It looks like the recipient isn't a valid email address in your organization's address book. Check the email address for the Recipient: {Recipient}, and run the checks again.
If you entered the correct email address, you need to either create a mailbox for that user or create an external email address for the recipient.
- In the Office 365 Admin center, go to the Active users page.
- Choose Add a user.
- Provide the requested information, and a mailbox is created automatically for the new user.
It looks like the IP address that you typed isn't the right one for http://www.{0}. If you continue, people might not be ...
It looks like the recipient ({0}) isn't a valid email address in your Office 365 address book, but it exists in your organization's ...
It looks like the recipient isn't a valid email address in your Office 365 address book, but it exists in your organization's ...
It looks like the recipient isn't a valid email address in your Office 365 address book, but it exists in your organization's ...
It looks like the recipient isn't a valid email address in your organization's address book. Check the email address for ...
It looks like the recipient isn't a valid email address in your organization's address book. Check the email address spelling ...
It looks like the recipient isn't a valid email address in your organization's address book. Please see your admin if you ...
It looks like the sender isn't a valid email address in your organization's address book. Check the email address for the ...
It looks like the sender isn't a valid email address in your organization's address book. Please see your admin if you need ...