This setting is described here:
Mail Limiting Features percentage of failed or
I'm not really sure how useful this feature is since a greylisting deferral will count towards the limit. It would be more useful if this setting was based purely on the 5xx errors.
Mail Limiting Features percentage of failed or
I'm not really sure how useful this feature is since a greylisting deferral will count towards the limit. It would be more useful if this setting was based purely on the 5xx errors.