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Proofpoint Essentials: IP address on the Sorbs Blacklist 01.18.2017
Posted by Sue Gildea on 18 January 2017 05:58 PM

Please be advised that IP Address is on the Sorbs Blacklist.

If a server or firewall is utilizing a RBL (Roaming Block List) service, it will in turn do a look up from Sorbes and will block the message. 

In order to work around this, you will need to turn the service off or add the IP address to the allow list of the RBL service they are using.

Excel Micro made Proofpoint aware of this IP address issue and they are in the process of getting it delisted from the Sorbes list.

We will continue to update as they become available. Thank you. 

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