Recipient address rejected: User unknown in virtual mailbox table
One of our client that is having issues emailing to their domain (@client.com) from only one external domain & mail (@supplier.com) after migrated one mail host provider to Exchange Online (O365). We can send an email to them and they get it, but they cannot respond back to the email or email us directly. I asked one of our clients to take a screenshot of the error message and this is what I get. As per the exchange mail trace, the email didn't reach to Exchange Online (O365). We have asked the mail host provider to check and not get it results.
How to handle meetings organized by deleted users?
Hi Community, there is that nearly-all-time known limitation that Exchange / Exchange Online can't change the organizer of a meeting. That is really driving me mad in real life...imagine a team assistant leaving the company after having that up meeting series for the whole team / company including meeting room reservations etc... How are you handling this limit in your real-life? Best, M.
