SPF helps you authorize the sending sources for your outgoing emails. This in turn helps you gain protection against spam and email fraud. In order to enable SPF for your Plesk server, follow these steps:
Enabling SPF for Plesk (outgoing emails)
Login to your DNS registrar’s account
Navigate to Tools & Settings > DNS Template
You need to edit the DNS TXT record related to SPF
An SPF TXT record for Plesk will have the following syntax:
yourdomain.com TXT v=spf1 +a +mx +a:test.plesk.com -all
Publish this record in your DNS records section for your respective domain.
Note: If you don’t have an SPF record previously for your domain, simply publish the above-mentioned record to enable SPF for outgoing emails using Plesk. If you do have an existing SPF record in your DNS, you need to modify it to include Plesk.
Wait for 24-48 hours to allow your DNS to process the changes
Enabling SPF for Plesk (incoming emails)
Login to your Plesk account
Go to Tools & Settings > Mail Server Settings > SPF spam protection
Enable the check box for SPF as shown below
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