Autoresponder lists and JV's?

When we promote out product with JV partner's, do we need to create a separate autoresponder list for each JV that promotes for us?

For ex. if JV partner John promotes our product to his list of 20,000 people and most of them just opt-in to the special offer on the landing pg. Now, they are on my autoresponder list. However, it would seem that unless I have their 2nd tier or their custom affiliate link in my autoresponder messages that they won't get credit for the sales.

Let me know your suggestions and feedback on the best system thanks.