Server to Server encryption (SMTPS)

Server to Server encryption (SMTPS)

Hello,

i currently use the free LITE Version of Zoho Mail.

When i send or receive e-mails, the SMPT server does not use transport encryption with the remote server.

Here the relevant headers, sending:

  1. Received: from sender1.zohomail.com ([72.5.230.100])
  2.     by mail.tu-berlin.de (exim-4.72/mailfrontend-5) with esmtp
  3.     for <echo@tu-berlin.de>
  4.     id 1UoHWH-0001kV-7N; Sun, 16 Jun 2013 20:17:42 +0200

and receiving:

  1. Received: from bouncing.tu-berlin.de (bouncing.tu-berlin.de [130.149.7.34]) by mx.zohomail.com
  2.     with SMTP id 1371406665082318.2230911801985; Sun, 16 Jun 2013 11:17:45 -0700 (PDT)

The other server supports SMTPS/ESMTPS, i tested this with another e-mail server that also supports it.

So my questions are, is it possible to enable server to server encryption? And is this available in the Standard paid version of Zoho Mail?

Thanks,
Yannis