Presence without VPN. Mac Messenger 7 + OCS 2007. Sign in FAILS.
“Sign in failed because the password is incorrect or the sign-in name does not exist”
SOLVED…if Mac Office 2008 was preinstalled. Found you may need to manually remove 7.0.0 version before 7.2.0 (OCS) version will install correctly.
Also need to install a certificate (from your corp) in Microsoft Entourage (Mac Outlook)
(tried to post a solution on Mactopia OCS forum sign up is not working. Link me=)