Exchange 5.5 change sender address

Run the exchange server administrator program and go the mailbox of each of the people you want to change. Goto the email addresses tab and highlight or add the address you want to use as the reply address and then click on "set as reply address".
Fairly straight forward.

You could export the whole container to a csv file and make the changes that way, then import the csv to overwrite the container. But unless you've done that before, I'd stick to first approach.

Good Luck
0bytes

Much easier way if all you want to do is change the smtp address and don't really care about the original.

1. Open Exchange Admin
2. Open your Site - Configuration
3. Open the properties of Site Addressing
4. On the Site Addressing tab make the chnage to the SMTP addressing. Once you click ok and save the changes, Exchange will make all of the address changes in the background.

Now if you wish to keep all of the original, but need to add a second SMTP proxy address and have the second Proxy set as the reply back address requires a little work.

What you want to do is export the address list into a CSV file which can be opened and manipulated via Excel, make the necessary changes in the CSV, and then import these settings back into the Directory Store. For info on how to Import mulitple SMTP addresses see the following technet article:

XADM: How to Import Multiple SMTP Addresses [Q148339]

It will at least point you in the right direction.

Good luck

Rick