ExOConfig/Rules/X-SM-outgoing-header-cleaning.json

{
    "Name" : "[SEPPmail] - Clean outbound SEPPmail header outgoing",
    "Comments" : "Removes outgoing SEPPmail x-headers from E-Mail.",
    "SMPriority" : 10,

    "Version":
    {
        "Default":
        {
            "FromScope" : "InOrganization",
            "SentToScope" : "NotInOrganization",
            "RemoveHeader" : "X-SM-outgoing",
            "Priority" : 0,
            "SetAuditSeverity" : "DoNotAudit",
            "Mode" : "Enforce",
            "SenderAddressLocation" : "Header"
        }
    }
}