When you create, update or delete MX or DS records, please use the following changes:
'rdata' => [
'exchange' => 'example.com.',
'preference' => 20
], $rdata = [
'keytag' => 2371, // Key tag of the DNSKEY
'algorithm' => 8, // Algorithm used (e.g., 8 = RSASHA256)
'digestType' => 2, // Digest type (e.g., 2 = SHA-256)
'digest' => '5E2B4D2C35B2EFA8F2C1D9C4A2DFF5B2904B529A3F1E9E3A56E4F4E6C7B92DF2'
];