Currently our helpdesk appears to be replying to all instead of replying to sender when creating an incident.

For example "someone" sent an email to our support desk AND to a number of other external recipients. All of the people in the "To" received the acknowledgement of the incident, which of course had nothing to do with them and resulted in more heartache. It has happened on a number of occasions.

Can this be set to reply to the sender only?

Ant.