I block SES too. I couldn't find a reasonable way to report abuse, and the system does nothing to enforce opt-outs/unsubscribe. It's an absolutely horrible service to be on the receiving end of.
It handles standard complaints or bounces while adding to global or account supression lists. If an account exceeds a complaint ratio, it is suspended.
What are you aiming to accomplish by blocking a cloud services provider and not a particular sender domain?
So I should point out unfair sample set - self-host me, myself and I, and no-one else.
When I gave up on SES, I was getting annoyed by a commercial list that had no unsubscribe (it did, but went to a domain that didn't exist). So I had a grep through to see what I'd be missing, and it was 100% worth missing. I don't think I've seen any other provider that'd be 100% - usually when they get that bad it's just here-today-gone-tomorrow hosts.
The impression I get is that providers like mailchimp where they're actually packaging it as a service, so they handle unsubscribe, campaigns, they have an abuse@ contact that actually works .. these services deliver content. Dumb pipes that only exist because the cloud provider's regular IP space has a trash reputation, tends to carry everything that gave the regular IP space that reputation in the first place. They're just weaponising the idea that no-one would be dumb enough to block amazon. I'm dumb enough.
Actually their lack of proper enforcement of unsub etc is indeed dumb, I was really just curious because out of everyone I seem to get less junk via SES (pretty much everyone else ends up spewing junk from stolen accounts or trial accounts etc) and I've reported stuff to the usual clowns like mailgun in the past and got zero response so they're out, along with sendgrid.
Also self hosted, oldest domain probably about 15 years - dropping the above hasn't actually affected my as negatively as people getting gsuite wrong and failing dkim etc
