Hi, I want to delegate rights for user to create mailbox'es in exchange 2010, to witch groups I have to add user? I need to deny delegation for mailbox creation permissions. thanks Naujas

Hi naujas, You need to delegate the Recipient Management role for that user. For more information about roles, refer to the topic below, Understanding Role Based Access Control Best regards, Andrey. MCTS: Microsoft Exchange Server 2007/2010 | MCSA