default send exchange address for new email domain


Here is my new Email challenge. My company has merged with another firm. How can I allow existing employees (from merged firm)  to send & receive their old emails on my existing MS Exchange server?
Currently, I would like for their send address to remain -Their old bob@, not
Any items?
Who is Participating?
Justin DurrantConnect With a Mentor Sr. Engineer - Windows Server/VirtualizationCommented:
you need to get the company that hosts your Domain name to put the MX Record for the other company  to point to your mail server. Usually we set up an A record such as to point to your static IP address.

Then set the MX record to point to

Also get your ISP to add a reverse DNS record so your ip will resolve to

To set up your exchange to handle mail for that domain name do the following

   1.Click Start, point to Programs, point to Microsoft Exchange, and then click System Manager.
   2.In the console tree, expand Recipients, right-click Recipient Policies, point to New, and then click Recipient Policy.
   3.In New Policy, select the E-Mail Addresses check box, and then click OK.
   4.On the General tab, in the Name box, type a name for your new policy.
   5.On the E-Mail Addresses (Policy) tab, click the SMTP address space, and then click New.
   6.In New E-mail Address, click SMTP Address, and then click OK.
   7.In SMTP Address Properties, in the Address box, type the SMTP address space that you want to share.
   8.To make Exchange nonauthoritative for this SMTP address, clear the This Exchange Organization is responsible for all mail delivery to this address check box.
   9.In SMTP Address Properties, click OK.
  10.On the E-mail Addresses (Policy) tab, click OK.

Once that is done.. you can set the reply-to\primary address in ADUC
scubamikeyAuthor Commented:
Great, Just what i needed
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