<li>How current MIME parser implementations treat (non-MIME) Header Fields, which are not the outer most MIME entity and not wrapped into a MIME entity of media type “message”, and how such messages are rendered to the user. <br><br><ahref="#I-D.autocrypt-lamps-protected-headers"class="xref">[I-D.autocrypt-lamps-protected-headers]</a> provides some examples for testing this.</li>
<li>How current MIME parser implementations treat non-MIME Header Fields, which are not part of the outer most MIME entity and not wrapped into a MIME entity of media type “message”, and how such messages are rendered to the user. <br><br><ahref="#I-D.autocrypt-lamps-protected-headers"class="xref">[I-D.autocrypt-lamps-protected-headers]</a> provides some examples for testing this.</li>
<li>MIME-conformance, i.e. whether or not this option is (fully) MIME-conformant {RFC2045}} ff., in particular also Section 5.1. of <ahref="#RFC2046"class="xref">[RFC2046]</a> on “Multipart Media Type). In the following an excerpt of paragraphs that may be relevant in this context:</li>