On Thu, 25 Jan 2007, Meng Weng Wong wrote:
On Jan 25, 2007, at 9:42 PM, Scott Kitterman wrote:
Forwarder whitelisting is definitely needed.
If folks want a place to cooperatively whitelist forwarders, I'll have one
ready soon .... folks can start by building a list of IP addresses,
hostnames, etc, and then I will aggregate those lists and munge them
together into a big whitelist.
You mean like "trusted-forwarders.org" but larger?
The issue I see is that number of systems doing only forwarding
or similar like pobox is rather low. What we really have is
large number of ISP mail servers (and univerisities and some
corporate mail servers though last one is less common) that
normally just process incoming/outgoing email for the company
but on occasion would do inline forwarding using aliases file
(sometimes quite large pre-build from internal db).
So what you end up building is list of known mail servers in
general which can get quite large and somewhat difficult to
maintain and be accurate long-term.
--
William Leibzon
Elan Networks
william(_at_)elan(_dot_)net
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