On 20100816 at 06:26 AM Julian Junge typed...
> option a.) When a mail is
send to a closed ticket, the mail bounces, and the sender
receives a notification that his case is closed and he please
removes the ticket number from the subject and
sends that mail again.
You could create a reply directing the user what he/she needs to
do. In this case ADMIN | QUEUE | Select Queue then click CHANGE
button | Modify Follow-Up Option to reject.
Create/Modify appropriate
Auto-Queue response to respond with the appropriate verbiage.
On 20100816 at 06:26 AM Julian Junge typed...
>option b.) The mail does not
bounce but a new case is created and OTRS replaces the ticket
number in the subject.
Configure the Follow-up
option for the queue - ADMIN | QUEUE | Select Queue then click
CHANGE button | Modify Follow-Up Option to New Ticket
Create/Modify appropriate
Auto-Response<-->Queue responder to respond with a message
indicating the ticket has been opened under a new ticket.
I think there are default auto-responses available when you
initially configure these options, but customizing the
auto-responder is IMO a highly recommended step.