This article covers the SPF and DKIM authentication processes for ZixGateway SMB and how they are managed in Valimail. While only one of the two authentication methods is required for an email to pass DMARC, our recommendation is to configure both whenever possible.

To setup DKIM for your ZixGateway SMB emails, please contact their support team at [email protected], or submit a ticket here.

You can also find the more info on how to set up SPF for ZixGateway SMB, here.

You can find more detailed information on how to add a DKIM key in Valimail, here:

Once you establish that ZixGateway SMB is an authorized sender for your domain, you will need to add the service in your Enabled Senders.

You will find more detailed information on how to add a service for your domain in Valimail, here:

Note: We encourage you to use the comment section for any useful information about your sending service, such as the name of the service owner, change request ticket numbers, etc.