Final answer:
A white list is easier to manage for a production mail server as it allows only approved senders, reducing the risk of spam.
Step-by-step explanation:
The type of list that is easier to manage for a production mail server is a white list. A white list is a list of approved email addresses or domains that are allowed to send emails to the server. By using a white list, only approved senders can deliver emails to the server, reducing the risk of spam and unauthorized emails.
On the other hand, a black list is more difficult to manage for a production mail server. A black list is a list of blocked email addresses or domains, often used to filter out spam or malicious emails. However, maintaining a black list requires continuous updates to include new spam sources and keeping track of false positives.