on 2019/8/29 11:30, Bill Cole wrote:
Which is their absolute right to do for whatever reason they see fit. It
is NOT "abuse" in any sense.
Andrew didn't mention the enhanced status codes of RFC3463, which
include the '4.7.0' you are seeing in error messages. That is a generic,
intentionally vague, and perfectly valid status code.
Thinking the IM (like whatsapp), user send a message, the peer always
says: system temporary error, please try again. That would be a terrible
user experience. So as the email system. :)
Just my thought.
regards.
