I've activated Kerberos on my environment and it seems to be working fine for accessing the website using it's dns name:
http://myintranet.mycompany.com
I cannot however access sites anymore using the server name http://server01:5011
My SPNs are setup as :
- http/server01:5011
- http/server01.mycompany.com:5011
- myintranet.mycompany.com