Andy Schmidt wrote:That's actually what I've been seeing, though not in very high numbers presently. The only reason why we aren't seeing more of this is because most spam is still getting delivered and they have yet felt compelled to improve on their methods, however it is starting.Also, the "zombie" will only benefit from SPF, if they take the time and are able to figure out which domain's SPF TXT record happens to cover that particular zombie IP. Just using any old domain name with an IP will not get credit, because SPF will not match. Another issue is that when spammers manage to get AOL's servers listed in tier 1 RBL's, they weaken the entire system. I suspect that they know that relaying through an ISP's mail server can get them blacklisted, and therefore the spam would have two purposes. Right now 3 of AOL's servers on that same block are still blacklisted in SpamCop, and every one that is listed have been "witnessed sending spam less than 10 times." SpamCop has a very serious and obvious problem, and I think it might be the result of a bug or something because clearly this wasn't always the case. Imperfect as they may be, SpamCop could fix this problem and greatly improve on their present reliability. I'm not trying to knock SPF in this discussion, I just don't see it as a real fix, especially for something this obvious. You don't blacklist an AOL server after receiving less than 10 pieces of spam. Matt -- ===================================================== MailPure custom filters for Declude JunkMail Pro. http://www.mailpure.com/software/ ===================================================== |
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