AutoSupport does not work with any protocol (HTTP, HTTPS or SMTP) and fails with the following errors: When using SMTP: trace [LoggingJdkHandler.java:32] [requestId=0, deviceId=1] [devmgr.dmv.SMTPMess...AutoSupport does not work with any protocol (HTTP, HTTPS or SMTP) and fails with the following errors: When using SMTP: trace [LoggingJdkHandler.java:32] [requestId=0, deviceId=1] [devmgr.dmv.SMTPMessageInvoker validateSMTPServerReply] Unexpected return code received for Handshake command From HTTP sniffer traffic performed on the firewall: When inspecting firewall sniffer trace, a connection is being made towards the AutoSupport server, some data gets send, but in the end fails.