On Wed, 19 Nov 2008 17:04:53 -0500, Ricardo Stella <[log in to unmask]> wrote:

>We standardized all of our addresses to be @domain.org.

For addresses related to humans, this is a good policy, but for mail related to
LISTSERV it is a bad idea that will cause many ongoing headaches.
This is only the beginning of your problems:

	Recipient: [SMTP:[log in to unmask]]
	Reason: Remote SMTP Server Returned: 550 Invalid recipient   
         <[log in to unmask]> (#5.1.1)

>The question is that even if not doable on a global basis

change the value of NODE= in your go.user file and stop/restart LISTSERV.