This was happening all weekend. I DC'd at least a 1/2 dozen times and I think my buddy DC'd 20+ yesterday alone.
It's been horrible since the last patch dropped.
I DC'd and the message said I'd been removed from the server for spamming mail.... Forget the fact that not only had I not sent a mail I hadn't even typed one word!
the game has been almost unplayable over the last 10 days. Constant crashing out of game, ping all over the map spiking from 60 to 999 randomly, skills failing to fire - just playing the game is the hardest trial ZOS has put in ESO
I'm on PC NA (no Steam) and have had no disconnects recently. I have gotten 'You are already logged on to this account' when logging in a couple times over the past couple days which is a bit unusual. So sorry that others seem to be having problems.