Sendmail 8.13 companion

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If you had a list of words to describe sendmail, you'd likely include reliable, flexible, configurable, complex, and daunting, but not easy. Even seasoned users can struggle with its intricate configuration files. However, with determination and a solid reference, mastering this program is achievable. When a major point release occurs, such as sendmail V8.13, where do you turn for guidance? The sendmail 8.13 Companion serves as an excellent resource, documenting improvements in V8.13 alongside its release. It emphasizes critical changes that enhance sendmail's performance, especially in the context of rising spam and the need for encrypted connections on mobile devices. Many updates in V8.13 address spam concerns, making it essential for anyone dealing with email security. V8.13 introduces new features like SPF support in the Milter library, simultaneous connection control, and high connection rate management. These enhancements make upgrading worthwhile, and the Companion is key to understanding them. Divided into twenty-five chapters that align with the third edition, the Companion allows users to easily locate updates relevant to their needs. This release has introduced more features and changes than any previous dot release, making the Companion an indispensable tool for anyone setting up or managing sendmail, even if they aren't ready to upgrade.