Guidance on the best way to visually confirm DKIM signing on outbound messages

Products

• Messaging Gateway

Issue/Introduction

You are seeking  guidance on the best way to visually confirm DKIM signing on outbound messages from the Control Center web UI or logs. This might help, for example, in confirming which signing key or selector is being used.

Resolution

The DKIM signing is based on the associated domain that it is configured under in Protocols > Domains.

When a local sender sends an outbound message through the Messaging Gateway, their email domain is matched to the Protocols > Domains list, and configurations for the matched domain take effect. The signing key is the one selected within the Protocols > Domains configuration for the sender's domain, for each message.

Since this configuration is an all-or-nothing on/off style of configuration, there are no other specific indications for the configuration in the Control Center or logging.

You can review the headers from an outbound message that was received by the recipient to further verify the DKIM signing, if needed.