Exchange 2010 relay error message

Asked By 10 points N/A Posted on -

Hi. I'm facing a problem while setting up relaying on Exchange 2010.

Yes, I use an intranet page written in asp .net to send an email to a group of addresses stored in an access database. The problems emerged when the page wants to send emails outside of the domain. Sending Emails within the domain or sending internally is ok..

The error message is:

Server Error in '/' Application
Mailbox unavailable. The server response was: 5.7.1 Unable to relay

In EMC I've made a receive connector and set the network tab to receive mail from the local machine IP as per instructions to Allow a Server to Relay Email in Exchange 2007 and 2010 | |IT Problems (funny enough this page is now blocked when it was working fine this morning). I can send an email using SMTP commands on telnet so I don’t understand what the problem is. Can anyone know about this issue?

Kindly assist

Answered By 20 points N/A #100309

Exchange 2010 relay error message


Hey Cahen avila!

Do not worry about your problem. I am here to help you. So to avoid this problem you just have to follow these simple steps and you will found yourself free from this problem.

You have to configure your SMTP server as I am going to tell you in the following steps.

1. Click on Start menu and open Control panel.

2. In control panel click on Administrative tools and open IIS6 Manage.

3. Here open the virtual Server properties of SMTP.

4. Go to Access tab and open Relay Restrictions dialog by clicking on the Relay button.

5. Here you can see a relay computer list. you just have to add the IP address of both Loopback and web server.

Now with the help of SMTP server, they can easily relay the emails.



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