Next, what is Daniel doing, specifically, that's so great? We don't know that either. It's so vague that John will definitely have to write back for more information.
Last, what is the purpose of this email? Does Skip simply want to have an idle chat about Daniel, or is there some more specific goal here? There's no sense of purpose to this message, so it's a bit confusing.
Good Example
Hi John,
I wanted to write you a quick note about Daniel Kedar, who's working in your department. In recent weeks, he's helped the IT department through several pressing deadlines on his own time.
We've got a tough upgrade project due to run over the next three months, and his knowledge and skills would prove invaluable. Could we please have his help with this work?
I'd appreciate speaking with you about this. When is it best to call you to discuss this further?
Best wishes,
Skip
This second message is much clearer, because the reader has the information he needs to take action.