How to troubleshoot 'Mail delivery failed: returning message to sender' error?I

ImSimanto

• June 04, 2018 14:07

I'm using a cPanel VPS. Facing an issue with an account on my VPS. When I'm trying to send email I'm getting the error report below: ========================================================= This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: email@gmail.com host gmail-smtp-in.l.google.com [74.125.197.26] SMTP error from remote mail server after end of data: 550-5.7.1 This message does not have authentication information or fails to pass 550-5.7.1 authentication checks. To best protect our users from spam, the 550-5.7.1 message has been blocked. Please visit 550-5.7.1 Bulk Senders Guidelines - Gmail Help for more 550 5.7.1 information. 31-v6si12778261plc.173 - gsmtp Reporting-MTA: dns; thunder.example.com Action: failed Final-Recipient: rfc822;email@gmail.com Status: 5.0.0 Remote-MTA: dns; gmail-smtp-in.l.google.com Diagnostic-Code: smtp; 550-5.7.1 This message does not have authentication information or fails to pass 550-5.7.1 authentication checks. To best protect our users from spam, the 550-5.7.1 message has been blocked. Please visit 550-5.7.1 Bulk Senders Guidelines - Gmail Help for more 550 5.7.1 information. 31-v6si12778261plc.173 - gsmtp ========================================================== Can anyone please help me in troubleshooting this issue?

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  rpvw

  • June 04, 2018 19:47

  This resource has a lot of helpful tips:

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  cPanelLauren

  • June 04, 2018 19:50

  Hello, Based on the error you're receiving it looks like your domain doesn't have an SPF or DKIM: 550-5.7.1 This message does not have authentication information or fails to pass 550-5.7.1 authentication checks. To best protect our users from spam, the
  You can check if your domain has these by running the following: dig txt yourdomain.com dig txt default._domainkey.yourdomain.com
  If it doesn't have them and your nameservers point to the server the domain is hosted on you can easily add them at cPanel>>Email>>Mail Authentication. Thanks!

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