Public Folder email error, ndr returned.

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New Member
Outlook version
Outlook 2013 64 bit
Email Account
Exchange Server 2010
When sending to a mail enabled public folder calendar, we're getting the following:

Failed to process message due to a permanent exception with message The Active Directory user wasn't found.

All we're trying to do is add the public folder to a meeting request. Checked the typical MS KB's and they all point to an empty servers container but that is not the case here. Any ideas on why the calendar won't accept emails?


New Member
Outlook version
Outlook 2016 32 bit
Email Account
Exchange Server 2010
Hello guyss. I am facing the same problem when sending to a mail enabled public folder calendar. I am handling the company mail .Company is based on food grade white oils suppliers ,so there is so many types of mails are handling every day.Can anyone suggest me an idea about why the calendar won't accept emails?
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