Your simple auto-responder for Postfix?

Question

Python

How to make your own and simple? For example, in python or bash. How is this done in general, through milters?
You don't need a complete solution. You need to do it yourself at a low level.

Answer 1

I did it with milter

Answer 2

Read MILTER_README (Postfix before-queue milter support) and FILTER_README (Postfix after-queue content filter). There are specific examples in FILTER_README and it is more suitable for your task, since it does not introduce a delay for a third-party sender (the message is processed after the SMTP session is closed).