I have installing Nintex 2013 enterprise to our clients SharePoint 2013 server. I followed the install guide that comes with Nintex. We built out a test approval workflow that has the task enabled to do lazy approval. The email is emailed correctly and has the lazy approval tag applied to the subject line with no problems. But when we try to reply back we get this:
We send out emails via using Exchange as well.
Has anyone came across this or can help on setting this up as this is one of the main reason client purchased Nintex. Any information would be greatly appreciated.