I’m looking to set up a mail server on Linux that can receive emails, analyze them using SpamAssassin, and then return the spam score results. My goal is to integrate this into an application where I can check the spam score before sending out email blasts.

Could anyone provide guidance or a step-by-step approach on how to achieve this? Specifically:

How do I set up a mail server on Linux to receive incoming emails?
How can I configure SpamAssassin to analyze these incoming emails for spam detection?
Once SpamAssassin has analyzed an email, how do I retrieve the spam score programmatically?
Are there any best practices or considerations I should keep in mind for integrating this spam score check into an application?
Any insights, examples, or recommended resources would be greatly appreciated. Thanks!