Craig Jackson wrote: >
> Not
> realizing that those networks were broken into subnetworks (ARIN doesn't
> give that information), using Exim acls, email from those entire
> networks, plus a long list of networks in the US and Canada, are made to
> wait too long - 600s. Almost all spam disconnects during that time.
As will RFC-compliant servers trying to send you ham.
You should take a look at RFC 2821 section 4.5.3.2.
