We are having the same issue of bounces not being recorded in Odoo, however being recorded in Amazon AWS SES. Might it have something to to with the fact that notifications of bounces should be sent to bounce alias (e.g. bounce@yourdomain.(odoo.)com) by Amazon SES? (See this link: https://aws.amazon.com/blogs/messaging-and-targeting/amazon-ses-set-up-notifications-for-bounces-and-complaints/)

and that Odoo needs to go get these notifications, in the case of a specific domain through an incoming mail server?

If somebody knows, please advice :)

I also do the same thing. If a solution is found, please share it with us