How to authenticate my domain's email with SPF and DKIM

MATTHEW STENGERT

• April 29, 2025 01:10

Hi All,

I'm receiving a delivery failed message whenever I send an email to a Gmail account:

Diagnostic information for administrators:

Generating server: relay.mailchannels.net

mattystengert@gmail.com
gmail-smtp-in.l.google.com
Remote server returned '554 5.7.0 <gmail-smtp-in.l.google.com #5.7.26 smtp; 550-5.7.26 Your email has been blocked because the sender is unauthenticated. 550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM. 550-5.7.26 550-5.7.26 Authentication results: 550-5.7.26 DKIM = did not pass 550-5.7.26 SPF [intellidraft.com.au] with ip: [23.83.214.25] = did not pass 550-5.7.26 550-5.7.26 For instructions on setting up authentication, go to 550 5.7.26 https://support.google.com/mail/answer/81126#authentication 41be03b00d2f7-b15fbca8861si13609926a12.701 - gsmtp>'

Can anyone advise how to fix this?

Thank you in advance for your help.

Kind regards

• 

  quietFinn

  • April 29, 2025 11:01

  Maybe this helps:
  https://support.mailchannels.com/hc/en-us/articles/200262610-Set-up-SPF-Records

   

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  mtindor

  • April 29, 2025 12:52

  What @quietfinn said.   Plus, you might also consider adding a DMARC record via your cPanel Zone Editor as well -- even just a very conservative DMARC record that does no quarantining/rejecting is better than no DMARC at all.

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