Not receiving email and post notifications.

Hello,

I'm not sure if this is the correct forum to post this in but I thought I'd put it out there to see if anyone else is having the same issues I'm having.
Unfortunately I am not receiving any notifications (instant email notification) when I receive a PM or someone replies to a post I'm either subscribed to our posted myself.
I have checked my settings and they are set up properly.
Is there a way to submit a trouble ticket in regards to this?