NOTE FROM THE AUTHOR
These guides are the result of years of tinkering with the anti-spam features of Postfix, and while I haven’t updated them in a long time, they are still useful to many people.
I have been very happy with the results of implementing all of the features listed in this guide, though there are always more things that can be done.
If you have an idea how to make this guide better, thoughts about anti-spam features that are not described here, would like to discuss or rant about spam, or just want to say hi, please feel free to send me an email.
While a simple email is more than enough, if you want to do so, you can email me a photo of the server that is using the information in these guides.