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In this section, we cover updating your domain's SPF record so Paubox is given permission to send email
SPF record update
NOTE: You will need access to your where the DNS records for your domain are hosted. If you're not the one who handles this for your organization, pass the information belong along to whoever does (it might be your web developer/web designer or someone on your IT team).
1) Log in to where the DNS records for your domain are hosted
2) Look for a record of type TXT that has a value that begins with the text "v=spf1 " (there may or not be one). If you find one, that's an SPF (Sender Policy Framework) record. The SPF record gives permissions for specific systems to send email for a domain.
As an example, The default SPF record value for sending email via Google Workspace (formerly known as G Suite) is shown below:
v=spf1 include:_spf.google.com ~all
This value allows only Google to send email for the domain. To also allow Paubox to send email for the domain, edit the SPF record's value to the following:
v=spf1 include:_spf.google.com include:_spf.paubox.com ~all
The general idea is to add include:_spf.paubox.com to the value of your existing SPF record, if applicable. Please make sure to save your changes and to verify the syntax of the record is valid with a free online tool like this one.