Troubleshooting: Problems when sending emails with an SPF entry set up

The recipient's server declares emails sent by you invalid because of SPF checks and does not deliver the emails.


One of the following conditions is fulfilled:

  • SPF checks are only performed if the sender’s domain and the recipient’s domain are the same. Incoming internal emails are incorrectly declared invalid.
  • Your communication partner informs you that emails from your domain are declared invalid by SPF checks.

Cause: Your own TXT record is wrong

The IP addresses of your mail servers registered in the TXT record are wrong or missing.

Remedy: Editing the TXT entry

Add the missing IP addresses of your mail servers to the TXT entry or correct the IP addresses.