Anytime a specific user sends an email too any other person, that person receives two copies of the email. What conditions could allow this to happen?
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This can happen if there are two copies of the OUTLOOK.EXE process running on the machine. Ending one of the processes will stop duplicate mail from being sent out. |
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Sounds like you already solved this but for future occurrences, it might also help to see headers. |
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Outlook profiles crap out sometimes and give wacky results. Just a general Outlook/Exchange troubleshooting method. When having issues troubleshoot them in Outlook, try to reproduce them in OWA. |
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