Email bounce handling on Khoros communities

I don't know what you mean by EMCS.
Yes it is only for email notifications, it is strictly related to email bounces and trust scores for domains.

The questions raised details 2 things.

I assume Khoros by default does bounce management due to extra headers in the email envelope, how does Khoros treat such cases namely does it turn off email notifications if any action is even performed? and if so how do we tell using existing apis the status of said adresses/accounts to propagate this further in our systems.

And the other, assuming we change the "from" field on emails this automatic handling will be lost, instrumentation headers are gone (inspected actual email envelopes manually), how would we using existing apis ping Khoros to disable email notifications if we deem the email to be hard bounced.

Apis we investigated and problems with them are mentioned in the first post.

Our context is that we need to forward all mails through our own servers which is happening if the "from" setting in the admin is altered to point to our domains. But now email debounce not happening and the domain score for "subscription mails" coming from Khoros impact the whole domain. Ideally we would need a way to stop emails being generated in the first place and we haven't found
1) ways to detect bounces
2) create a diff of what accounts have / have not been already disabled and a reasonable way to ping and change the status for accounts