Message
The recommended <itunes:email>
element is missing
Explanation
If an itunes:email element is not included, iTunes will send automated messages to the email associated with the iTunes Music Store account through which the podcast was submitted.
Solution
Consider including the itunes:owner element, along with a valid email address, immediately under the channel element.
An example follows:
<itunes:owner> <itunes:name>Your Name</itunes:name> <itunes:email>your-email@example.com</itunes:email> </itunes:owner>
Not clear? Disagree?
You might be able to find help in one of these fine resources.