Andrew Pitts (Ph.D., McMaster Divinity College) is the guest for two hours on Nick Peter’s Deeper Waters podcast. The host and guest are primarily reacting against Bart Ehrman’s book Forged: Writing in the Name of God–Why the Bible’s Authors Are Not Who We Think They Are.
Pitts says that he accepts Paul as author of all 13 of the New Testament letters ascribed to him, and does so not based on a confessional commitment but based on the sociolinguistic and other relevant evidence. For the same set of reasons, he also accepts that Peter wrote both of the letters which bear his name. Pitts just does not believe that the arguments against traditionally-ascribed authorship are strong.
Related link: Clifford Kvidahl blog interviews Andrew Pitts