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We currently have a SharePoint 2010 with a list that can receive e-mails from anyone that has a domain account/e-mail. However, we started to move some users to office 365, and even though there is a federated server, the user is not able to send the e-mail to the SharePoint list.

The question is: Is it possible to only allow the company users (including office 365 users) to send e-mails to the list but block everyone else?

Thank You for reading.

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AFAIK email enabled lists are not possible with O365.

There are 3rd party products available with that features, see

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Thank you for your quick reply, but I was wondering about sending the e-mail to a local instance of SharePoint. The SharePoint is not on Office 365 yet. – MicroSumol Mar 25 '13 at 15:47
I am afraid this is not possible with SharePoint. You could add an exchange rule to drop mails from other senders than O365. – Max Melcher Mar 25 '13 at 16:12

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