Hi,

On Thu, 10 Jun 2004 11:34:24 -0800 John Andersen <[EMAIL PROTECTED]> wrote:

> On Thursday 10 June 2004 05:23, Greg Kopp wrote:
> > IMHO, I would not use blackholes.us in a business environment. If it's
> > for your own use and you don't mind people you know getting rejected
> > mail, then fine.
> >
> > But if it is your intention to actually do business with people, and to
> > have them send you e-mail, I would stay away from it.
> 
> The suggestion was (and I quote):
>   You could use an RBL like china.blackholes.us in SpamAssassin
>     or your MTA (Exim)."
> 
> Presumably the china list does not contain comcast, and vise-versa.

Maybe. You'd have to sort out how blackholes.us determines what's meant
by 'chinese' or 'comcast' (e.g. are the Chinese IP addresses allocated
to CNNIC or are they physically in China? Does the comcast list include
only ARIN allocations to Comcast? Are there addresses allocated by CNNIC
to Comcast?) This can get very confusing fast. The point is, you need to
understand the listing policy before you use them.

> How, then, would sould someone running a Tax Accountancy in East
> Midlands Texax suffer from blocking all of China?  

Practically (and this is where people get offended) it might not. If
you're responsible for that mail system, and the users understand and
agree with that policy, it's nobody's business but your own what systems
you accept mail from, provided you accept mail for abuse, postmaster,
etc. per RFC2142 (see http://www.faqs.org/rfcs/rfc2142.html)

> I have most of Korea blocked.  I can't read a word of Korean. 

Conversely, I've received unsolicited but professionally useful (and
welcome) personal mail from an engineer in Poland based on a paper on
risk assessment I wrote a few years ago. I know about 12 words in
Polish, all of them related to food, courtesy of my grandmother (may she
rest in peace.) Life may surprise you.

As usual, your system, your rules. :)

-- Bob

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