Comments on: Greylisting sucks http://mjturner.net/blog/archives/2007/05/08/greylisting-sucks/ Michael-John Turner: Musings from a random UNIX geek Fri, 12 Jun 2009 22:28:43 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Michael-John Turner http://mjturner.net/blog/archives/2007/05/08/greylisting-sucks/comment-page-1/#comment-31674 Michael-John Turner Tue, 08 May 2007 10:54:20 +0000 http://weblogs.turner.org.za/mj/archives/2007/05/08/greylisting-sucks/#comment-31674 You're 100% correct - greylisting does have some nasty side effects, delays being one of them. I also agree that it only works "for now" and doesn't prevent spam from proper MTAs, but if it's going to prevent my MTA even seeing the spam, I'll keep promoting it while it continues to remain effective. I do use spamassassin, but find that a combination of greylisting, certain (conservative) RBLs and rejecting mail from non-RFC-compliant MTAs stops the majority of the spam I receive even before my MTA accepts it. You’re 100% correct – greylisting does have some nasty side effects, delays being one of them. I also agree that it only works “for now” and doesn’t prevent spam from proper MTAs, but if it’s going to prevent my MTA even seeing the spam, I’ll keep promoting it while it continues to remain effective.

I do use spamassassin, but find that a combination of greylisting, certain (conservative) RBLs and rejecting mail from non-RFC-compliant MTAs stops the majority of the spam I receive even before my MTA accepts it.

]]> By: Knofte http://mjturner.net/blog/archives/2007/05/08/greylisting-sucks/comment-page-1/#comment-31667 Knofte Tue, 08 May 2007 06:49:58 +0000 http://weblogs.turner.org.za/mj/archives/2007/05/08/greylisting-sucks/#comment-31667 Well, lists are supposed to be fast. Both reading/answering. If you start to greylist new users, it would remove the possibility to be fast, hence the whole idea of lists. (imho ofcourse). And greylisting is only working until more mailbots etc gets the picture and actually, resends the mail. Hence it's not a working solution. I'd rather take the 1second spamassassin-tour and get the job done anyway, since it's more useful than making users wait for 15-60mins for an adequate mail. Well, lists are supposed to be fast. Both reading/answering. If you start to greylist new users, it would remove the possibility to be fast, hence the whole idea of lists. (imho ofcourse).

And greylisting is only working until more mailbots etc gets the picture and actually, resends the mail.
Hence it’s not a working solution. I’d rather take the 1second spamassassin-tour and get the job done anyway, since it’s more useful than making users wait for 15-60mins for an adequate mail.

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