Hi John,
thanks for your response, indeed putting every server\product to be my age
server is reasonable thing to ask, but all cach in SPAM - you never can
compare tomatoes to tomatoes , but only doing so in "real time" :).
It's possible that exim only cannot provide me with needed functionality -
make each server think he is an age server, and I'll need use additional
programs, for example iptables …
Any ideas are welcome!
Tal
John Robinson-2 wrote:
>
> On 06/01/2008 14:20, tall27 wrote:
>> Hello,
>> I try to use Exim as a hub SMTP server, that should forward all incoming
>> e-mails (for a list of predefined domains) to a number of back end
>> servers.
>> The back end servers runs different Anti Spam products - and my goal is
>> to
>> check those different products. For this I would like that Exim send
>> messages as much as it's possible with the same format as it was received
>> by
>> Exim ( without add any new lines and perform changes to the e-mail) - in
>> other words - internal servers should "think" that they are receive
>> e-mail
>> from the Internet.
>>
>> What could be the most effective config to archive my goal?
>
> It's going to be tricky because many of the valuable things you can do
> to test for spamminess you can only usefully do if you're the edge
> server (where your exim is in this case), e.g. reverse DNS lookups,
> delays/tarpitting, checking proper SMTP compliance, etc.
>
> On the other hand if you're just comparing content scanners, exim
> doesn't change message contents, and would usually only add a received:
> header, which you could turn off (by unsetting received_header_text) but
> even then a good content scanner will notice the missing header from the
> intermediate server (your exim) and score against it.
>
> Overall I think you need to bite the bullet and put your test
> configurations right on the internet, not behind exim. And set up an
> exim with an anti-spam configuration: you'll probably find a well-tuned
> exim+clamav+spamassassin beats all the other anti-spam offerings :-)
>
> Cheers,
>
> John.
>
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