Email Services

7 Guides Available

Quick Guide to POP and IMAP: Protocols for Accessing Email

Universal email retrieval is all thanks to open standards. Regardless of the hardware and software used, email is accessed via one of two specifications: Post Office Protocol (POP) or Internet Message Access Protocol (IMAP).

Quick Guide to SMTP: The Protocol That Powers Email

Instant messaging, Slack, and Zoom may get all the attention lately, yet email has remained the most ubiquitous communication method of the Internet for decades. One open standard makes it possible for any user, on any platform, to exchange email with anyone else: the Simple Mail Transfer Protocol (SMTP). SMTP works as a universal mail carrier, connecting users around the world regardless of the hardware and software they use.

How to Install and Use Postal

Many small organizations want to use a self-hosted mail server to send and receive emails instead of a cloud-based mail service. Postal is a fully-featured open-source email platform that is free to install and operate. This guide explains how to install, configure, and use Postal. Additionally, it provides information about the various DNS records that are also required.

Using MagicSpam to Secure your Email Server

MagicSpam is a powerful anti-spam and email security solution for Linux systems. It not only stops inbound spam from entering mailboxes but also provides email authentication security. This prevents email accounts from being compromised and abused by threat actors.

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Configuring a Postfix Server to Send Email through Gmail or Google Workspace

Using Google Workspace for Email

There are many options for running your own email server, and with applications like Citadel, hosting your own email stack can be quite straightforward. Nevertheless, managing independent email servers can be daunting, given email’s importance and potential for complexity. This is particularly true when you have multiple users and/or complex filtering schemes. Many people prefer to delegate their email to a third-party email service like Google so they can better concentrate on the administration of other, more mission critical services.

Configure Postfix to Send Email Using External SMTP Servers

Note

This guide was originally written for Debian 7. It has since been tested to work with Debian 9.

You may want to configure Postfix to use an external SMTP provider like Mandrill, and SendGrid so you no longer have to build, maintain, and scale your own SMTP relay server. Another reason is to avoid getting your mail flagged as spam if your current server’s IP has been added to a spam list. This guide shows you how to configure Postfix to use an external SMTP provider and also shows specific examples for Mandrill, and SendGrid. However, you can apply the steps in this guide to configure Postfix to use any external SMTP provider.

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