Whenever I attempt to send an email to my wife's email account from my @hotmail.com email account I get the following error message:
Delivery has failed to these recipients or groups:
(my wife's email alias)
The format of the email address isn't correct. A correct address looks like this: *** Email address is removed for privacy ***. Please check the recipient's email address and try to resend the message.
Diagnostic information for administrators:
Generating server: BN6PR22MB0818.namprd22.prod.outlook.com
(my wife's email address)
Remote Server returned '550 5.1.3 STOREDRV.Submit; invalid recipient address'
Original message headers:
Received: from BN6PR22MB0818.namprd22.prod.outlook.com
([fe80::b846:e6:e12a:c4cc]) by BN6PR22MB0818.namprd22.prod.outlook.com
([fe80::b846:e6:e12a:c4cc%6]) with mapi id 15.20.0820.012; Fri, 1 Jun 2018
Content-Type: application/ms-tnef; name="winmail.dat"
From: (my @hotmail.com email address)
My wife's email address is indeed valid. I can send to it from all of my other email addresses including my @microsoft.com email address. Why is this happening?