Is it necessary to run DNS on my RaQ? Can I shutdown DNS service? For security reasons, and my lack of experience in managing DNS, I would prefer to find a DNS service that will give me a web control panel to manage records for my domains and any client domains on my RaQ.

Is this possible, and if so can someone recommend a DNS service? The service needs to allow me to update A and MX records (am I missing anything?) for all domains.

nopes.. you dun need to run DNS on your Raq.. where is ur raq hosted? why not ask your host to manage your dns for you?