Hi !!
>>> I would like to increase a spam defense of our server by checking if a
>>> sender really represents an MX server of his/her organization. So if a
>>> certain PC is trying to send me an e-mail from user@??? then we
>>> will check if this person's IP address is within MX servers of
>>> domain.com, otherwise we'll refuse to accept the mail.
>> This is misguided. There's no useful correlation between outbound mail
>> relays and inbound MXs for a large proportion of the internet. Don't
>> do it.
>>
> OK, I see I was wrong. I just wanted to implement it because some
> prominent unix person had suggested this way of struggling with spammers.
you just could use this check to score messages when no spf
http://www.ols.es/exim/acl/ismx.acl
--
Best regards ...
I am Homer of Borg. Prepare to be assim... mmmm, donuts.
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David Saez Padros http://www.ols.es
On-Line Services 2000 S.L. e-mail david@???
Pintor Vayreda 1 telf +34 902 50 29 75
08184 Palau-Solita i Plegamans movil +34 670 35 27 53
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