[fsckboy]

the article is very poorly written on one really important dimension, and that is inbound email vs outbound. "Does mail you send get caught in filters you don't control?" vs "how should you handle inbound mail through the spam filters you must configure."

the portion of the article that you are quoting seems to mean that his domain/subnets have a perfect record of not sending any spam.

in the weighting system in my head, people who don't meticulously keep track of differences like this in a writeup make me worry that they weren't keeping track when working on the problem itself either.