How do I fix Outlook 550 relay not permitted?

How to fix ‘550 Relay not permitted’ in Outlook Express on Windows:

1. Launch Outlook Express.
2. Under “Tools” select “Accounts…”
3. Select your account name and click “Properties” to edit your account.
4. Click the “Servers” tab.
5. Check the “My Server Requires Authentication” check box and the adjacent “settings” button.

Is not permitted to 550 relay through this server without authentication?

1.1) or Server error: 550 relay not permitted, authentication required / Relay not allowed The most common cause is that authentication is missing in the outgoing mail settings. With outgoing mail, your e-mail address / login and corresponding password are also required. tld You use port 25 for outgoing mail.

Why is 550 unable to relay Exchange 2010 server error?

550 5.7.1 unable to relay Exchange 2010 error can be occurred also due to the corruption of EDB database. So, you can use eseutil repair tool (which is built in tool in Exchange Server for repairing) or you can try EDB Repair in case you are looking for simple and fast repairing solution of your corrupted EDB.

Why does SMTP say 550 relay not permitted?

In this case the error number (0x800CCC79) and the server response (550 relay not permitted) show what the problem actually is. The reason is that you have probably forgotten to enable SMTP server authentication, and it is required in order to send emails.

What does it mean to receive error 550 5.7.1 unable to relay?

The server response was 550 5.7.1 Unable to relay” In a nutshell, this message is a non-delivery report (NDR) or delivery status notification (DSN) of emails. The error 550 5.7.1 generally implies that the user is not authorized, and therefore, fails to send emails. As a result, the message is relayed back to the server.

What does it mean when you get error 550 in outlook?

What is Error 550? When you attempt to send emails through Microsoft Outlook or Outlook Express, the mail encounter a send error and the mail will return with a 550 error message stating as What this error represents is that your SMTP server was not able to deliver your send email.