Re: [exim] Lookups for blacklisted links within messages

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Lähettäjä: Marc Perkel
Päiväys:  
Vastaanottaja: Martin A. Brooks
Kopio: exim-users @ exim. org
Aihe: Re: [exim] Lookups for blacklisted links within messages


Martin A. Brooks wrote:
> Marc Perkel wrote:
>> Has anyone done this? What I would like to do is parse out all the
>> links within a message and do a DNS lookup on every domain within the
>> message.
>
> If it were possible, http://how.would.you.com/ deal with
> http://people.deliberately.co.uk/ seeding emails with
> http://non-existant.domains.com/ and thus DoSing your server while
> it's wating for http://dns.timeouts.cx/ ?
>

I'm not going to do lookups to the domains themselves. It will be
lookups in my own lists.

example.com.uribl.junkemailfilter.com