Never under any circumstance use a noreply email address. Besides being totally less personable it frustrates your readers that want or need to contact you with a question.
Could you imagine going into a store and not having an easy way to ask a question about a product? Why in the world would you want to do that to one of your list subscribers? Hopefully you would not.
Make it easy for your subscribers to contact you and ask questions. You want to build a trusted relationship with your list, not a robotic one.
Also keep in mind you want your readers to add you to their address book. Noreply emails rarely get added. I know Steve@, customerservice@, newsletter@, but who the heck is noreply@.
Noreply@ tells your readers that you are not interested in them and only want to send them emails selling them stuff. Just say no to firstname.lastname@example.org