The Email App on my Droid does not seem to be able to connect to our IMAP server with our new certificate since we installed a new certificate, which for the first time is a chained certificate. It says "Cannot connect safely to server". Thunderbird and other desktop apps are connecting with no problem. This is a VERY serious problem, as more and more servers are likely to be using chained certificates. I just filed a bug report for the Email App: Bug 10985 If you've experienced this problem, or if you just think it's a high priority fix so that you don't experience it when your certificates are updated, then please star this bug report.