We should only get follow up notification emails for replies that come in to tickets that we own, however, we're getting them for others (tickets that we've not even touched). See https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketHistory&TicketID=2483572 for example.
Version: unspecified
Severity: enhancement
(In reply to comment #1)
Isn't this just a duplicate of bug 8662?
I don't know if it is or not, as I don't know if it is going to "all queue agents" as 8662 says.
This specific queue (info-en::Copyvio) was configured so that "Ticket lock after a follow up:" was disabled, so it makes sense that the system send a notification to all volunteers who have this queue in "My queues". The option is enabled now, so it should be fixed. Please re-open if not.