On Fri, May 9, 2008 at 8:24 AM, Marcin Orlowski <[EMAIL PROTECTED]> wrote: > > Hi, > > I wonder if anyone tried to analyze his logs to find out how > effective gray listing is. I'd probably prefer to allow all > incoming mails (maybe with exceptions) and even disable > DENIED_IP_IN_CC_RDNS blockers as it yet causes too much > collateral damages I can accept, even 99% of the mails > DENIED_IP_IN_CC_RDNS deny is spam, then I got still 1% > remaining - and this ususally causes some problems, but > I yet like to deny mass-flood-senders. Something which > graylisting still shall fight with. So -> graylisting - > how effective it really is for you? >
When I used the graylisting feature, it was very effective for us. However, we got some "collateral" damage from mail servers who weren't behaving properly; specifically AOL. When an AOL user would send for the first time the server would return the "try again in a few minutes" message back to AOL's mail server, but instead of actually trying again, AOL would just pass that message back to the user. Then we would get a call from the user saying they couldn't send us email. This happened with another ISP (can't remember who now) as well. After a dozen calls it just wasn't worth having graylisting enabled. But that's just my experience. -- Have a nice day ... unless you've made other plans. _______________________________________________ spamdyke-users mailing list [email protected] http://www.spamdyke.org/mailman/listinfo/spamdyke-users
