When you send a message with a MIME attachment from an Exchange client and
have configured an Internet recipient to "Always send to this recipient as
RTF", and that recipient uses a POP3 client, the recipient will not receive
the attachment.
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The MIME-encoded attachment is still present but is not accessible by the
POP3 client (depending on the receiving client). This problem only happens
when sending an attachment as MIME.
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There are two ways to work around this problem:
- Disable the option "Always send to this recipient as RTF" when sending
an attachment to an Internet recipient using a POP3 client.
- Do not include an attachment in an RTF message.
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Microsoft has confirmed this to be a problem in Microsoft Exchange Server
5.5. We are researching this problem and will post new information here in
the Microsoft Knowledge Base as it becomes available.
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Most POP3 clients do not understand Rich Text Format (RTF) used by
Microsoft transport-neutral encapsulation format (TNEF). Consequently, the
sender must turn off the option "Always send to this recipient as RTF", in
order for the POP3 client to see the attachments.
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Retired KB Content DisclaimerThis article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
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