It looks like version 1.1.14 that is installed on the server.
The Cc is not a problem, I can live with that but it is the addresses I don’t want to show (Bcc) which appear in the To: header when the email arrives at a destination.
The outgoing string from my form looks as it should;-
Header to: email@example.com
Header Cc: firstname.lastname@example.org
I guess I’ll just have to keep playing with it or maybe contact the server support.
Thanks for your advice.