Hi All.

Created a Outlook.com alias.

It has been over 4 hours and any attempt to send an email to this alias comes back with an error that the mailbox does not exist.

I've tried sending from this alias, this works. If I reply to the email this also works and email goes to the alias.

If I send from my outlook.com primary address to the alias, this works.

If I send from Outlook 2013, connected to outlook.com to the alias, this then returns the error mailbox not found "smtp;550 Requested action not taken: mailbox unavailable"

I'm at a loss to what else to try