block emails with no valid reverse DNS

[Michael Weiner]

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Anders Andersson, IT wrote:
>>-----Original Message-----
>>From: MailScanner mailing list
>>[mailto:MAILSCANNER at JISCMAIL.AC.UK] On Behalf Of Doc Schneider
>>Sent: Tuesday, May 24, 2005 11:44 PM
>>To: MAILSCANNER at JISCMAIL.AC.UK
>>Subject: Re: block emails with no valid reverse DNS
>>
>>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:
>
>
>
> States that onlu work up to 8.12, what about 8.13.x?
>

Check out regex-milter, it can reject emails based on name resolution.
It can be found here http://www.benzedrine.cx/milter-regex.html

HTH
Michael Weiner
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