How to block spam email

[LanceAllen]

Hello, I've been receiving numerous spam emails for recipient addresses that we no longer use. I attempted to block them using the Blacklist and spam.blacklist.rules, but it didn't work. Do you know any way to block these email?

[pdwalker]

Is this still an issue for you?

There is a way to configure postfix to know which email addresses are valid and immediately drop those messages to invalid email addresses. That may be a workable solution for you.

It's called the postfix address verification.