On Fri, 7 Jan 2005 12:03:17 -0500 (EST) Seth Breidbart
<sethb(_at_)panix(_dot_)com> wrote:
"Michael Kaplan" <mkaplansolution(_at_)lycos(_dot_)com> wrote:
I was unclear. What I meant was that it would be a simple matter
for and email provider to recognize a bounce sent via my system.
The email provider could then check to see if the recipient had
previously sent out an email to the supposed source of the bounce.
How could panix check to see if I've sent email, using my
sethb(_at_)panix(_dot_)com address, via some other MTA (not in Panix's
network)?
I certainly can do that (though SPF would fail).
i happen to agree with seth, and don't think there's a good way of
handling this, but supposing you could, there's still another one that
comes next.
for a sufficiently large ISP (think AOL, or a cable modem business),
keeping track of the tuples of <sender, recipient> for any length of time
will require a _substantial_ database infrastructure.
i was going to do some back-of-envelope computations on sizing, but
this is your proposal, mitch, so why don't you do them and share the
results with us.
richard
--
Richard Welty
rwelty(_at_)averillpark(_dot_)net
Averill Park Networking 518-573-7592
Java, PHP, PostgreSQL, Unix, Linux, IP Network Engineering, Security
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