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How does Outlook 2003 handle the MIME type message/rfc822?
Hello,
could anyone tell me excactly how Microsoft Outlook 2003 handles the MIME mediatype "message/rfc822"? The reason I am asking is because I am currently working on a gateway to convert mail from a custom format to the rfc2822/rfc2045-2049 specification(s). In this custom format, it is entirely possible for a mail message to have whole mail messages attached. It seemed like this would be easily solved by using the message/rfc822-type to include the entire mail, but this turned out to be a problem if the attatched mail was itself a MIME multipart-message. In that case, Outlook simply refuses to list the incoming mail message at all. Now this was frustrating as, according to the spec, a message/rfc822-object is allowed to be a "full blown" MIME-message despite what the name might suggest. To make sure there was nothing wrong with the generated mail message, I also tried importing it into several other clients with success, so it seems like this problem is Outlook-related. An example of such a message is included below. I would appreciate any help or suggestions with this, as I don't really know how to proceed. #Start mail-example (headers removed/boundaries renamed to slightly enhance readability): Priority: normal To: From: Subject: Fwd: Attached mail MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="outer_boundary" This is a multi-part message in MIME format. --outer_boundary Content-Type: text/plain Content-Transfer-Encoding: 7bit Bp forwarded mail --outer_boundary Content-Type: message/rfc822 Content-Transfer-Encoding: 7bit To: From: Subject: Attached mail Content-Type: multipart/mixed; boundary="inner_boundary" MIME-Version: 1.0 This is a multi-part message in MIME format. --inner_boundary Content-Type: text/plain Content-Transfer-Encoding: 7bit Bodypart 1, attached mail --inner_boundary Content-Type: text/plain Content-Disposition: inline Content-Transfer-Encoding: 7bit Bodypart 2, attached mail --inner_boundary-- --outer_boundary-- #End mail-example |
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