We own a domain name for a specific project we are working on, lets call it ourproject.com We have 5 email accounts registered to this domain, i.e. bob@ourproject.com, steve@ourproject.com etc etc. Our staff dont like the webmail facility, they already have a corporate email account through the exchange server, i.e. bob@ourcompany.com, steve@ourcompany.com they want the mail for @ourproject.com to ALSO come into the mailbox for @ourcompany.com. I am told this is do-able by adding the ourproject.com to our accepted domains in exchange, and then you can bring 2 SMTP addresses into 1 mailbox, but you have to specify a primary account for outgoing mail. 1) However, when you setup a new email address in exchange, where does it check to see if that email address is already in use somewhere out there? And what happens if it sees bob@ourproject.com is already setup with a webmail facility? 2) If you already have a webmail account setup , will this cause issues when trying to set it up in exchange (I must confess I dont know the process of setting up a new SMTP address through exchange, I have only ever done a new email account through webmail such as live.com ) 3) If we want the account setup in exchange are we going to have to delete the webmail account first? I am asking from a managers perspective not an exchange admin, so please consider in your replies this fact. Cheers

Hi Apart from adding the accepted domain and then adding the additional email address to the users that require it, you will need to change the DNS MX record for ourproject.com to point to the same server as ourcompany.com. The MX record is used by email servers to determine where to route mail on the Internet so that will need to be changed before mail will be delivered to your server. Your DNS or webmail hosting provider should be able to assist you with the instructions for changing this record. You don't have to delete your webmail accounts before making this change they will just not receive any further email. Cheers, Steve

Hi Apart from adding the accepted domain and then adding the additional email address to the users that require it, you will need to change the DNS MX record for ourproject.com to point to the same server as ourcompany.com. The MX record is used by email servers to determine where to route mail on the Internet so that will need to be changed before mail will be delivered to your server. Your DNS or webmail hosting provider should be able to assist you with the instructions for changing this record. You don't have to delete your webmail accounts before making this change they will just not receive any further email. Cheers, Steve Thanks Steve So say you have bob@myproject.com which you setup via a webmail facility, you need bob@myproject.com you dont need to disable the email account via the webmail facility first and then set it up again in exchange, you can leave it open, but just add it in exchange and then change MX records so any mail sent to that address now comes to exchange and not the webmail server? Also could you clarify: When you setup a new email address in exchange, where does it check to see if that email address is already in use somewhere out there? And what happens if it sees bob@ourproject.com is already setup with a webmail facility?

Also could you clarify: When you setup a new email address in exchange, where does it check to see if that email address is already in use somewhere out there? And what happens if it sees bob@ourproject.com is already setup with a webmail facility? Exchange Server has no way of checking if the email address is being used somewhere on the Internet. I can, and will, only check to see withing the same environment (Forest) it is installed into if the email address is 'free' or else report a duplicate address error. To check if the proposed domain name is free to use or not is something that your DNS registrar assists you with when you register the domain.Jesper Bernle | Microsoft Community Contributor 2011 Awardee

>>So say you have bob@myproject.com which you setup via a webmail facility, you need bob@myproject.com you dont need to disable the email account via the >>webmail facility first and then set it up again in exchange, you can leave it open, but just add it in exchange and then change MX records so any mail sent to that >>address now comes to exchange and not the webmail server? Yes this is correct. >>Also could you clarify: >>When you setup a new email address in exchange, where does it check to see if that email address is already in use somewhere out there? And what happens if it >>sees bob@ourproject.com is already setup with a webmail facility? As Jesper said, there is no checking to see if an addresses in in use, the MX record determines which server(s) will receive mail for a particular email domain name. I could configure steve@myproject.com on one of my servers here and it would have no effect as the MX record still points to a server where your mailbox is located.

Also could you clarify: When you setup a new email address in exchange, where does it check to see if that email address is already in use somewhere out there? And what happens if it sees bob@ourproject.com is already setup with a webmail facility? Exchange Server has no way of checking if the email address is being used somewhere on the Internet. I can, and will, only check to see withing the same environment (Forest) it is installed into if the email address is 'free' or else report a duplicate address error. To check if the proposed domain name is free to use or not is something that your DNS registrar assists you with when you register the domain.Jesper Bernle | Microsoft Community Contributor 2011 Awardee