How does temporary blocking of a domain's outgoing emails for too many deferred or failed emails work?
There are two settings that will determine when outgoing emails are temporarily blocked.
- Maximum percentage of failed or deferred messages a domain may send per hour
- Number of failed or deferred messages a domain may send before protections can be triggered
Outgoing emails from a domain will be temporarily blocked if both of the following conditions are true:
- The percentage of failed or deferred messages, out of the total number of sent messages, is equal to or greater than the specified percentage for the past hour.
- The domain has sent at least the number of failed or deferred messages that the Number of failed or deferred messages a domain may send before protections can be triggered setting specifies.
These settings can also be applied per package and will apply to any accounts using that package.
The documentation for these setting is located below: