Will adding the offending domain to the Filter= list stop the duplicates?
In my case, satx.rr.com

Partial headers:
<snip>
Received: from MAELSTROM.STJOHNS.EDU by
MAELSTROM.STJOHNS.EDU(LISTSERV-TCP/IP release 1.8d) with spool id 1744976
[log in to unmask]; Tue, 13 Mar 2001 11:19:27 -0500
Received: from mail.satx.rr.com (24.93.35.54)by maelstrom.stjohns.edu (LSMTP
for OpenVMS v1.1a)with SMTP id <[log in to unmask]>; Tue,13
Mar 2001 11:19:27 -0500
Received: from mail pickup service by mail.satx.rr.com with Microsoft
SMTPSVC;Tue, 13 Mar 2001 10:19:46 -0600
Received: from sm3.texas.rr.com ([24.93.35.210]) by mail.satx.rr.com
withMicrosoft SMTPSVC(5.5.1877.537.53); Tue, 06 Mar 2001 11:40:22 -0600
Received: from maelstrom.stjohns.edu (maelstrom.stjohns.edu
[149.68.45.24])by sm3.texas.rr.com (8.11.0/8.11.1) with ESMTP id
f26HTTU20878 for<[log in to unmask]>; Tue, 06 Mar 2001 11:29:29 -0600
Received: from maelstrom.stjohns.edu (149.68.45.24)by maelstrom.stjohns.edu
(LSMTP for OpenVMS v1.1a)with SMTP id <[log in to unmask]>;
Tue,06 Mar 2001 12:37:49 -0500
<snip>


--
Randy
(Dad of Sean, 9yo CP and Shane, 4yo Autistic, DH to Cindy)
http://www.our-kids.org/