Cisco Cisco Email Security Appliance C160 Mode D'Emploi

The recipient is not a valid Office 365 user or the recipient does not belong to the Office 365 domain 
account configured on your appliance.

The message containing the attachment is no longer available in the mailbox, for example, the end 
user deleted the message.

There was a connectivity issue between your appliance and Office 365 services when the appliance 
was trying to perform the configured remedial action.

Click on a SHA-256 hash to view the related messages in Message Tracking. 

To display the details of mailbox remediation in message tracking, 

Message Tracking must be enabled. See 

Office 365 mailbox settings (System Administration > Mailbox Settings) must be configured. See 

.

Mailbox remedial action (Security Services > Mailbox Auto Remediation) must be configured. 
See 

.

For more information about the data displayed, see 

.

While trying to check the connection between your appliance and Office 365 services on the 

Mailbox Settings page (System Administration > Mailbox Settings), you receive an error message: 

Connection Unsuccessful

. 

Depending on the response from the server, do one of the following: