DkimStatus 
    The DKIM authentication status of the identity. The status can be one of the following:
PENDING– The DKIM verification process was initiated, and Amazon Pinpoint is still waiting for the required CNAME records to appear in the DNS configuration for the domain.SUCCESS– The DKIM authentication process completed successfully.FAILED– The DKIM authentication process failed. This can happen when Amazon Pinpoint fails to find the required CNAME records in the DNS configuration of the domain.TEMPORARY_FAILURE– A temporary issue is preventing Amazon Pinpoint from determining the DKIM authentication status of the domain.NOT_STARTED– The DKIM verification process hasn't been initiated for the domain.