Postfix

Postfix is an email server software that manages the sending, receiving, and routing of email messages on a computer network. Think of it as a digital mail carrier: it receives outgoing emails from users, helps direct them to the right destination, and handles incoming emails for users. Postfix is known for being secure, reliable, and efficient, making it a popular choice for organizations to manage their email communication. Essentially, it's the behind-the-scenes system that ensures emails reach the correct inboxes quickly and safely.