SPF records

Voys Partners mail

For voicemail messages and incoming faxes, the customer receives an email sent from a no-reply email address under your partner domain. To prevent these emails from ending up in your customers' spam folder, it's advisable to make a DNS adjustment. This adjustment is located in the so-called SPF record.

What does SPF do

Using the Sender Policy Framework (SPF), you specify in the DNS which mail servers on the internet are allowed to send mail on behalf of your domain. For example, if you use Google mail for your own domain's email, it's recommended to set up a TXT record on your domain with the following content: "v=spf1 include:_spf.google.com ~all". Office 365 requests a similar configuration. This ensures that your legitimate emails don't end up in the recipients' spam folders.

What you need to do

If you don't have an SPF record yet, no action is required in principle. We do recommend that you look into whether you can and want to have an SPF record, but this requires some research. If you already have an SPF record, you probably know how it works. The adjustment we recommend is as follows: To allow mail from our servers under your domain, add "include:_spf.voys.nl" to your SPF record. If you have the example given above (mail via Google Apps for Work), it becomes:

v=spf1 include:_spf.google.com include:_spf.voys.nl ~all

Various tools are available online to test whether your new SPF record works correctly. Use these to check if emails from, for example, IP address 195.35.114.68 are allowed. This can be done using http://www.kitterman.com/spf/validate.html (lower form).