i tried to connect to ifolder form the internet but i get -105 error

here the configuration

pix firewall with nat to ichain in dmz (eg 195.x.x.x to 172.x.x.x)

ichain has an excelarator wich says that all incoming ifolde.dns name
should got to internal ifolder service (eg 172.x.x.x to 10.x.x.x)

it works for the webside but the client could not connect.

dns is configured for both inside and outside and works
nat is static exclusive for ifolder (or ichain ifolder accelarator)

could this be an certificate issue or just a problem with the proxy

ichain is in dmz and inside with no routing enabled

if any one has an idea please help me