Solved

Exchange 2007 New accepted Domain, 5.1.0 - Unknown address error 550-'5.7.1 Unable to relay'

Posted on 2014-01-24
1
1,281 Views
Last Modified: 2016-10-25
Hi Guys,

This is my first time adding a new domain in exchange 2007.

I have been following this guide on adding a new domain to exchange

http://www.petri.co.il/configure-exchange-2007-recieve-email-other-domains.htm

Internal email work and I can send out external email ok.

When I try to send in an email externally from gmail or hotmail however I get this error message

Remote-MTA: dns; [10.4.126.40]
 Diagnostic-Code: smtp; 5.1.0 - Unknown address error 550-'5.7.1 Unable to relay' (delivery attempts: 0)

Email come in through an ironport and then are routed to netscalers, the ip address above is the netscaler. They then load balance the mail to the exchange servers.

Any help would be appreciated.
0
Comment
Question by:terrlock
1 Comment
 

Accepted Solution

by:
terrlock earned 0 total points
ID: 39806331
Manage to resolve this by restarting the exchange transport service.

Took me a while to figure that one out.
1

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Local Continuous Replication is a cost effective and quick way of backing up Exchange server data. The following article describes the steps required to configure Local Continuous Replication. Also, the article tells you how to restore from a backup…
MS Outlook is a world-class email client application that is mainly used for e-communication globally.  In this article, we will discuss the basic idea about MS Outlook, its advanced features, and types of MS Outlook File formats.
The view will learn how to download and install SIMTOOLS and FORMLIST into Excel, how to use SIMTOOLS to generate a Monte Carlo simulation of 30 sales calls, and how to calculate the conditional probability based on the results of the Monte Carlo …
The viewer will learn how to create a normally distributed random variable in Excel, use a normal distribution to simulate the return on an investment over a period of years, Create a Monte Carlo simulation using a normal random variable, and calcul…

895 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now