TLS between Zimbra and Exchange

[vince]

How would we go about configuring TLS communication between Zimbra and Exchange 2003? I want mail being delivered to the Zimbra server from Exchange 2003 to be encrypted/secure for a specific domain.

Thanks

[phoenix]

How about you enable "TLS authentication only" in the Zimbra admin UI, I'm not sure about the Exchange configuration you'll have to check the config yourself.