The messages I receive that have the line ‘ Content-Type: text:plain; charset="utf-8” ‘ are not readable, but it is human readable if the "utf-8" bit is capitalized or if there are no quotation marks. Is this a opensmtpd bug?
section 2 of RFC 2047 makes it sound like capitalization should not be relevant. https://www.rfc-editor.org/rfc/rfc2047#section-2 <https://www.rfc-editor.org/rfc/rfc2047#section-2>
