The date field would be blank because you did not include the originating date (a Date: line) in the headers. The format for the date is in section 3.3 (pages 13 and 14) of the aforementioned RFC.

Hope that helps.

In reply to Re^3: Net::SMTP - To: and From: not appearing in headers? by atcroft
in thread Net::SMTP - To: and From: not appearing in headers? by ghenry

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