Outbound spam prevention & reaction

[A&M ImpacT [W. Kranenborg]]

I don't accept mail for unknown recipients. Spammers send mail from an
emailadres of one of our customers. 20% of the mail to scan for them are
bounces of spam with the customers email-adress.

Don't pay attention to my bad englisch.

Greets Wessel

-----Oorspronkelijk bericht-----
Van: mailscanner-bounces at lists.mailscanner.info
[mailto:mailscanner-bounces at lists.mailscanner.info] Namens
Martin.Hepworth
Verzonden: woensdag 12 december 2007 18:45
Aan: MailScanner discussion
Onderwerp: RE: Outbound spam prevention & reaction


Don't accept email for unknown recipients (see the wiki for howto for
you're MTA), have a look at Tim Jacksons SA rules for bad virus bounces
(don't forget to take out the MailScanner rules!).

--
Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of A&M ImpacT [W.
Kranenborg]
> Sent: 12 December 2007 17:35
> To: MailScanner discussion
> Subject: RE: Outbound spam prevention & reaction
>
> That's my opinion too. About 20% of the mail of one day are bounces of
> spam. That's very annoying because we can't do anything about is and
it
> is waste of CPU time because it has to be scanned through x server in
> stead of just putting it to /dev/null after seeing it is spam.
>
> Greets Wessel Kranenborg
>
> -----Oorspronkelijk bericht-----
> Van: mailscanner-bounces at lists.mailscanner.info
> [mailto:mailscanner-bounces at lists.mailscanner.info] Namens J Bacher
> Verzonden: woensdag 12 december 2007 17:48
> Aan: MailScanner discussion
> Onderwerp: Re: Outbound spam prevention & reaction
>
> John Wilcock wrote:
>
> >> When forged spam email comes through, your server will be spamming
> >> someone else (that didn't originate the email).   If you're worried
> >> about being blacklisted, this should be on your list of "never do".
> >
> > ... except if you use a ruleset to only bounce spam for internal IP
> > addresses.
>
> I still recommend to never send a bounce on possible spam.
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