Thanks to all for feedback on this.>> What is the downside???Any spam that may be relayed by the blacklisted server will make it through along with the legitimate mail that you want to receive.More importantly you make yourself an open relay to that server, and open youself up to be included along with them in the blacklists should it be discovered and utilized.
I went ahead and whiteholed the IP because the server IS a trusted source to me. It turns out that the DNS setup the ISP had (they are in the middle of a network reconfig) made Spamcop tag them as the source of spam. One of the Spamcop deputies has talked to the ISP to explain the logic used and how they can correct for it.
In any case this has had 3 good outcomes:
1) I learned more about SIMS
2) An innocent ISP has been delisted by Spamcop
3) My trusted host can send me mail
Since the server is not an open relay, there is little danger of me becoming one.
--
Neil
Neil Herber, RGD
Corporate info at http://www.eton.ca/
Eton Systems, 15 Pinepoint Drive, Nepean, ON, Canada K2H 6B1
Tel: (613) 829-4668
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