> I don't doubt what you are saying.? But if AWS is so horrible and
across the board everyone thinks
> anything coming from it is spam, SA isn't flagging it, and
mail-tester.com isn't flagging it,
> and both have pretty extensive blacklist references (??).? I'm still
confused.
Because they are paying to be whitelisted. Amazon used to be in the top
10 of abuse networks[1]. The only way to get of such a list fast, is
either blocking all outgoing traffic on ports 25,465,587 or pay someone.
I have had to reconfigure spamassassin not to use the whitelists. Sooner
or later more will do this, because what use is a whitelist, if it holds
ip addresses that send out spam?
Furthermore tools can't be trusted that much. I am blocking dns request
from some of those tools. I am even blocking amazon cloud on the web
servers, saves lots of cpu power! This year I am going to advise all
clients (not so many any more, grrrr ;) that if they do not have
robots.txt on their website we are going to put a default one. That one
allows the most common search engines (I certainly do not want to give
google an advantage here).
From a security perspective this is also advisable because hackers are
scanning for old versions, and without such a robot text, I really do
not have good reason to report abuse.
[1]
https://www.spamhaus.org/statistics/networks/