Do you mean CC field in the external email you have received? I have got an email on v. 8.3 where CC field did not work in the SERP and the CC adressee haven't received a copy of the email.
This is not the issue of upgrade SERP. But serverip.dat in this case contains the value: 192.168.88.12:1301, so this is local IP of the server with SERP.
Anyway I don't understand what do you me...
