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Chapter 12. Servers and Services

A DHCP client hook example added for DDNS for Microsoft Azure cloud

An example of the DHCP client hook for Dynamic DNS (DDNS) for Microsoft Azure cloud has been added to the dhcp package. The administrator can now easily enable this hook, and register Red Hat Enterprise Linux clients with a DDNS server. (BZ#1321945)

postfix now supports user-controlled configuration of TLS

With this update, postfix offers configuration options for more precise control of the Transport Layer Security (TLS) protocol version. For example, you can now disable TLS v1.1 while having TLS v1.2 enabled. To do this, add the following line to the file:
smtpd_tls_mandatory_protocols = !TLSv1.1