Courier Mail Transfer Agent (MTA)

The Courier mail transfer agent (MTA) is an all-in-one mail and groupware server. It's built on open standard protocols, like ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. This means it plays nice with a lot of different systems!

Key Features of Courier

Courier gives you ESMTP, IMAP, POP3, webmail, and mailing list services all in one spot. You can turn these features on or off whenever you want. So if you only need webmail today but not tomorrow? No problem!

Web-Based Calendaring

One cool addition is that the Courier mail server now has basic web-based calendaring and scheduling services right in its webmail module. And guess what? More advanced groupware calendaring services are coming soon!

A Bit of History

The Courier mail server came together from several related projects merging into one robust solution. It's also got some handy SMTP extensions for managing mailing lists and filtering out spam.

Email Relay Functionality

You can use the Courier mail server as an intermediate mail relay too! This means it can pass emails between your internal LAN and the Internet or deliver them straight to your mailboxes. It primarily uses maildirs for storing emails but can also handle legacy mailbox files.

User-Friendly Configuration

The configuration for the Courier mail server is pretty straightforward since it's set up with plain text files and Perl scripts. Plus, most settings can now be adjusted right from your web browser using the web-based admin module.

Email Services for Everyone!

This flexible system can provide email services for regular operating system accounts as well as virtual accounts managed through databases like LDAP, MySQL, or PostgreSQL. If you're ready to enhance your email experience with a reliable tool like Courier, check out this link to download Courier today!