I want to ban some people from emailing anything into any email address on my server.

I use an alabanza-based server.

I have tried SpamBouncer and didn't understand the installation or configuration, in general, I just couldn't get it to work.

I have SSH access and I can access the procmailrc file from my file manager.

DOes anyone have a sample of the kind of code I would insert into the file to block and address.

Optionally (and preferable), I would also like the ability for the server to send a 'rejection' note saying that the message has been rejected by the server (sort of like a MailerDeamon).