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 maintainer has been known to arbitrarily list every single IP address belonging to some major ISPs because of past abuses.

This is not an entirely bad practice. However, personaly experience has shown me that small businesses and even some larger businesses are not going to switch ISPs because they can't send YOU mail or because thier IP address is listed in blackholes.us because 100 years ago a few of those IPs were open relays.

The maintainer has also been rumored to block major ISPs simply because he doesn't like them.

Greg

Jeff Chan wrote:

On Thursday, June 10, 2004, 5:38:25 AM, Hirotaka Fox wrote:

/Also, apparently 70 percent of spam is sent from China by American spam
outfits who in turn have hosting arrangements with Chinese ISPs."/


Does anyone have a SpamAssassin related way to block all of China? I read things like this on SpamHaus and just want to block all of China from sending my company mail. We don't have any business dealings in China.


You could use an RBL like china.blackholes.us in SpamAssassin
or your MTA (Exim).

  http://www.blackholes.us/

If you truly want to drop them on the floor and never see them,
doing it in the MTA is far more efficient than doing it in SA.
However doing it in SA lets you score it rather than instantly
discarding which the MTA does.

Jeff C.

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