On Wed, 25 May 2005 16:13:45 -0700 [EMAIL PROTECTED] wrote: > Jeff wrote: > >On Tuesday, May 24, 2005, 6:56:08 AM, Ronan McGlue wrote: > >> I added a dummy mx record (lowest preference) as we all know its > >> generally the one th spammers target first, which is getting hit > >> with about 50% of our daily connections, of which i defer all of > >> them at a very low overhead. > >Some of the spammers will eventually notice that your bogus MXer > >is not responding and fall back to trying the other MXers. > Why would they notice? In my mind, the mailserver would accept the > connections and emails, only to silently defer them. And by defer, I > mean delete them without any rejection or reply.
I don't think you are getting the meaning of "defer" in this context, which is to return a 4xx temporary error code at SMTP time. This won't "delete" any e-mail; it tells the sending server to retry again later. The point is that not all spam engines (and not all real mail servers, unfortunately) will actually retry properly, or at all. Tim
