> -----Original Message-----
> From: Covington, Chris [mailto:[EMAIL PROTECTED]
> Sent: 11 September 2003 15:21
> To: Tony Hoyle; [EMAIL PROTECTED]
> Subject: RE: [SAtalk] Rule for no reverse DNS
>
>
> header NO_RDNS Received=~ /unknown/
> describe NO_RDNS Sending MTA has no reverse DNS
> score NO_RDNS 2
>
> header NO_RDNS2 Received=~ /\(\[*\]\)/
> describe NO_RDNS2 Sending MTA has no reverse DNS
> score NO_RDNS2 2
>
Since there isn't a standard for received headers, no rule will work for
Everyone...
Postfix (sendmail is similar AFAIK):
Received: from CREATIONmail.com (unknown [211.211.116.10])
by mail.magenta-netlogic.com (Postfix) with SMTP id 4955FBFA11
for <[EMAIL PROTECTED]>; Thu, 11 Sep 2003 17:12:49 +0100
(BST)
Exim:
Received: from [64.34.99.5] (helo=metellus.argate.net)
by mail.python.org with esmtp (Exim 3.21 #1)
id 152MSg-0007fr-00
for mailman-users at python.org; Tue, 22 May 2001 20:25:14 -0400
MS Exchange:
Received: from mail.magenta-netlogic.com ([192.168.1.2]) by
ireland.local.mnl with Microsoft SMTPSVC(5.0.2195.5329);
Thu, 11 Sep 2003 17:25:32 +0100
Note that that last example would match your RDNS2 rule, even though the
server has a valid reverse (AFAIK Exchange doesn't
Do reverse DNS checking).
Tony
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