What causes the blue banner on encrypted emails?
Posted by Carlos Rios on 17 November 2017 07:36 PM

When an email is encrypted by the ZixGateway, a blue banner with the text "This message was sent securely using ZixCorp." is added to the top of the message. This banner informs the recipient that their message was transmitted securely. This header is added when at least one of your encryption policies is triggered.

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.

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