How to get my email address to say '.net' instead of .com

I have one working email and I have copied almost every setting to get the (.net) extension working that I must have in order for my end users to respond to me. What happened is my developer had to leave my project early. When he configured my server he named the server/domain with a ('.com') extension and I need it to be ('.net') because I think its really causing the email problems.  For example: I have one email that works great!!!  The working ('.net') email shows that is comes from my actual web address extension of (.net)  
  When I added a new email address in the Exchange console and I cannot get it to say (.net) when my end user/myself gets an email. Its still showing that the email is from a ('.com') address. I know my developer got the first one working great.  I just cannot figure out why when I have the exact settings as the working email with the ('.net') extension,that it still shows as a ('.com) when I have the exact settings Is needs to be like this-> 'myname@blah.('.net)'  How can this be fixed? IS there some other place there could be settings that differ from the working (.net) address? I sure hope that I do not have to rename the domain because I heard that is a tragedy about to happen. Any help would be just great!
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The domain in exchange is controlled by the "e-mail address policies" these determine what is applied to a user's exchange alias.

you can edit this using the following guide:
You may have to add the .net domain to the exchange server first. The guide for that is here:
You can create another email address policy with the desired SMTP domain
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jeffmeverettAuthor Commented:
Well I do apologize if I did not word everything correctly in my original post and or replies. I did figure this out. Again I apologize I am a hardware guy not software (Now I know why...firmware only please!)  Ok my solution was to log into the server as Admin. Then in the Exchange Management Console 2010, when going to the properties of the user you have to change the 'reply to' function. Its done like this: Go to Exchange Management Console 2010->Microsoft Exchange on Premises->Recipient Configuration->Mailbox-> User ( then highlight 'user') - After that click on 'Properties' for the user. From there when viewing the properties of the user click on the tab 'E-mail addresses'. It will then take you to the menu to configure the 'SMTP' reply. ( at least I think thats what its called)- From there highlight the address in the box and the click 'edit'. It will ask you to add or change it to the domain extension of your choice. For example I needed to change present address from a '.com' extension to a '.net' extension. Using this method you should have no problems. No I just have to figure out if the domain on my server being a .com will have any effect on other things. So far so good. Good luck everyone!

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This is not the correct way to configure e-mail domains in Exchange 2007. Working it this way you will have to manually work through each user. Using the "accepted domains" tab in Server Configuration will allow you to automatically force compliance with the e-mail domain policy and allows you to accept e-mail from multiple domains as well as allowing e-mail addresses to be auto-created properly.
jeffmeverettAuthor Commented:
Hey thats a great solution! Thanks for the help! I do agree that this is not the best way to have it configured.  I had a bad feeling about it. For now all I need it to work for is 5 email addresses and I have gotten them created and working just fine.  I still imagine I will have to rename the domain from .com to .net but thats another day of work. Do you see any further complications that could happen due to this configuration? The only thing I did not like is that I had to give the addresses 'admin rights' to work with Remote Desktop Connection....thats for another post I am sure, but thanks again MikeyLLB!
I don't see any real complications arising from this. It should work, you can always change the policy side later.
Even if you change the email addresses like that manually, your Exchange organization won't accept email for that email address until you have added that SMTP Domain to Accepted Domains.
jeffmeverettAuthor Commented:
Just to note to everyone there is more than one way to accomplish the task. I did figure out the solution, but I wanted everyone to get credit for each way it could be done. Please refer to each string/thread and you will have a guide to work with if this becomes and issue for you. Thank you all for your support and help!
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