MIME conversion error
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If you receive the following error message when trying to send a message from Outlook, it might mean that GSSMO's message conversion process is corrupted and needs repair:
This email message was not sent because we were unable to convert the message into Internet format (MIME). Removing attachments or removing forwarded text from the message may enable you to send the message.
See Troubleshoot issues with messages for details on how to fix this issue.