At 00:07 -0500 on 01/18/2011, zMan wrote about Re: EMail attachments
stopped working:
No, DATA is the end of the envelope. SMTP doesn't know from MIME: it
just knows envelope and body. MIME is content only, interpreted by the
MUA, not the MTA. MIME is a red herring here.
What I was saying is that as soon as the SMTP Server sees a DATA
command, it treats the rest of what it is passed as the MESSAGE BODY.
Thus there are a few headers that were listed after the DATA command
which would not be interpreted by the Server as Headers. You are also
incorrect about the MTA not interpreting the MIME content in the
Message Body. It does look at it - for example converting a 8bit part
to QP or BASE64 if it has to hand the message off to another server
that does not support 8BITMIME.
Ignoring the possible misplacement of the DATA, the missing MIME
separators is IMO a valid problem. The use of Content-Disposition:
attachment; TRIGGERS the need for them. They are only optional with a
Text/* Message Body. As soon as you say the message body contains an
attachment (even in the absence of a message) you need them.
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