BTW, I am following the vhost apache setup as detailed on page 42/43 of the
admin guide on port 443 (and 8443).
It turns out that this was my problem: I was using the wrong apache setup.
Once I changed this to match the stock SOGo.conf settings everything worked
fine on iPhone (iOS5.x).
Also,
Thank you -- changing the iOS 5 setting in the URL back to an @ worked. So,
the procedure on iOS is to setup the account with simple URL and user
credentials, and then go back into the Advanced settings and manually change
the second %40 to an @ afterwards.
Many thanks.
--
users@sogo.nu