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yum commands fail against Red Hat Update Infrastructure 2.0 Content Distribution Server (CDS) in Red Hat Enterprise Linux 5 with error 'M2Crypto.SSL.SSLError: tlsv1 alert unknown ca'

Solution Verified - Updated 2014-05-10T13:28:09+00:00 -

Issue

yum repolist on a Red Hat Enterprise Linux 5 Red Hat Update Infrastructure 2.0 client produces a large traceback ending with:

M2Crypto.SSL.SSLError: tlsv1 alert unknown ca

Environment

Red Hat Update Infrastructure (RHUI) 2.0
Red Hat Enterprise Linux (RHEL) 5 update 8

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