How do I add another server/include to an SPF record?

Category: Email | Updated: 6 October 2025
Quick answer: Add multiple "include:" entries to your SPF TXT record, separated by spaces. Keep Amicatek's include:spf.stackmail.com and add your additional provider's SPF include.

Why add multiple providers to SPF?

If you use Amicatek's mail server but also send emails through other services (G Suite, Office 365, Mailchimp, SendGrid, etc.), you need to authorize all these providers in your SPF record. This prevents your emails from being marked as spam.

Amicatek's default SPF record

v=spf1 include:spf.stackmail.com a mx -all

Common providers to add

G Suite / Google Workspace

v=spf1 include:_spf.google.com include:spf.stackmail.com a mx -all

Office 365 / Microsoft 365

v=spf1 include:spf.protection.outlook.com include:spf.stackmail.com a mx -all

Mailchimp

v=spf1 include:servers.mcsv.net include:spf.stackmail.com a mx -all

SendGrid

v=spf1 include:sendgrid.net include:spf.stackmail.com a mx -all

How to update your SPF record

  1. Log in to https://cp.amicatek.link and select Manage Hosting.
  2. Open Manage DNS for your domain.
  3. Find the existing SPF TXT record (usually starts with "v=spf1").
  4. Edit the record to include your additional provider's SPF include.
  5. Save the changes. DNS propagation may take a few hours.

Important notes

  • Keep Amicatek's include: Always keep include:spf.stackmail.com if you use Amicatek's mail servers.
  • Order matters: SPF checks includes in order. Put the most commonly used providers first.
  • 10 DNS lookup limit: SPF has a limit of 10 DNS lookups. Too many includes can cause SPF to fail.
  • Test your changes: Use SPF testing tools to verify your record works correctly.

Multiple providers example

If you use both G Suite and Mailchimp:

v=spf1 include:_spf.google.com include:servers.mcsv.net include:spf.stackmail.com a mx -all

Troubleshooting

  • SPF too long: If your SPF record exceeds 255 characters, consider using SPF flattening services.
  • Multiple SPF records: You can only have one SPF record per domain. Combine all includes into one record.
  • DNS propagation: Changes can take up to 24 hours to propagate globally.

Testing your SPF record

Use online SPF checkers to validate your record:

  • MXToolbox SPF Record Lookup
  • Kitterman SPF Record Testing Tools
  • Your email provider's testing tools

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