When I register DKIM key in two Control Centers, the SMG is creating two different records.
Can I have the same DKIM record on both appliances?
It is possible to maintain the same DKIM record across different environments.
The private key has to be manually created and imported into both SMG hosts, rather than allowing the SMG to handle it automatically.
In any Unix-based system - the admin account in SMG has limited permissions and won't permit it - execute the following command:
openssl genrsa -out <private_key_name>.pem 1024
The command will create a private key to import into both of your environments. After importing, the SMG the end client will be provided with two identical public keys.
It is essential that the PEM key should not exceed 1024 bits in length, as some DNS servers have difficulties accepting longer keys.