[Mimedefang] earlytalker during connect

[Sean Ware]

Les Mikesell (les at futuresource.com) @ 2006.01.07 12:47:41 -0600:
>                              I'm not sure if this is possible
> or desirable with sendmail as the front end but I'd like
> to know if it is always spam senders that do this and the
> people on this list probably have as much experience with
> broken-but-legitimate mailer behavior as anyone...

Certainly possible. As for desireable, that's a more subjective
decision based on need and email traffic:

Requires Sendmail 8.13.0+.  An example block from my sendmail.mc: 

dnl # Edit /etc/mail/access to something like this:
dnl #
dnl # GreetPause:host.domain.com      5000
dnl # GreetPause:domain.com           0
dnl # GreetPause:127.0.0.1            0
dnl # GreetPause:192.168.120          5000
dnl #
dnl # the first and last lines will force a greet pause of 5 seconds
dnl # (5000 milliseconds); the second and third lines tell sendmail not to
dnl # wait at all. All other systems will be required to wait 2
dnl # seconds (2000 milliseconds, defined in the feature below.
FEATURE(`greet_pause', `2000')dnl


-- 
Sean Ware                          Midway Amusement Games, LLC
Senior Network Engineer                  2727 W. Roscoe Street
Information Technology Department       Chicago, IL 60618-5909
sware at midwaygames.com                           (773) 961-2000