5.7.1 smtp;550 Unable to relay

One of our email addresses is encountering problems with receiving email. The sender gets a message: 

The following recipient(s) could not be reached: 

User1@domain.com on 11/01/00 8:14 AM 

The originator does not have permission to submit message 
dns;Sendingdomain.com failed 5.7.1 smtp;550 
5.7.1 Unable to relay for User1@domain.com 

The 550 5.7.1 error has to do with the sender not able to relay mail from their server to the recipient. This is a server configuration problem on their end. Please see the Microsoft Knowledge Base article below. 

  • 54 Users Found This Useful
Was this answer helpful?

Related Articles

Cannot connect to outgoing email server

Cannot connect to your outgoing (SMTP) email server, getting Error 0x80042109   The error...

Duplicate Email Messages with Outlook

QUESTION I am getting duplicate email messages in my Inbox when checking my email with Outlook....

Message Delayed email warning

Your message has been delayed and is still awaiting delivery to the following...

Server/webmail inbox is full

If you find that your inbox on the email server is no longer accepting messages and senders are...

How to check to see if your ISP allows email to be sent over port 25.

SMTP Check Port 25 with the Telnet Command You can check your SMTP Server on SMTP port 25 with...

Powered by WHMCompleteSolution