Top Level Domain (TLD)

A Top Level Domain (TLD) is the last segment of a domain name, representing the highest level in the domain name system. It typically consists of two or more letters and indicates the purpose or geographical location of a website or entity. Examples include .com, .org, and .net. TLDs help categorize and organize websites on the internet, facilitating easy navigation and identification.

Here is a list of some typical Top Level Domains (TLDs) and their envisioned use cases:

Please note that this list is not exhaustive, as there are numerous TLDs available, including country-specific domains and newer generic TLDs.

Is there a list of mail relevant TLDs?

Spamhaus has a list of The World's Most Abused TLDs which you can find here: Spamhaus: The World’s Most Abused TLDs.

What is a good TLD for a mail server domain?

This is dependent on the use case you have. We recommend using customer domains for single mail systems of a company. If you want to run a general purpose with hundreds or even thousands of clients, then .net or .com are a good choice, as they have a great reputation for mail systems.

If you do stupid things or abuse a domain for spam, your system will get in trouble independent of the domain or TLD your systems are setup on.