I have several SMTP servers on various networks around the world, and all of them are getting mail through ESTMPS - extended SMTP using TLS.
So the email coming from GMail, MSN, Yahoo, as well MOST of other mail servers, including Exchange servers, Rackspace Email etc, are getting there over ESMTPS. BUT: so-called "secure" Message Labs is doing it plain text. For example (also they use DNS based in US only including the EU):
Received: from mail1.bemta7.messagelabs.com (mail1.bemta7.messagelabs.com [22.214.171.124]) by mail-01 (Postfix) with ESMTP id 6904B757A for ; Mon, 15 Oct 2012 10:59:53 -0700 (PDT)
Another example is gmail:
Received: from mail-pa0-f44.google.com (mail-pa0-f44.google.com [126.96.36.199]) by mail-01 (Postfix) with ESMTPS id E8822161A for ; Sat, 20 Oct 2012 05:11:38 -0700 (PDT)
Does anyone see any reason why it's like this? I use a self-signed certificate on my postfix mail servers, and all I want is to get mail over TLS.