Updated : Jul 11, 2013 in Linux

Configuring Zimbra to deliver mail using SSL/TLS

ssh root@server.mydomain.com
su - zimbra
zmlocalconfig -e postfix_smtp_tls_security_level=may
zmcontrol restart

Sent an email to normal postfix server:
Check the headers of received email:
Received: from server.mydomain.com (static. [])
by mail.mydomain.com (Postfix) with ESMTPS id E457F3E09E for ;
Fri, 19 Apr 2013 23:35:31 +0200 (CEST)

Sent to GMAIL server:
Received: from server.mydomain.com (static. [])
by mx.google.com with ESMTPS id b4si25422716eef.188.2013.
(version=TLSv1.2 cipher=ECDHE-RSA-RC4-SHA bits=128/128);

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