Forum Discussion
Getting bounces from the server
We are trying to send email to email id email address removed for privacy reasons
but getting error
{
"emailAddress": "email address removed for privacy reasons",
"action": "failed",
"status": "5.7.1",
"diagnosticCode": "smtp; 550 5.7.1 Unfortunately, messages from [23.251.230.83] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3150). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [CY4PEPF0000FCBF.namprd03.prod.outlook.com 2024-01-03T10:32:09.928Z 08DC089DF5241824]"
}
Hi Priya1520,
the error code "550 5.7.1" is a common SMTP (Simple Mail Transfer Protocol) error that indicates a problem with email delivery. This can occur for various reasons:
- The recipient's email server may flag your message as spam.
- Security settings on either your organization's or the recipient's side could be blocking the email.
- Lack of permission to send emails to the recipient.
- Incorrect routing of the message to the wrong email server.
In your case, the error points to the IP address 23.251.230.83 being on a block list, likely due to past spam activity from that IP. To resolve this, contacting your Internet Service Provider (ISP) and requesting removal from the block list may be necessary. Checking your domain's SPF (Sender Policy Framework) entry is also advisable.
Fix NDR error 550 5.7.1 in Exchange Online - Exchange | Microsoft Learn
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Kindest regards,
Leon Pavesic
(LinkedIn)- hi my name is terry
Priya1520 you found any solution? in my case, emails are delivered to Gmail addresses too, just outlook servers are bounce.
- I am very happy as I passed my Azure AZ-104 exam by a whopping score of 900/1000. It has all the authentic and valid questions available for practice.
