[zimbra@devzimbra ~]$ zmcontrol -v
Release 7.2.0_GA_2669.RHEL6_64_20120410002025 CentOS6_64 FOSS edition.
[zimbra@devzimbra ~]$ java -version
java version "1.6.0_31"
Java(TM) SE Runtime Environment (build 1.6.0_31-b04)
Java HotSpot(TM) 64-Bit Server VM (build 20.6-b01, mixed mode)

HTTP ERROR 500
Problem accessing /service/extension/samlreceiver. Reason:

    Unparseable date: "2018-12-13T09:48:09Z"