Question : Sending Email From Alias or Distribution Group

I am trying to send an email on Behalf of a group which has an associated Distribution List.  I can select the specified distribution list in the From field but the email fails to send.  Is there any way to make this happen or to somehow specifiy an alias in the from field or MUST the email be sent from an actual Mailbox?

Answer : Sending Email From Alias or Distribution Group

Hi Bsharath, thank you for your response.
I am not the AD or Exchange Admin so it's tough for me to confirm some of this stuff.  I'm pretty sure we do have groups within groups.  So it sounds like what i need to do is contact my exchange admin and ask him to Enable the "Send on Behalf" feature for the target Distribution List?
Here is the error i get:
Your message did not reach some or all of the intended recipients.
Subject: test
Sent: 11/28/2007 12:50 PM
The following recipient(s) could not be reached:
Mast, Jake on 11/28/2007 12:46 PM
You do not have permission to send to this recipient.  For assistance, contact your system administrator.