I have Groupwise 8 server installed in OES2 Linux. The email works fine in all platforms but the Messenger has this error "Unable to establish secured connection to the server" when try to login in Mac and Linux. When I'm trying to enable SSL, I could no longer login to messenger using Windows client. I also tried to enable the IMAP in POA but it just worsen the problem. I could no longer receive emails in blackberry.