Broken sendmail rewrite rule...generally found in pre-8.7.x sendmail.
You've got the mail routed through an 8.6 sendmail, if you upgrade it to
8.7.x or later this will likely go away, as the default 8.7.x sendmail.cf
does not appear to inherit this bug from 8.6.x.

And no, I don't know which ruleset in sendmail.cf is causing the problem :)

Nathan

On Thu, 8 May 1997 14:36:24 -0400 Toms,Laura said:
>Can anyone tell me why LISTSERV is sending out mail with these header
>lines --
>
>  From @@oclc.org Thu May  8 14:14:15 1997
>  Return-Path: <@@oclc.org>
>  Received: from dev1.NISDEV (dev1.dev.oclc.org) by oclc.org
>(4.1/SMI-4.1)
>        id AA21516; Thu, 8 May 97 14:14:14 EDT
>  Received: from fssun10 by dev1.NISDEV (SMI-8.6/SMI-SVR4)
>        id OAA09149; Thu, 8 May 1997 14:14:13 -0400
>  Message-Id: <[log in to unmask]>
>  Date:         Thu, 8 May 1997 14:14:14 -0400
>  From: "L-Soft list server at OCLC, Inc. (1.8b)" <[log in to unmask]>
>  Subject:      File: "NETMANAGERS LIST"
>  To: [log in to unmask]
>  Status: RO
>
>It's the first two with the return address as @@oclc.org that concern
>me.  I haven't noticed this before, but it may have something to do with
>the way I recently reconfigured listserv to route mail through a host
>running Sendmail 8.  Or it may have always been like that.  I've just
>had my mailbox moved from UNIX to Microsoft Exchange, and Exchange can't
>deal with it at all.
>
>Thanks,
>Laura
>
>=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=
>Laura Toms, Postmaster/UNIX System Administrator
>OCLC Online Computer Library Center, Inc., Dublin, Ohio
>1-800-848-5878, x5016
>[log in to unmask]