Client certificate support

Hi,

I've just came accross the Zextras website, and all looks very promising. For me especcially the Zxmobile is interesting. I will install a trial soon.
However I was wondering if there is support for authentication using client certificates? I couldn't find anything about this.
I also administer an Exchange environment. Client certificates on mobile devices works very nice and increases security (which always is a good thing offcourse). Also, when users change their passwords, the device keeps syncing without modifications.

I've found this link about Zimbra: Gautam-Notes - Zimbra :: Wiki
But will this also help enabling certificate auth for zxmobile?

Thanks in advance.

Hugo