Re: [Exim] SMTP Spoofing - Preventing Local Relaying

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Autor: Suresh Ramasubramanian
Fecha:  
A: Jason Robertson, Tony Earnshaw, exim-users
Asunto: Re: [Exim] SMTP Spoofing - Preventing Local Relaying
At 07:42 PM 3/5/2003 -0500, Jason Robertson wrote:
>A few options that can be done, sender verification can be done.
>Create a filter that contains
>
>if (($sender_host_name contains "ppp") or
>     ($sender_host_name contains "dsl") or
>     ($sender_host_name contains "pool") or
>     ($sender_host_name contains "dhcp") or
>     ($sender_host_name contains ".cpe.") or
>     ($sender_host_name contains "interbusiness.it") or
>     (($sender_host_name contains "cable") and ($sender_host_name does
>not contain "bloor.is.net.cable.rogers.com"))) then

>
>[ Note Rogers.com uses cable within their sending mail server ]


there's stuff like ipt.aol.com for AOL dialups ...

Anyway don't reinvent the wheel like this. Look for and use

1. wirehub dynablock
2. pdl (www.pan-am.ca/pdl/)

         srs