Postfix is an open-source mail transfer agent (MTA) used for routing and delivering email on Unix-like systems. Known for its reliability, security, and ease of use, Postfix is commonly employed for managing both incoming and outgoing email, supporting a wide array of features such as email encryption, spam filtering, and virtual domains. It is ideal for personal use, small businesses, and large-scale email systems alike.

Features of Postfix:

Handles email delivery using SMTP, ensuring fast and reliable email transmission.
Supports secure email communication via TLS encryption.
Provides spam filtering capabilities, often integrated with third-party tools like SpamAssassin.
Offers support for virtual domains and mailboxes, making it suitable for hosting multiple email addresses.
Open-source software with an active community of developers and users, ensuring constant improvements and updates.

To check the Postfix version:

$postconf mail_version

Disclaimer: Postfix is open-source software released under the IBM Public License 1.0. It is not affiliated with, endorsed by, or sponsored by any other company. Postfix is provided "as is," without any warranty, express or implied. Users utilize this software at their own risk. The developers and contributors to Postfix hold no responsibility for any damages, losses, or consequences resulting from the use of this software. Users are advised to carefully review and comply with licensing terms and any applicable regulations while using Postfix.

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