Managed service
Q: "Can dmarcian act as a managed service?"
A: Not really. We do have deployment services available for purchase*, and they can help you through a lot of initial configuration and process, but longer term the management of your DNS record entries, and the vendor relationship and management required MUST be performed by the domain owner.
* if you have purchased use of dmarcian via a reseller or partner, they may have their own offerings to help you; contact them. For professional services available from dmarcian directly, please reach out to sales@dmarcian.com.