Thanks Alex!. ESX load balance was the solution for us. Environment: Multiple Dell M1000e blades chassis with multiple Dell MIO aggregate modules in each chassis. Each Dell MIO aggregate module having two 10GB interfaces in a port-channel running to...

I had very similar issue. Certificate validation failure message/error and "The SSL transport received a Secure Channel Failure.  May be a result of a unsupported crypto configuration on the Secure Gateway." in DART log. ASA: 9.4.(2)6 AC: 4.0.0.0.0...