Hi, We have an exchange 2007 server joined to main company domain, which all users have email accounts with, we also have additional email domains that user have as aliases so they can receive emails from those addresses.We would now like a few users to be able to send using from in outllook, from their alias email addresses. When we try this it comes up you do not have permission to send from this address.Do you know if this is possible? as we cannot find a way at the moment to enable this.Any help would be much appreciated.Chris.

Hello Chris, Unfortunately what you are trying to do is not natively supported. I wish it was, because it would make acquisitions and mergers somewhat easier to deal with. Anyway, you can do this as a complete hack. It does work, if you use Outlook. 1. Remove the second SMTP address from the user's account. 2. Create a resource account and assign it the second SMTP address. 3. Modify the resource account so that mail is forwarded to the user (Mail Delivery Options -> Forward To) 4. Add the Send-As permission using add-adpermission to the resource account for the user. This will allow the user to use the From field in Outlook to send using the other SMTP address. Mail coming in will go to the resource account, which will redirect to the user mailbox. Note that you can't do this in OWA. If the user wanted to send as the other address using OWA they would have to open the other mailbox and send from there.

Hi Neil, thanks for the reply, we have tried that and all seems ok except for if we give a user send as permission, they do the from in outlook and they get a delivery message sayng they do not have send permission from this account.Any ideas why this is coming up even though they have send as permissions. We get this on a few users also.Regards.Chris

Hi,For the "Send As" permission is not working, please try the solution based on the below article:http://msexchangeteam.com/archive/2005/01/07/348596.aspxThanksAllen