Re: blueyonder decide who can email you

On Sun, 13 Nov 2005 16:02:03 UTC, "Alan J. Flavell"
<flavell@xxxxxxxxxxxx> wrote:

> There are lots of ways by which spammers can sneak spam through nodes
> which haven't yet been blacklisted, so it's certainly appropriate to
> apply further tests to mail offers which got past the first hurdle.
>
> It can make sense to look up the (purported) envelope sender domain.
> If it resolves to an IP that's in Spamhaus (or other appropriate
> blocking lists), then that's another good reason to reject the mail
> offer. (Which of course is why a lot of spam is faking harmless-
> looking addresses of innocent third parties as its envelope sender..)

I get rid of a lot more by checking for a validly formatted HELO...!

> "Their server - their rules", I'd say, and it *is* going to take this
> kind of action on a much broader front to convince pink-contract ISPs
> to reform themselves. That rates to benefit us all, in the long run,
> despite the short-term pain for those innocents who signed-up to
> providers of ill repute.

I completely agree.

> Don't take this personally but, in general terms, a poorly managed MTA
> is a liability, not just to its operator but to everyone else, and is
> sure to get itself blacklisted sooner or later, and cause other kinds
> of problem for the network access provider which it uses. (Our own
> network provider, JANET, carries out intensive 'hostile' attacks on
> every mail server on their network

I know...we have JANet at work too...! I'm extremely careful with my
mail server, but given that I teach this stuff... I do agree that not
just 'anybody' can run their own server successfully. In the long run,
it's as you say...those who allow spam to be sent need to clean up their
act.

--
[ 7'ism - a condition by which the sufferer experiences an inability
to give concise answers, express reasoned argument or opinion.
Usually accompanied by silly noises and gestures - incurable, early
euthanasia recommended. ]
.

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