SPF(supported)
DKIM(recommended)
This article covers the SPF and DKIM authentication processes for Plesk 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.
Configuring DKIM authentication for your Plesk emails
Go to Tools & Settings > Mail Server Settings > DKIM spam protection section.
Enable the Allow signing outgoing mail or/and Verify incoming mail (For Plesk on Linux only) and press the OK button:
Verify incoming mail (Plesk for Linux)
This option switches on DKIM checking for all incoming mail. All messages are checked, and if the check fails, are marked with a special header.
Allow signing outgoing mail
This option enables customers to switch on the DKIM signing of outgoing mail on a per-domain basis.
Warning: It does not automatically enable the signing of outgoing email messages. To use DKIM, users must switch it on for individual domains.
You can also find the instructions on how to set up DKIM for Plesk, here.
Add a Plesk DKIM key in Valimail
You can find more detailed information on how to add a DKIM key in Valimail, here:
Configuring SPF authentication for your Plesk emails
Once you establish that Plesk 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.