Office 365 received the message you specified. Unfortunately, the message couldn't be delivered because the recipient's email server returned an error. Office 365 will keep trying to deliver it for up to 48 hours.
Please see your admin if you need additional details.
Office 365 received the message that you specified. Unfortunately, we haven't been able to deliver it to the recipient ({0}) ...
Office 365 received the message you specified but couldn't deliver it to the recipient ({0}). This happened because an email ...
Office 365 received the message you specified. Unfortunately, it has been delayed. We're working on delivering it. Please ...
Office 365 received the message you specified. Unfortunately, the delivery to the recipient failed because their domain isn't ...
Office 365 received the message you specified. Unfortunately, the message couldn't be delivered because the recipient's email ...
Office 365 received the message you specified. Unfortunately, the message couldn't be delivered because the recipient's email ...
Office 365 received the message you specified. Unfortunately, the message couldn't be delivered because we couldn't connect ...
Office 365 received the message you specified. Unfortunately, the message couldn't be delivered because we couldn't connect ...
Office 365 received the message you specified. Unfortunately, the message couldn't be delivered because we couldn't connect ...