Category: Best Practices view all

What Port Does SMTP Use?

What Port Does SMTP Use?

Port 25 is widely used for SMTP relaying, meaning it's the best port to use for email that is being transmitted from server to......

How to Setup SMTP in Gmail: Do You Know the Limits?

How to Setup 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......

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

How to Test SMTP Relay Server 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 & What Does It Do?

What is an SMTP Server & What Does It Do?

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 […]...

Email Whitelisting: A Dying Practice

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 […]...

Transactional Email & CAN-SPAM: Is Transactional Email Exempt?

Transactional Email & CAN-SPAM: Is Transactional Email Exempt?

The CAN-SPAM Act is a US law which establishes standards for sending commercial email. But what about Transactional Email & CAN SPAM? In this post you'll......