Office 365 received the message that you specified, but it wasn't delivered to the recipient ({0}). That's because an admin in your organization set up the following mail flow rule that rejected the message.
Office 365 is currently configured to use {0} url to authenticate for your organization. We currently resolved your 'Security ...
Office 365 received a 554 error from an external email server hosted by Mimecast. This is probably because the receiving ...
Office 365 received the message that you specified, but couldn't deliver it to the recipient ({0}) due to the following error: ...
Office 365 received the message that you specified, but delivery to the recipient ({0}) has been delayed. We're working on ...
Office 365 received the message that you specified, but it wasn't delivered to the recipient ({0}). That's because an admin ...
Office 365 received the message that you specified, but it wasn't delivered to the recipient ({0}). That's because an admin ...
Office 365 received the message that you specified. Unfortunately, we couldn't deliver the message to the recipient ({0}) ...
Office 365 received the message that you specified. Unfortunately, we couldn't deliver the message to the recipient ({0}) ...
Office 365 received the message that you specified. Unfortunately, we couldn't deliver the message to the recipient ({0}) ...