Issues with Email auto-forwarding
Posted by on 01 July 2014 11:01 AM
Proofpoint Essentials does not support the Outbound relaying of any email traffic for domains which do not belong to our customers and which have not been preregistered for a customer running the Business or Professional package.


As such Auto-forwarding messages should be relayed using DNS only.

ERROR: This domain name does not match domain registered in the license key file (, allowed domains:,localhost, please change the product path to match the domain under Admin CP > Settings > General Settings
This product will not work properly unless untill that value is changed.

For more information please contact Kayako support at