Messaging Gateway rejects inbound messages with no body with DKIM failure

Products

• Messaging Gateway

Issue/Introduction

When processing inbound, DKIM signed messages, if the message has an empty body the message fails DKIM vlidation. This only affects messages with a zero length body, not messages with normal email body content or messages with only whitespace characters in the body.

Environment

Messaging Gateway

Cause

Messaging Gateway does not use the "relaxed" DKIM algorithm when processing inbound messages with a zero length body even though the message has been signed using the "relaxed" algorithm.

Resolution

This issue has been addressed with the SMG 10.6.4 release.