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RE: MIME boundary question

1995-02-09 13:41:57
One of  my co-workers here pointed out RFC-1521 which has an example using two 
boundaries "unique-boundary-1" and "unique-boundary-2".

Doug Strauss
Microsoft System Testing

From:   Steve Dorner
Sent:   Thursday, February 09, 1995 8:02AM
To:     ietf-822(_at_)dimacs(_dot_)rutgers(_dot_)edu
Subject:        MIME boundary question

Consider the following fragment:

multipart/mixed; boundary="outer"

multipart/mixed; boundary="outer-inner"




I have a vendor claiming that this is illegal because the "outer" appears
in the boundary "outer-inner", and thus violates the need for the
boundaries to be unique.  Their claim is in fact that "outer" must appear
NOWHERE in the body--not merely that "--outer<CRLF>" must not appear in the

I think this is absolutely preposterous.  I think that the uniqueness
requirement means that the string "--outer<CRLF>" must not appear as body
contents, but that "--outer-inner<CRLF>" is perfectly OK (so far as the
outer multipart goes), and that the fragment above is therefore perfectly

What say you all?  Have I misread the RFC?  Has the other vendor?  Does the
RFC need to be clarified?

Steve Dorner, Qualcomm Incorporated.  "Oog make mission statement."

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