A knowledge base article about Locate "Message Headers" in bMail provided by the UC Berkeley IT Service Hub - Knowledge Portal
Message headers contain important information about email, including where the message came from, the IP address of the source email server, any email servers that have relayed the message, and the receiving server.
Message header properties help track email problems and SPAM. Here is how to locate message headers in bMail (Gmail):
The full headers will appear in a new window. From here you can download/print into a PDF to share with your IT consultant to analyze.