Issue
When submitting .eml or .msg files to MD Cloud, the files may be blocked by the CDR engine with the following error: Unsupported file type
Cause
The Deep CDR engine does not directly support EML/MSG files as standalone file types. Without additional configuration, the CDR engine cannot extract or process the contents of the email container, which results in the file being blocked as an unsupported type.
Resolution
To allow the CDR engine to successfully process EML/MSG files you will need to enable the Unarchive option as well:
- From the MD Cloud UI:
- The required behavior can also be controlled via the API rule header. The required value for the rule header is:
- unarchive (performs both unarchiving and multiscanning)
Summary
EML/MSG files are blocked because they are not directly supported by the Deep CDR engine
These files must be unarchived so their contents can be scanned and sanitized
Enabling the Unarchive option resolves the “Unsupported file type” error when submitting to MD Cloud
If Further Assistance is required, please proceed to log a support case or chatting with our support engineer.
