I sent an email send this afternoon and the link isn't working. This seems to be the same problem. I tested it then sent it. However it looks like my original link was directly to my website page and now it has the CNAME link.dfafarmsupplies.com.
Here is my original file. https://dfafarmservices.dfamilk.com/main.aspx#584191839
Now it seems more than 1,000 people got an email without a link that works?