User could not send from another email address belong to himself

01 Aug

When user mailbox have multi email addresses, for example and, primary email address is And he wants to send a mail with mail address from Then he will get a NDR that he does not have permission to send as

This is by designed. Do not try to change the behaved.

To help user get what he want, here is a workaround.

1 create a new mailbox for him.

2 assign full access and send as privilege on the new mailbox for him

3 change primary email address on the new mailbox to at the meanwhile change his own email address to

4 ask helpdesk engineer to add the new mailbox opened in his mailbox account from outlook account settings.


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