[Mimedefang] Can MD/SA combo detect no reverse ip?

[Dirk Mueller]

On Don, 12 Jun 2003, David F. Skoll wrote:

> because in my experience, quite a bit of legitimate mail comes from
> servers without a reverse DNS entry.  I have a custom rule in my CanIt
> setup that adds 1.2 points in that case, and it seems to work fairly well.

little thought: it makes sense to test such relays without reverse dns for 
an open port 25. if there is no open port 25, those ips are almost always 
open proxies (which usually do nothing else than injecting spam). 


-- 
Dirk