Sandy -

This is very simple.

There is no DNS record for "listserv.herc.com"

Add a forward and reverse record to DNS to associate Listserv.herc.com
with the IP address of the Listserv box.

Bryan Bradsby

Postmaster
Texas State Government Net
==============================

On Fri, 2008-12-05 at 13:15 -0500, S. Dobbs wrote:
> My company uses Lotus Notes. When I send messages to internal Internet addresses that are within our DMZ, e-mail goes fine. Addresses that use an external domain return error messages. Each of these 3 are a little different.
>
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

>
> Domain of sender address [log in to unmask] does not exist		 		  Subject:
>

> Sandy Dobbs
> Ashland Inc.
> [log in to unmask]