Whitelist Problem

[Julian Field]

At 10:57 13/08/2002, you wrote:
>On Mon, 12 Aug 2002 18:31:37 PST, you wrote:
>
> >Return-Path: <owner-mailscanner at JISCMAIL.AC.UK>
>
>This is taken from the enveloppe sender (mail from:).

Not always present. In sendmail you need a flag in the definition of the
"local" mailer to do this.

> >Received: from smtp.jiscmail.ac.uk (smtp.jiscmail.ac.uk [130.246.192.48])
> >          by netlx010.civ.utwente.nl (8.11.4/HKD) with ESMTP id g7D3s7E10837
> >          for <P.G.M.Peters at CIV.UTWENTE.NL>; Tue, 13 Aug 2002 05:54:07 +0200
>
>This address was present in the enveloppe header as the recipient (rcpt
>to:)

You have to ensure you use the last one of these (i.e. the first in the
headers) as it gets changed by ".forward" files and mailing list exploders.

> >From: Nathan Johanson <nathan at tcpnetworks.net>
>
>This is the From: header in the message.
>
> >To: MAILSCANNER at JISCMAIL.AC.UK
>
>And this is the To: header in the message.
>
> >X-UTwente-MailScanner: Found to be clean
> >X-UTwente-MailScanner-SpamCheck: RFC-IGNORANT-WHOIS
> >
> >Is it possible for someone to illustrate the difference between the
> >"envelope sender address" versus the "From" header?
> >
> >Maybe grab a full email header, paste it into a reply to the list, and
> >point out which is which? This seems like a recurring question and now
> >I'm even beginning to question my own understanding of it. it might even
> >be a good item for the FAQ. If I was convinced I understood it, I would
> >write it myself :)
>
>I included the relevant headers from your mail message. :-)
>
>And the correspondenting log-lines (removed irrelevant information):
>|g7D3s7E10837: from=<owner-mailscanner at JISCMAIL.AC.UK>,
>|g7D3s7E10837: to=<P.G.M.Peters at CIV.UTWENTE.NL>, delay=00:00:00,

--
Julian Field                Teaching Systems Manager
jkf at ecs.soton.ac.uk         Dept. of Electronics & Computer Science
Tel. 023 8059 2817          University of Southampton
                             Southampton SO17 1BJ