[Mimedefang] Recent burst of greylist activity

[WBrown at e1b.org]

mimedefang-bounces at lists.roaringpenguin.com wrote on 12/15/2003 01:52:14 
AM:

> Sounds like a new spam virus is out.
> Sobig+h or similar.
> The question is heuristically how can you defend against this?
> Greylisting should definitally make a difference in the amount of spam 
you
> get, assuming a signifigantly long enough reject period.(In this
> instance.)

What *IS* a long enough reject period? Presently, I set it low (4 min) to 
allow a mail server set as low as 5 minute retry to get through on the 
second attempt.