An NDR from the Brightmail Gateway shows an error: "<email address>: 550 #5.1.0 Address rejected"

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Article ID: 177692

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Updated On:

Products

Messaging Gateway

Issue/Introduction

You receive a Non-Delivery Receipt (NDR) from the Brightmail Gateway Appliance stating ": 550 #5.1.0 Address rejected"

 

Cause

The email address was rejected as not valid by the recipient's mail server.

Resolution

Verify the recipient's email address.



Technical Information
This can be verified by opening a telnet session from the command line of the Brightmail Gateway and manually sending a message to this address. The server response will be the same, "<email address>: 550 #5.1.0 Address rejected"