Re: [Exim] Dealing with spam from outblaze.com

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Author: Suresh Ramasubramanian
Date:  
To: Odhiambo Washington, Paul
CC: exim-users
Subject: Re: [Exim] Dealing with spam from outblaze.com
On Wednesday, January 22, 2003 7:24 PM [GMT+0530=IST],
Paul <prw@???> wrote:

> On Wednesday, January 22, 2003, at 07:43 AM, Odhiambo Washington
> wrote:
>>
>> I am stumped how to deal with these outblaze stuff. I'm sure there
>> are others who have seen stuff like the one below who could share
>
> You're not getting spam from Outblaze, you're getting spam from
> spammers forging Outblaze addresses. The easiest way to combat that is
> to turn on sender callout verification ("require verify =
> sender/callout" in the check_rcpt ACL).


  rossiestreettddx@???
    SMTP error from remote mailer after RCPT
TO:<rossiestreettddx@???>:
    host popstar-com.mr.outblaze.com [205.158.62.33]:
    550 5.1.1 <rossiestreettddx@???>... User unknown


That's right - these are all spams forging random addresses on our
domains, and then we get nearly saturated with bounces hitting our MXs
:(

Have to find some way of trashing / bouncing all these bounces (sendmail
8.12.x) short of rejecting MAIL FROM:<> ...

Try spamassasin or something (or maybe open proxy dnsbls) rather than
sender verify callouts - I would rather not have further unnecessary
connections to our MXs at the moment, thankyouverymuch.

    srs