ExOConfig/Rules/600-X-SM-smarthost-header-cleaning.json

{
    "default":
    {
        "Name" : "[SEPPmail] - 600 Clean outbound SEPPmail header smarthost",
        "Comments" : "Removes outgoing SEPPmail x-headers from E-Mail.",
        "SMPriority" : 6,
        "FromScope" : "InOrganization",
        "SentToScope" : "NotInOrganization",
        "RemoveHeader" : "X-SM-smarthost",
        "Priority" : 0,
        "SetAuditSeverity" : "Low",
        "Mode" : "Enforce",
        "SenderAddressLocation" : "Header"
    }
}