On Thu, Feb 28, 2008 at 11:16:37AM +0100, 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 ?
>
There are several forms of greylisting available. You can search
google for it. I am using exigrey:
http://www.schlittermann.de/doc/grey.shtml which is working well for
me.
Regards
Johann
--
Johann Spies Telefoon: 021-808 4036
Informasietegnologie, Universiteit van Stellenbosch
"Seek ye the LORD while he may be found, call ye upon
him while he is near: Let the wicked forsake his way,
and the unrighteous man his thoughts: and let him
return unto the LORD, and he will have mercy upon him;
and to our God, for he will abundantly pardon."
Isaiah 55:6,7
