I'm the site admin and the postfix admin for WordPress that sends out automatic messages to subscribers at our email domain. Ever since updating Subscribe2 (with WordPress 3.5.1) over the weekend the following happened:
* I had to activate the plugin from within each blog (I'm using multisite)
* The emails DO NOT go out (Postfix doesn't see them at all)
* Test emails using the "Send Email" features DOES work (Postfix sees them, they get delivered)
I set up a blog specifically to test for this and that is the behaviour I'm seeing.
Any other debugging I can do? Any ideas?