You must config a virtual ifolder-Server , which has an other
IP-Adress.
This Server must bei resolved by an DNS-Server such bind.
eg: OES Server names OESTEST , IP: 53.143.62.72
OES iFolder Server names OESIFOLDER , IP: 53.143.62.74 ( this IP
must
NOT exist real )

You must be able to resolv the Hostname and IP-Adress revers, e.g.:
nslookup OESIFOLDER must show: 53.143.62.74 and nslookup 53.143.62.74
must
show: OESIFOLDER.Domain

Fill out the relevant things in Yast and it should work.

kind regards

Thomas Müller