Unable to send an email from a Plesk server to Gmail: 421-4.7.0 This message does not have authentication information or fails to pass 421-4.7.0 authentication checks

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  My Domain Labs March 16, 2019 08:19

  I thought this was a support forum.... What kind of answer is that?!?!? I would tend to think most people who are reading this forum probably run their own DNS... 

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  Ivan Postnikov March 18, 2019 14:10

  Hello @Frank!

  Thank you for the feedback.

  Indeed, some resolutions may be a bit geeky but links provided in the article give additional instructions:

  • How to enable DKIM in Plesk
  • How to create SPF rule for the domain

  In case you have issues with applying a solution or something needs clarification, do not hesitate to ask!

  Also if you got stuck, there is always an option to submit a support request directly to us or to one of our partners in case Plesk license key was bought from them:

  https://support.plesk.com/hc/en-us/articles/213608509-How-to-submit-a-request-to-Plesk-support- 

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