Spam blocking with greylisting

Spam blocking with greylisting

One problem with this approach is that in this day and age people expect their email to go through in just a few seconds. I'll often be on the phone and I'll email someone a document and then we'll discuss it a few seconds later, many other people are used to doing similar.

I run a mail system for a medium sized ISP and if there is a problem causing mail delays people quickly notice and either complain or become frustrated. I think that a system where a large percentage of email is delayed for up to an hour will be unacceptable for many people.

Note: you can avoid this step in the future by logging into your LWN account.