The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
This document describes an issue with the Cisco Email Security Appliance (ESA) when email attachment information does not appear in the message tracking and describes some possible solutions to the problem.
You receive an email with a valid attachment. If there is no body scanner, or no attachment scanning message filters or content filters are in place, the email attachment does not appear in the message tracking. In the message tracking, you see Attachments: N/A:
If the attachment information does not appear in the message tracking, it does not indicate that the ESA has dropped the attachment. The attachment is still visible, but the appliance does not have the necessary scanners for attempts to scan the email body in order to identify the attachment.
This problem occurs because the content scanning engine does not actively scan attachments. Complete these steps in order to enable the message tracking to display the attachment information:
This section describes some possible filter options. You can use any of the filters that are outlined by the boxes in the next image, as they require the appliance to perform some form of attachment or body scanning:
Once you create the filter(s), the message tracking should indicate the email attachments, as shown: