I am stuck on a problem with outlook sending to wrong internal mail address.
Mail environment is Office 365/Exchange online
On a shared mailbox I deleted a mail alias and added the same mail alias to another user's mailbox.
shared mailbox: firstname.lastname@example.org
User mailbox: email@example.com
shared mailbox: firstname.lastname@example.org
User mailbox: renamed from email@example.com to firstname.lastname@example.org
The problem is that when I send an email from outlook 2016 to email@example.com it is delivered to firstname.lastname@example.org
But if I send send the email from webmail it is delivered correctly to email@example.com
And email from my colleague end up in the same wrong mailbox, so the problem is not local to my outlook 2016.
I am thinking that there is something in outlook that is not updating correctly.