Let's Encrypt & iTunes podcasts
Update (April 2018): Apple appear to have fixed this in late 2016 - see this article from feed.press. Two podcasts I run have disappeared from the iTunes podcast store. After a few baffling evenings spent debugging a rather frustrating “Can’t read feed” error, it turns out the problem is fairly simple. The iTunes Store’s support for SSL is a bit disappointing, to say the least. To get a podcast into the iTunes store, you need to make sure your SSL set-up is supported by Java 6.