Re: [Asrg] Fwd: Returned mail: see transcript for details

[wayne <wayne@midwestcs.com>]

In <200303311633.h2VGXiLt019739@calcite.rhyolite.com> Vernon Schryver <vjs@calcite.rhyolite.com> writes:

> > From: wayne <wayne@midwestcs.com>
> 
> > attention.  DNSBLs in particular publish their information, so you can
> > check that you are indeed listed, while you can't test content
> > filters.
> 
> Not so.  Body filters can also announce or keep quiet about their
> effects with bounces or SMTP status codes like any DNS blacklists.

Ah.  What I meant is that I can check to see if someone is in the
SPEWS DNSBL, but I can't see if a given email will be rejected as spam
by a given content filter.  This lets people scream "SPEWS IS BLOCKING
MY NEWSLETTER!!11!" and everyone can see that, indeed, the given IP
address is listed in SPEWS.  However, I have no way of knowing if
brightmail will filter the same "newsletter" as spam.


DNSBLs are much more transparent about what they are doing and I think
transparent enforcement of rules is A Good Thing.  An erronious
listing in SPEWS can be noticed and corrected, but an erronious
brightmail rule will be very hard to detect.



-wayne

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