I'm running Windows 2003 SBS and I'm able to connect a Black Jack II running Windows Mobile 6.0 but I can't connect an iPhone. I'm able to access OWA from the iPhone via it's browser with no errors nor any warnings, however, when settings up Exchange access on the iPhone I'm able to get through the Wizard with only a warning. That being a warning in regards to unable to validate SSL cert, however, I see that on other iPhone and servers too. The wizard completes, however, when trying to connect via the mail client on the iPhone I get a 'cannot connect to server' error. Any suggestions?