I've been using phplist for a few years now and recently I've had a few email addresses that I use unsubscribed automatically without my authorization. Another member reported being unsubscribed the same way.
I was just minding my business and one day one of my email accounts on the list received a message saying Goodbye from our Newsletter, sorry to see you go.
How can I prevent this from happening. I could be losing valuable clients by the day and only just finding out about it.
I'm on version 2.10.12
Is this a known bug? How can it be prevented?