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    • https://kb.netapp.com/on-prem/E-Series/Management-Apps-KBs/AutoSupport_not_working_for_HTTP_HTTPS_and_SMTP
      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.