I have been getting countless emails with this error ever since I was assigned a Case on my Salesforce account.
Error message below:
An error occured while trying to deliver the attached email. You may wish to report the following information to the owner of [e-mail redacted].
Too many retries
The inbound email could not be processed.
This trailblazer community thread describes the exact same problem that I am facing, but there is no solution listed there.
I have already checked My Email Settings and My Email to Salesforce, the settings are standard but I have unsubscribed from Subscriptions and added my email as Acceptable Email Address.