Re: [exim] Spam engine note

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Autor: Philip Hazel
Data:  
Para: John W. Baxter
CC: Exim User's Mailing List
Assunto: Re: [exim] Spam engine note
On Fri, 17 Dec 2004, John W. Baxter wrote:

> This actually makes sense, I guess, in that it saves the spam engine the
> need to make numerous DNS queries, which might make discovery more likely.
> But it also means you can "dodge" some of the spam engines by playing games
> with changing your MX IP addresses now and then, provided customers don't
> connect to the MX machine(s).


In April 2003 we changed the MX records for the hosts I use for email so
that incoming mail was directed via our central servers (that do spam
checking). We still see a lot of direct connections (that we reject, of
course). It is not yet 10 a.m., and there have already been over 1000
today.

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book:    http://www.uit.co.uk/exim-book