spamd greylisting 2

[Josh Grosse]

On Fri, Dec 15, 2006 at 06:14:19PM +0100, Lou Hevly wrote:
> Greetings:
> 
> My apologies if I'm missing something alarmingly obvious.
> 
> The spamd docs say:
> 

<snip>

> ...Such
> connections will *not* be stuttered at... (Emphasis mine)

<snip>

> ...It's up and running and logs connections in /var/log/spamd.  But it 
> stutters.
> 
> Why?  What am I missing?

The rest of that sentence in the man page.

The -S option sets an *initial* stutter for the first character.  Why?  
Because real MTAs don't care, but spammers want to push as much through as 
quickly as possible, and lots of spambot software recognizes the delay as
a tarpit and will disconnect to go bother someone else.  

  -J-