Re: Block bounced messages resulting from spam or mydoom?

man, 09.02.2004 kl. 15.58 skrev Jimmy Mensinger:

> Hi, I've searched this list long and hard and can't find a suggestion for
> how to block any incoming bounced messages. It seems to me that our users
> are getting lots of undeliverable mail errors bounced back to them from
> email they didn't originally send. Most of them are running macs so I know
> they can't be victims or hosts of any viruses. As a system policy it is
> fine by me to block all returned messages for the meantime. But how to do
> this?

You can't, really. Blocking <> (null) senders will get you into peoples'
bad books and refusing bounces only makes the problem as an Internet
point of view a whole lot worse.

One of the mailadmins from one of the largest universities here in the
Netherlands (TU Delft) told me recently that Postfix is filtering out
Joe Jobs and consigning them to /dev/null at the rate of 3,000+ per
minute (he'd made his own filter script). He described a 'tail -f' on
the log in graphic terms.

--Tonni

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mail: billy - at - billy.demon.nl
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