Good Morning MattyRob,
I am having a similar problem this morning as well. I am very new to the WordPress world and I have recently updated to WP 3.4.
When I send out a message, it comes back with a webpage stating: Are you sure you want to do this?, but no buttons to acknowledge my request.
My setting are:
Restrict the number of recipients per email to (0 for unlimited): 1
Send Email From: only have three options: Post Author or British Columbia Football Officials Association or adminbcfoa
Sorry, if this makes no sense.
Any help would be appreciated. Craig