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SPF records

How to set up domain SPF records correctly.

SPF (Sender Policy Framework) is an extension of the DNS records of your domain, which increases the protection against SPAM on your side and on the side of your recipients. If you already use SPF records in your domain and want to send campaigns via Mailkit, it is necessary to include the Mailkit mail server addresses in your records.

In order to be able to send messages on your behalf from Mailkit servers, it is necessary for them to be authorized in the SPF domain record by adding our SPFs to your record. In your domain's DNS settings, look for a TXT record starting with "v = spf1" and add "...include: ..." to this record.

If your domain doesn't have an SPF record, we recommend that you create such a record in the form of "v=spf1 mx ~all"

CAUTION: Each domain can contain only ONE SPF record! It is therefore not permissible for there to be more than one SPF record, but all permissions must be in one SPF record. This record must not exceed the limit of 10 lookups, so it is necessary to monitor its length. Of course, this has not only practical reasons but also security. Therefore, be careful what is allowed in your domain and whether your SPF records are completely valid. We recommend using SPF analysis on the for checking.