On 6/29/24 12:55, John Levine wrote:
No it isn't "entirely reasonable" for a major Internet application to only work for a small number of pre-authorized sender IP addresses.Because these days if you're not major, you are more likely to have your mail blocked or treated as spam.That's basically it. Since 90% or more of all email is spam, it is entirely reasonable to assume that mail from a source you haven't seen before is spam.
(It might be somewhat understandable that an operator would choose to work this way, in the short term, but it's tremendously bad for the Internet.)
Keith
