On Fri, 22 Nov 2002 09:55:35 -0000, Michael Quinion
<[log in to unmask]> wrote:

>"They are being blocked
>by our firewall since they are using a non-standard Received header.
>They need to straighten their act out!" and quoted the following log
>entry:
>
>> 11246618 11/20/02 13:04:36 smtp-proxy[31031] [164.76.102.107:63666
>> 192.168.0.29:25] (spamscreen) Found spam from 164.76.102.107 (forged
>> Received: header) from [log in to unmask]

It is the company/ISP that needs to 'straighten their act out'.  There is
nothing non-standard about that.  Hmmm. that should be a Return-Path:
header not a Received: header.  Their own mail system must be corrupting
the mails.  Bad thing for a mail system to do...