...