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Cannot send emails to Gmail users

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will.robinson
will.robinson
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So I am getting this message everytime I send emails to any gmail user.

Delivery to the following recipients failed permanently:


Reason: There was an error while attempting to deliver your message with [Subject: "Tacoma Wheels and Tires"] to. MTA p3plsmtpa12-09.prod.phx3.secureserver.net received this response from the destination host IP - 209.85.232.26 - 550 , 550-5.7.26 This message does not have authentication information or fails to 550-5.7.26 pass authentication checks. To best protect our users from spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26 https://support.google.com/mail/answer/81126#authentication for more 550 5.7.26 information. b33-20020a05620a272100b0067d3b4ad74asi2031678qkp.731 - gsmtp .

So I am getting this message everytime I send emails to any gmail user. Delivery to the following recipients failed permanently: Reason: There was an error while attempting to deliver your message with [Subject: "Tacoma Wheels and Tires"] to. MTA p3plsmtpa12-09.prod.phx3.secureserver.net received this response from the destination host IP - 209.85.232.26 - 550 , 550-5.7.26 This message does not have authentication information or fails to 550-5.7.26 pass authentication checks. To best protect our users from spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26 https://support.google.com/mail/answer/81126#authentication for more 550 5.7.26 information. b33-20020a05620a272100b0067d3b4ad74asi2031678qkp.731 - gsmtp .

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david
david
  • Top 10 Contributor
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This is generally an error of the domain information. The gmail server sees email incoming from domaina, yet the ip of smtp server is from domainb (probably a web host company). This can look like spam if the domainb does not have settings that tie it to domain a (normally DKIM and SPF settings). I suggest checking with your website host provider.