Solved: Fix Suggestions # 5.7.1 smtp 554 5.7.1 Denied Relay Access Exchange 2003

November 24, 2020 by Henry Alderson


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If you see error message # 5.7.1 smtp 554 5.7.1 Relay Access Denied Exchange 2003 on your computer, you should check out these repair tips. Denying access to a relay is a common email error. This means that the server will not allow the email to be sent to another mail server. The sender was not authenticated with the outgoing mail server. The receiving server has determined that the sending server is the source of spam or that the security check has failed.



Hi guys

I have an SBS 2003 server running Exchange 2003 SP2. They had a number of issues with their broadband provider Nildram and we have now switched them to BT. You are using MX records in a domain hosted by Nildram, which points to Mail Distiller's anti-spam solution.

After these changes, the following error appears to be displayed:

You are not authorized to send to this recipient. Contact your system administrator for help.
: Relay access denied

This does not always happen, just randomly with different users.

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Any ideas what parameters to check?

In short, email configuration:

PC -> Exchange Server -> SMTP ( -> BT Router

Hi Phil.


The Exchange mail server is configured so that users cannot send email to external domains or forward messages.

How To Fix Relay Access Error In Emails.

To determine the exact cause of Relay Access Denied 554 5.7.1 and resolve the problem y, follow these steps.

Step 1. Check your mail server settings and credentials.

First, make sure you entered the correct outgoing mail server name (SMTP), username, and password in your mail application (Outlook, Thunderbird, etc.). *

* Note. If the "Relay Access Denied" error occurred for no reason (for example, you worked fine until yesterday), enable SMTP Authentication (step 2).

(Outlook Email Account Settings)

Step 2. Enable SMTP user authentication and secure login.

To avoid spammers, many mail servers refuse to forward emails without first authenticating the user. So enable SMTP authentication and secure connection in your outgoing mail server settings.

1. From the File menu, select Account Settings *


* In Outlook 2007, 2003, go to Tools> Accounts.

2. Double-click your email account that received the "Relay Access Denied" error to openb its properties.

3. Click "Advanced Settings".

4. Select the Outgoing Mail Server tab and enable the My Outgoing Mail Server (SMTP) requires authentication option.

5. Then select the Advanced tab and specify the following settings for the outgoing mail server.

    1. SMPT port (outgoing server): 465
    2. Encryption type: SSL

6. Click "OK" and then "Check account settings".

7. If the verification was successful, click Next and close the email account settings. Finally, try sending an email to see if the "Relay Access Denied" error is gone. *

* Note. If the test fails or you continue to receive the "Relay Access Denied 554 5.7.1" error, reopen advanced settings. However, this Please specify the following parameters. **

    1. SMPT port (outgoing server): 587
    2. Encryption type: TLS or STARTTLS.

Step 3. Check your email provider's email settings and check for viruses.

If, after following the above steps and settings, you still receive the "Relay Access Denied" error message, contact your email service provider for your account information (username and password). password) and the SMTP encrypted connection settings (Port type and encryption) are correct.

It is also very important to check your computer and all other computers on the network for possible malware infections. To complete this task, follow all the steps in this quick start guide to scan and remove PC malware.

Step 4. Make sure your mail server or domain is listed as SPAM (BLOCK). *

* Note. The final step in resolving the Relay Access Denied ”primarily concerns corporate domains and mail server owners.

A. If you have an email address that is part of a corporate domain (for example, [email protected]) and you receive a "Relay Access Denied" error message:

1. Go to the following websites to check your email blacklist:


2. Enter the domain name of the company (for example "") or your full email address (for example, [email protected]) in the search field and click on "Blacklist". Check it out.

B. If you are the owner of an outgoing mail server and your end users receive a "Relay access denied" error message, make sure your mail server is not blacklisted. To do this:

1. Go to the following websites to check your email blacklist:


2. Enter the name of the outgoing mail server in the search field (for example, "") and click Check Blacklist.

That's all! Let me know if this guide helped you by leaving a comment about your experience. Please like and share this tutorial to help others.

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How do I fix a relay access denied in Outlook?

Error 554 Relay access denied?
  1. Log in to our server again. Delete all messages from the outbox folder. If you need to save the message, you can move it to the Drafts folder.
  2. Set up your email client to check emails before sending. In Outlook, go to Tools and select Email Accounts.

How do I fix SMTP Error 554?

How to fix SMTP Error 554
  1. Check your server's IP address for a possible blacklist.
  2. If you are not blacklisted, request that your IP address be whitelisted by the receiving server.





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