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smtp;550 5.7.1 Unable to relay

Using outlook.com mail client.   For the last two days, unable to send a message to a specific address.  The response is:

Action: failed
Status: 5.7.1
Diagnostic-Code: smtp;550 5.7.1 Unable to relay for *** Email address is removed for privacy ***

under the link to interpret causes, I read:

  • General access denied, sender access denied; the sender of the message does not have the credentials required to complete delivery.
  • You are trying to relay your mail through another SMTP server, and that server does not allow you to relay.
  • The recipient might have mailbox delivery restrictions enabled. For example, a recipient's mailbox delivery restriction was set to receive from a Distribution List only, and the email message of a non-member is rejected and generates this error.
  • For Exchange Server 2003, a distribution list can be configured to restrict mail delivery from unauthenticated users. Mail that is sent by using an unauthenticated SMTP session is rejected.

If I am using outlook.com web client, why would this be happening?

Hi GregMillerVA,

 

Welcome to the Microsoft Community Support.

 

We understand that your goal is to be able to send email using your account and we’ll be glad to help you with this concern. First of all, we appreciate the information you’ve provided. For us to have a better picture of the issue you are experiencing, please return to us including the answers to the following questions below:

 

- The email address or account you are having issue with.

- Clarify what Outlook you are referring to. Is it Outlook.com web account or Outlook mail client? To know the difference, please read this article.

- Exact steps when sending out emails.

- Is there any changes to the account before having this issue?

- A full copy of bounced emails. To get this, kindly follow the steps below:

 

1. Go to your inbox.

2. Hover your mouse pointer on the failed email message you receive then right click on it.

3. Select View Message Source A window should pop-up with the Message Source.

 

You can provide the requested information on the private message I’ve created. Please login to this website to see the private message tab. Kindly post back to this public thread once you have replied to the private message to notify us of your response.

 

Hope to hear from you soon.

 

Regards,

Rona

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Hi Greg,

I appreciate your patience on this matter; don't worry; I'll make sure this will be taken care of.

I have replied in the private message area. Please sign in to this website to see the private message tab.

I look forward hearing from you.

Thank you.

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Hi Greg,

I have replied to you on private message. Please read.

Thank you.

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Hi guys,

Can anyone help me out wiht this issue?

Reporting-MTA: dns;SNT004-OMC2S19.hotmail.com
Received-From-MTA: dns;SNT406-EAS128
Arrival-Date: Tue, 14 Oct 2014 16:07:26 -0700

Final-Recipient: rfc822;*** Email address is removed for privacy ***
Action: failed
Status: 5.5.0
Diagnostic-Code: smtp;550-Please turn on SMTP Authentication in your mail client. 
550-snt004-omc2s19.hotmail.com [65.55.90.94]:60479 is not permitted to relay
550 through this server without authentication.

Thanks a lot

1 person found this reply helpful

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Your email client should have an option in the SMTP sections to put in a username/password. Make sure you do that. I use Thunderbird, so it's under "Account Settings" and then under the SMTP server settings. I'm sure you'll find it if you poke around.

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Question Info

Last updated December 2, 2022 Views 6,323 Applies to: