Unfortunately, AWAL doesn’t deliver podcasts. This is a very different type of service and as iTunes themselves don’t host the content it is not something that can be delivered by a distributor. There are third-party services that offer this.
For more information on how to deliver a podcast, you should check out the iTunes help section on the subject. Here you can also search for the aforementioned third-party podcast hosting services. Not all services are Apple certified so to get on iTunes it’s important to ensure you use an Apple certified partner.