Heron wrote: > Hi, > > I have pointed out that some SMTP servers in the world reject incoming > e-mails for the first time with a "temporary error" message. If the message > comes second time it is accepted. > This mechanism is used to reject many spams, since many spam sending > computers do not try to send the message again after receiving "temporary > error" message from the remote SMTP server. > > My question is - how to implement such mechanism in Exim 4.x ? > >
Hi Robert, The keyword for this technique is "greylisting" / "graylisting". Take a look at http://www.greylisting.org/ Peter -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
