1) If we register a domain that is already blocked by a DPML, will the requesting registrar get charged the override fees + registration fees?
Correct--The override fee is the same cost as the sunrise participation fee, so you can think of it as an everlasting sunrise for SMD holders.
2) Is there any notification that an override fee is going to be charged?
Registrars receive the amount of the override fee in the domain:check command.
If any registrar submits a valid SMD file at any time (during sunrise or after), and that name is blocked by a DPML, the registrar will be notified that an override fee will occur, and that registrar has to accept the fee before the override can occur (domain registration is completed). If the registrar accepts the fee and proceeds with a registration, they will be charged an override fee. but they will have a warning.
3) Are override fees charged during a sunrise registration? During Sunrise, registrars are already obliged to submit a SMD file so if someone has already blocked a domain through a DPML, will they be charged an override fee along with the sunrise participation fee?
No override fee occurs during sunrise. If you have a valid SMD and use it during the sunrise phase you only pay the Sunrise Participation Fee (which happens to be the same amount as the override fee).
4) What are the restore fees of a DPML block ? Does it include a 1-year renewal ?
If the block is restored during the regular lifecycle of the Restore-Grace-Period, the fee is $40 plus a one-year renewal, just like a domain name. If the block is not restored inside the RGP, regular prices apply for a "new" block.
5) You say we should warn our client if he request a DPML on a premium name (the block will not be valid). Will Donuts provide a list of premium names ?
Yes, Donuts will provide to Registrars a list of all premium names as soon as those lists are complete. As a guideline, generally, the terms on the premium list will be generic terms. For example we will not put "BMW" on the premium list.