@jdunphy Thank you very much for the information. I tested Carbonio as soon as it came out, but there were a few problems. That's why I went back t...

@arman You are very kind. Thank you so much. I am waiting for information from you.

@arman The problem has been fixed in the commercial version of zimbra. But it has not yet been fixed by Zextras. The latest released version is as ...

@arman Unfortunately I'm not. Is there any solution? It works with self-signed SSL. But it doesn't work with any other certificate authority.