Articles tagged: challenge/response

Why I (Still) Don’t Like Challenge/Response Spam Blockers

An error caused my newsletter to come “From” the wrong address. Flooded with challenge/response mails, I wonder: what other messages are you missing?

My Flood of Auto-Responses

I made a minor change to the newsletter and as a result was flooded with auto-responses when it sent. What I learned about auto-responses is important to know.