Milter-greylist

Hi,

In <20090927002947.M37022@...>
  "Re: [milter-greylist] milter-greylist 4.3.4 is available" on Sun, 27 Sep 2009 11:32:57 +1100,
  "Michael Mansour" <mic@...> wrote:

>> Where can I find details on the tarpit feature?
> 
> I just found it in the README, but I'm still not clear on how to use it ie.
> how it works.
> 
> Is it similar to the sendmail GREET_PAUSE feature? ie. produces a delay before
> the MTA greeting?

Yes. But it produces a delay on RCPT TO not before HELO/EHLO.

> I currently have my greet pause at 30 seconds, so if it's just another greet
> pause method, then if I was to use miler-greylist's tarpit with sendmail's
> greet pause, will that work on top of it (accumulate the delay time) or do
> something else?

No. milter-greylist's tarpit can't integrate with Sendmail's
great pause because milter-greylist can't know about
Sendmail's greet pause action.

Here is a sample SMTP session when you use both Sendmail's
greet pause (30s) and milter-greylist's tarpit (65s).

  client -> connect
  server (pause 30s by Sendmail)
  server -> 220 GREET MESSAGE...
  client -> EHLO
  server -> 250 ...
  client -> MAIL FROM
  server -> 250
  client -> RCPT TO
  server (pause 65s by milter-greylist)
  server -> 250
  client -> DATA
  ...

Thanks,
--
kou