HTTPS Messaging with Client Side Certificate fails with IIS error 403

Symptoms We have a Win2k3/Win2k8 Server. We are trying to send HTTPS messages to this Win2k3 Server. The Server Requires Client Side Certificates. The IIS log shows error 403.7 – Client Side Certs Reqd. Also if you enable deadlettering on the messages the messages end up in deadletter queue with HTTP error 403. Cause If a…

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