I'm not sure if I'm right in here, so please tell me if not.....

I wonder if someone was able to connect his/her iPhone via iMap and SSL to a GW8. Using iMap on a desktop is working fine (with thunderbird) but I can't get the iPhone to connect to the server. Is there something like a trick to get it to work?
We're using GW8 on a NW6SP7 without the mobile stuff. Is that probably the cause?

Any hint is welcome

Kind regards