This article applies to:
- Trustwave MailMarshal (SEG)
Question:
- Can image fingerprinting be used to block spam?
- Can I block image spam using the "valid fingerprints" feature?
Reply:
No, it is not practical to block image spam using the "valid fingerprints" feature in MailMarshal SMTP. This feature only identifies individual files.
To learn about MailMarshal best practices for blocking spam, including image based spam, please see the following Trustwave Knowledgebase article: