SPF authentication must be configured for a company's domain security. Without SPF, unauthorised or illegitimate sources can send emails on your behalf, putting your company's reputation at risk. Follow these steps if you use Yandex as an email service provider and want it to send emails on your behalf as an approved sender:
Login to your DNS management console. If you use Yandex as your DNS hosting provider, visit Yandex.Connect DNS Editor
In the DNS Records section, add/modify an SPF record
Select TXT as your resource type and @ as your host
In the TTL field enter 21600
In the Value field, enter your SPF record value, depending on the following two scenarios
In case you don’t have an existing SPF record in your DNS:
Create a DMARC TXT record for Yandex and publish it in your DNS, with the following syntax:
v=spf1 include:_spf.yandex.net ~all
In case you already have an existing SPF record in your DNS:
Simply add Yandex to your existing record in the following way:
If your previous record was: v=spf1 include:spf.zoho.com ~all
Your new record will be:
v=spf1 include:spf.zoho.com include:_spf.yandex.net ~all
Note: It might take your DNS 24-48 hours to process the changes.