Fix email delivery failure problem
Budget: $30 – $250 USD
Recently, most emails from my domain are not delivered to receivers. The system sends back a failure message like this:
----------------------------
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed permanently:
* xxxxx[@]xxxx.com
Reason: There was an error while attempting to deliver your message with [Subject: "Saturday"] to xxxxx[@]xxxx.com. MTA p3plsmtps2ded02.prod.phx3.secureserver.net received this response from the destination host IP - 142.250.141.26 - 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. j7-20020a170903028700b001513a3bfea2si6634516plr.292 - gsmtp .
---------------------------
I need someone can solve this. Thank you.
----------------------------
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed permanently:
* xxxxx[@]xxxx.com
Reason: There was an error while attempting to deliver your message with [Subject: "Saturday"] to xxxxx[@]xxxx.com. MTA p3plsmtps2ded02.prod.phx3.secureserver.net received this response from the destination host IP - 142.250.141.26 - 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. j7-20020a170903028700b001513a3bfea2si6634516plr.292 - gsmtp .
---------------------------
I need someone can solve this. Thank you.