Markus Stumpf <maex-lists-spam-ietf-asrg(_at_)Space(_dot_)Net> wrote:
On Tue, Apr 12, 2005 at 08:58:10PM -0400, Seth Breidbart wrote:
Every ISP knows which of its IP addresses hold machines that ought to
be allowed to send email directly outside its network.
I doubt that.
If we give e.g. a /28 to a (business) customer we don't know which
IP the mailserver will be on (if any). I don't think we are
different with this regard to the majority of all other ISPs.
If you're an ISP giving a subnet to a business (or a smaller ISP),
then as far as you're concerned they're welcome to put their
mailswerver on any of their IP addresses, so you don't have to block.
It's their problem.
Seth
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