block emails with no valid reverse DNS {Virus Scanned}

[Christo Bezuidenhout]

I believe the MailScanner list footer to the file that was attached must be
removed before you can use the file.

Christo

-----Original Message-----
From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On Behalf
Of Doc Schneider
Sent: 24 May 2005 11:44 PM
To: MAILSCANNER at JISCMAIL.AC.UK
Subject: Re: block emails with no valid reverse DNS {Virus Scanned}

Vasantha Narayanan wrote:
> Hi,
>
> I want to block emails from servers which do not have a valid reverse
> DNS lookup.  I would like to be able to do this without using a DNSBL
server,
> but merely using dns.   Can you tell me:
> 1. How this can be done using Sendmail?
> 2.  How can this be done using MailScanner?
>
> Thanks.
>
> Vasantha

You can use this:

HTH,

-Doc

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