Author: Marc Perkel Date: To: Artem S. Tashkinov CC: Exim, Users Subject: Re: [exim] Ultimate spam defense - check for the sender MX record
Artem S. Tashkinov wrote: > Peter Bowyer wrote:
>
>> On 27/12/06, Artem S. Tashkinov <dummy@???> wrote:
>>
>>
>>> 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.
>>
>> Peter
>>
>>
>
> 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.
>
> Artem
>
Hey - keep thinking and keep trying. We're always looking for good ideas.
