Re: Call Home email to TG on Nexus 5596 version 5.2(1)N1(1b) not
Craig, we had a similar issue on our Nexus switches. We had both http and email set for the transport type. We had to blow away the entire SCH transport config and add only email as the transport, since the switch uses email to get to the transport gateway.
We found the failure by running: "debug call home events" on the Nexus, then sent "callhome test inventory" from the switch. Watch the output for about a minute and you should see the failure. Hope this helps.