Stuart Gall wrote:
>>> >> Please report them to http://www.rfc-ignorant.org > > Excellent RBL. First I heard of them. > ophosting are already listed a little while ago, did you do that? > Yes I did because I know some people use it to white list and I thought you would warn them. >> > I can remember about 8-10 years ago most spam was empty envelope from, > but mostly now they use random stolen email addresses. So this is a > really arcane idea. > I get about 10 DSN's per day on my sacrificial email account. > You can filter out nearly all bad dsn by using an envelope signature. Tony Finch did a paper on this I think, but you can find some more info on how to implement this on exim here: http://www.slett.net/spam-filtering-for-mx/collateral.html#signedsender
smime.p7s
Description: S/MIME Cryptographic Signature
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