Getting identity verifier error? Here is one way to work around it.

 securityBindingElement.LocalClientSettings.IdentityVerifier = new CustomVerifier();

And Here is an example of how this custom verifier could be defined. 

     class CustomVerifier : IdentityVerifier
        {
            public CustomVerifier()
                : base()
            {
            }

            public override bool CheckAccess(EndpointIdentity identity, System.IdentityModel.Policy.AuthorizationContext authContext)
            {
                return true;
            }

            public override bool TryGetIdentity(EndpointAddress reference, out EndpointIdentity identity)
            {
                identity = reference.Identity;
                return true;
            }
        }

A typical example you might need to do this is to set up a https channel with a certificate other than your machine cert.