On Fri, 04 Feb 2005 15:02:06 +0000, Paul Howarth <paul@xxxxxxxxxxxx> wrote: > David Hoffman wrote: > > That being said.... my intention, if I can find a viable solution, was > > to try using greylisting, followed by RBLs, and then possibly backed > > up with SpamAssassin or ClamAV. Basically take TMDA out of the picture > > altogether. > > > > The reason I was asking for information was not to start a C/R flame > > war. It was because some articles on greylisting talk about how > > non-compliant MTAs can break the greylisting system by NOT sending > > back legitimate messages after the delay, or by seeing the delay > > response as an error and reporting it back to the original sender. > > > > All I wanted to know is if anyone has seen issues like that and how to > > get around them. > > I think most of the issues you're likely to run into have already been > mentioned. If you keep an eye on your mail logs for a while after > implementing greylisting then you're likely to spot any problem. > > However, I think greylisting is only a short to medium term solution. As > soon as someone really big (e.g. AOL or hotmail) implements greylisting, > the spammers will evolve their software to handle it, and you'll be back > where you started. This isn't going to be a big problem for them, but > it's just not worth the effort for them at the moment, as relatively few > sites are using greylisting. > OK. These last two comments were basically what I was hoping for. This was not a thread for the pro/anti C/R issues. Thank you Scott and Paul.
