Bounced email policy
Our shared hosting plans have a policy for bounced, or undeliverable emails. We throttle email users to allow maximum of 25 bounces per hour. If you are using bulk mail lists and do not have a method to remove dead email address and are found to be continually sending to a bad address causing a large amount of bounces and an undesirable waste of resources your account may be limited for sending bulk email.
Our policy was created to follow industry best practices and generally accepted guidelines taken from Spam.org