I posted my specific problem in this thread:
http://www.zimbra.com/forums/install...ty-pkcs12.html
... but I think that overall this seems to be an issue. I don't think the documentation of this is terribly clear. Of course, it could just be me not getting it, but I see a lot of people here in forums asking very similar questions and having issues. If someone from Zimbra could help a little bit on this particular issue, I think a lot of us would appreciate it a lot. At least I know I would.
Thanks in advance.