Hello,
Our exchange server is hosted through Office 365.
I was attempting to add an "other email address" to one of our users (we'll call him "User 1") when I encountered the following error:
The proxy address "smtp:sales@[domain].com" is already being used by the proxy addresses or LegacyExchangeDN of "[User 2]". Please choose another proxy address. (The "MailUniversalDistributionGroup" with display name "[User 2]" is already setup and using the same address.)
"User 2" doesn't exist anymore though... Or rather, that user doesn't appear in my list of "Active Users" on my Office 365 Admin dashboard.
So... how do I overcome this issue?
- Edited by thefanw00t 9 hours 55 minutes ago