What is SPF?
SPF is a standard that email servers use to verify that emails are legitimate and that your domain has not been spoofed by a hacker. Your domain's SPF record lists the domains or IP addresses of services that are authorized to send emails on your behalf. By including our domain (ne16.com) on your SPF record you are telling your recipients' servers that you have given us permission to send behalf of your domain and that your email can be trusted.
Can we have multiple SPF records for the same domain?
For your domain's SPF record to be valid and work as described above, you can only have 1 SPF record. When you have multiple records you will need to "combine" those records into one. This is basically done by creating a new SPF record that contains all of the parts of the existing different
records. A useful tool for making sure your SPF record is valid is this website: https://vamsoft.com/support/tools/spf-syntax-validator.
Does SPF relate in any way to the fact we send newsletters “from” different email addresses?
When sending your mail, the only part of an email address that matters from a deliverability standpoint is your domain. The domain is the part of the email address after the "@" (as in firstname.lastname@example.org). Sending from email@example.com and firstname.lastname@example.org both use the same domain so they will use the same DNS records. We do not need to authenticate two email addresses using the same domain.
SPF Authentication Steps
- If you have an existing SPF record: Add “include:ne16.com” to your record
- If you do not have an existing SPF record:
- Add a new TXT record
- Host Name = @ None
- TTL= 1 day, unless other value is preferred
- Text = “v=spf1 mx include:ne16.com ~all”
Publishing Authentication may take up to 48 hours to propagate the internet. To verify the DKIM and SPF records have been setup properly, your ESP offers visible check points when creating a new campaign.
How-to verify SPF and DKIM are setup:
- Navigate to the Campaigns dashboard.
- Click “Create New Campaign” button.
- Select your “Sender Name and Address” on the right column.
- Next to the Sender Name and Address you will see green indicators.
See these related authentication articles in our Help Center.