uschar *dkim_signers = NULL;
uschar *dkim_signing_domain = NULL;
uschar *dkim_signing_selector = NULL;
uschar *dkim_verify_signers = US"$dkim_signers";
uschar *dkim_signers = NULL;
uschar *dkim_signing_domain = NULL;
uschar *dkim_signing_selector = NULL;
uschar *dkim_verify_signers = US"$dkim_signers";